Oil-water separator suppliers for car parks, fueling stations, industrial yards, and transport hubs.

    Find a Stormwater Oil-Water Separator Provider

    Matched providers: 21

    Top countries: United Kingdom, Netherlands

    Popular technologies: Flat Sheet UF Membranes, Hollow Fiber RO

    Oil-Water Separators for Stormwater: Class I, Class II, and Coalescing Plate Technology

    Oil-water separators (OWS) for stormwater treatment remove petroleum hydrocarbons, free oils, and light non-aqueous phase liquids (LNAPLs) from surface runoff before discharge to sewer or watercourse. Regulatory driver: UK: Environmental Permitting Regulations 2016 require Environmental Permit for contaminated surface water discharge; EA Pollution Prevention Guidelines (PPG) series (especially PPG2 Above Ground Oil Storage Tanks, PPG7 Refuelling, PPG22 Incident Response for Land Drainage) mandate OWS for high-risk land uses (petrol stations, vehicle maintenance, car parks, industrial sites). Standard: BS EN 858-1:2002 (Separator systems for light liquids, Part 1: Principles of product design, testing, marking and quality control) and BS EN 858-2:2003 (Part 2: Selection of nominal size, installation, operation and maintenance) define Class I (effluent less than 5 mg/L hydrocarbon) and Class II (effluent less than 100 mg/L hydrocarbon) separator performance, plus sediment trap and bypass provisions. US: EPA Stormwater Best Management Practice Design Guide; API Separator standard (API 421) defines gravity separation for oil densities less than 0.95 g/cm3. CIRIA Report C697 (Control of water pollution from construction sites) and CIRIA C532 (Control of pollution from highway drainage discharges) specify OWS for construction and highway applications.

    Separator operating principles and design: Class I (bypass) separator: single or multi-compartment gravity separator with fixed orifice bypass weir; oil (density approximately 0.7 to 0.9 g/cm3) rises to surface by Stokes' Law and is retained in an oil storage compartment; sediment settles to base of silt trap; in high-flow conditions (greater than 10 times design flow) the bypass weir diverts untreated flow directly to outlet. Nominal size (NS) selection per BS EN 858-2: NS is the design flow rate in L/s; each separator has an NS determined by the maximum stormwater runoff rate from the contributing catchment at the 1 in 1 year storm event. Class I separator with coalescing plate pack: packed inclined parallel plates (45 to 60 degrees, spacing 25 to 40 mm) provide increased effective settling area (enlarged surface per API 421 enhanced gravity formula); achieves less than 5 mg/L TPH effluent under steady-state conditions. Class II separator: gravity only (no plate pack); less than 100 mg/L TPH effluent; lower cost, simpler; used for lower-risk catchments (car parks without fuel facilities).

    Installation, maintenance, and performance monitoring: BS EN 858-2 specifies installation requirements: separator located on stable level ground with vehicle access for tanker emptying; access chambers at inlet and outlet for sampling; venting to prevent vapour buildup; frost protection for regions with sustained sub-zero temperatures (insulation or heating trace). Maintenance schedule: weekly: visual check of oil level in oil storage chamber; monthly: check sediment trap depth (desludge when greater than 50 percent full); 6-monthly: sample and test effluent quality (TPH less than 5 or 100 mg/L per BS EN 858 class); annually: full inspection of coalescing plate pack (clean if fouled), check structural integrity, update maintenance record. Oil disposal: collected oil (plus water phase, LNAPL mixture) removed by licensed waste contractor; classified as hazardous waste (EWC 13 07 03 - oily mixtures); manifest required (Hazardous Waste Regulations 2005). Full bypass events: during extreme rainfall, untreated bypass flow may reach the watercourse; Environmental Permit may require spill contingency plans for bypass events. For very high-risk sites (fuel tanker loading, bulk fuel storage), interceptors must be designed for credible spill scenarios (full tank truck discharge), not just routine stormwater.

    Frequently Asked Questions

    What is the difference between Class 1 and Class 2 oil separators?

    BS EN 858 classifies oil-water separators by their effluent quality performance: Class I separators: achieve effluent less than or equal to 5 mg/L total hydrocarbons (as n-alkanes C10 to C40, measured by IR spectrophotometry); required for sensitive receiving waters, water protection zones, and high-risk installations (petrol stations with forecourt runoff, fuel storage areas, vehicle washing); typically incorporate coalescing plate packs to enhance gravity separation; more expensive and larger than Class II. Class II separators: achieve effluent less than or equal to 100 mg/L total hydrocarbons; gravity-only separation without plate packs; suitable for general car parks (over 200 spaces typically required per PPG2), vehicle access areas, road drainage where TPH risk is lower; more compact and lower cost. Both classes include: bypass provision for flows exceeding nominal size (NS) rated flow; silt trap (sediment interceptor) upstream; automatic closure device (hydrostatic float valve) that closes the oil storage chamber outlet when oil storage is full, preventing oil carryover. Selection: BS EN 858-2 and PPG guidance specify which class is required based on land use type, sensitivity of receiving water, and proximity to groundwater source protection zones. Class I is required near SPZ1 and SPZ2 groundwater protection zones; Class II may suffice for Class 3 and lower-risk locations.

    Do all car parks need oil-water separators?

    Not all car parks legally require oil-water separators, but the threshold and assessment depends on risk, receiving water sensitivity, and local regulatory requirements. UK Environment Agency guidance (PPG2, PPG7, Pollution Prevention guidance): OWS required for: petrol station forecourts (Class I separator mandatory); vehicle washing facilities (all types); car parks and hard standings over 800 m2 or greater than 50 car parking spaces where surface water could reach a watercourse, soakaway, or coastal water; lorry parks, coach parks, and vehicle maintenance areas. Not required by default: small car parks (less than 800 m2 / less than 50 spaces) draining to combined sewer (though check Environmental Permit); sealed roof-draining car parks where surface is not exposed to vehicle traffic. CIRIA C532 (Highway Drainage): OWS required for certain highway drainage categories. Planning conditions: local authorities increasingly impose OWS requirements on new car park planning consents regardless of size if within a sensitive catchment. Best practice: sustainable drainage systems (SuDS) - permeable paving, bioretention - provide hydrocarbon removal through adsorption and biodegradation and may eliminate need for separate OWS; a SuDS treatment train (permeable paving + bioretention) can achieve Class I equivalent hydrocarbon removal for car parks.

    How often should an oil-water separator be emptied?

    Oil-water separator maintenance and emptying frequency per BS EN 858-2 and EA PPG guidance: Oil storage chamber: inspect monthly by checking oil thickness (dipstick or sight glass); arrange emptying when oil layer exceeds 50 mm depth or approaches manufacturer-specified maximum storage capacity (typically 1.5 to 3.0 times NS in litres, e.g. NS15 Class I separator holds approximately 450 L maximum oil); for petrol stations with high spill risk: monthly inspection mandatory. Silt trap: inspect every 6 months; desludge when sediment depth exceeds 50 percent of silt trap volume (typically 100 to 300 mm in standard precast OWS); high-sediment sites (construction area drainage) may require monthly emptying. Annual service: full inspection by qualified contractor; clean coalescing plates (jet wash with low-pressure hot water if fouled with biofilm or wax); check automatic closure device (float valve) operation; sample outlet water and measure TPH (should be less than 5 mg/L for Class I; less than 100 mg/L for Class II). Maintenance record: keep records for 3 years minimum (good practice); required as evidence of compliance with Environmental Permit condition. Oil waste disposal: EA Waste Carrier licence required for contractor; EWC code 13 07 03 (oily waste water mixtures); consignment note required if over 500 kg.

    What regulations govern stormwater discharge from industrial sites?

    UK stormwater discharge regulation for industrial sites: (1) Environmental Permitting Regulations 2016 (EPR): most surface water discharges from industrial sites are 'water discharge activities' requiring either a Standard Rules Environmental Permit (SR) or bespoke permit; standard permits available for some lower-risk scenarios (e.g. SR2010 No.9 for stormwater from certain industrial sites); TPH limits typically 5 to 15 mg/L, suspended solids 30 to 100 mg/L; (2) Water Resources Act 1991, Section 85 (now implemented through EPR): causing or knowingly permitting polluting matter to enter controlled waters is an offence; EA can prosecute without prior warning for serious pollution events (unlimited fine in Crown Court, 2-year imprisonment for individuals); (3) Trade Effluent Consent (Water Industry Act 1991): if stormwater is discharged to the public sewer, trade effluent consent from the sewerage undertaker is required if it contains industrial contaminants above domestic thresholds; (4) Groundwater Environmental Permit: required for indirect discharge to groundwater via infiltration (soakaways on industrial sites); (5) Contaminated land (Part IIA, EPA 1990): if industrial activity has caused contamination of underlying soil or groundwater, a site investigation and remediation plan under Part IIA may be triggered regardless of stormwater permit compliance.

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    HomeDirectoryReuse, Recovery & StormwaterStormwater Oil-Water Separator Companies

    Reuse, Recovery & Stormwater

    Stormwater Oil-Water Separator Companies

    Oil-water separator suppliers for car parks, fueling stations, industrial yards, and transport hubs.

    21 providers

    This page is a good fit if you need:

    • Flat Sheet UF Membranes or Hollow Fiber RO capabilities
    • Suppliers with manufacturing sector experience
    • Providers operating in United Kingdom or Netherlands
    Providers
    21
    Verified
    3
    Countries
    10

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    How to choose a stormwater oil-water separator provider

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    United Kingdom7
    Netherlands4
    United States3
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    agriculture4
    construction-real-estate4
    mining-quarrying4
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    Flat Sheet UF Membranes3
    Hollow Fiber RO3
    Hollow Fiber UF Modules3
    Osmotically Assisted RO (OARO)3
    Precipitation + Filtration Systems3

    Find a Stormwater Oil-Water Separator Provider

    Showing 1-20 of 21

    21 results from 21 matched providers

    BM

    Butler MS

    Ireland
    Nitrification systems for ammonia removal · Hydrodynamic vortex separators · Hydrobrake stormwater flow control
    Europe

    Butler Manufacturing Services is a family-owned company established in 1986 that manufactures packaged products for wastewater and stormwater treatment, exporting to over 50 countries. The company provides sewage treatment systems, pump stations, and surface water management solutions, supported by a free design service, operation and maintenance with repair and testing, and on-site CPD presentations. Headquartered in Longford, Ireland, it applies nitrification, vortex separation, and hydrobrake flow control across its product range.

    Free design service for sewage treatment and surface water management
    Operation and maintenance including repair and testing
    On-site CPD presentations
    +1 more
    Hainan Litree Water Purification Technology Industry Co., Ltd. logo

    Hainan Litree Water Purification Technology Industry Co., Ltd.

    Verified
    China200+ employees
    Tubular Ultrafiltration Units · Hollow Fiber UF Modules · Flat Sheet UF Membranes +17 more
    apac · china · europe +3 more

    Litree: Pioneering Ultrafiltration for a Water-Secure World Founded in 1992, Litree has dedicated 30+ years to redefining water purification through ultrafiltration (UF) membrane technology—our core expertise and passion立升(Litree). As a global high-tech enterprise rooted in independent innovation, we’ve evolved from a membrane R&D startup to one of the world’s leading water problem solvers, with over 146 core patents and state-of-the-art manufacturing hubs in Haikou and Suzhou, China立升(Litree). Our signature hollow fiber UF membranes are engineered to deliver unmatched performance: 0.01μm precision removes 99.99% of bacteria, viruses, and contaminants while preserving essential minerals—striking the perfect balance between purity and health立升(Litree). This technology powers our diverse solutions, from residential whole-house systems to large-scale municipal projects and industrial wastewater treatment, all designed for sustainability and cost-efficiency. What truly sets us apart is our commitment to making safe water accessible. We’ve completed projects serving 50,000+ residents with centralized purification systems that cut construction costs and footprint by 50% compared to traditional setups—proof that advanced technology can also be affordable. Today, our solutions reach 60+ countries, supporting 3,000+ industrial clients and millions of households worldwide. At Litree, water isn’t just our business—it’s our mission. We believe every drop matters, and we’ll keep pushing boundaries to create a future where clean, safe water is a universal right, not a privilege

    Ultrafiltration (UF) Systems
    Membrane Filtration Technologies
    pH Adjustment and Neutralization
    +64 more
    agriculture
    manufacturing
    Chardon Labs logo

    Chardon Labs

    United States
    Chemical-based treatment programs · Biocide chemical storage and dosing tanks · Automated chemical feed meters +2 more
    North America

    Chardon Labs is a commercial and industrial water treatment service provider headquartered at 7300 Tussing Road in Reynoldsburg, Ohio. Founded in 1965, the company delivers customized treatment programs for cooling towers, boilers, and closed-loop systems, addressing scale, corrosion, biological growth including Legionella, and mineral content. Services include water testing, chemical application, system cleaning and flushing, filtration, and Legionella testing and control. Chardon Labs is ISO 9001:2015 certified and offers ASSE 12080 Legionella certification, serving customers across roughly 13 states in the eastern and midwestern United States.

    Boiler water treatment
    Cooling tower water treatment
    Closed-loop water treatment
    +2 more
    E

    Ecofario

    Germany
    High-G-Separator · Hydrocyclone separation · High-gravity centrifugal separation +1 more
    Europe

    Ecofario, founded in 2013 and headquartered in Munich, Germany, develops filterless microplastic removal technology for municipal and industrial wastewater treatment plants. Its High-G-Separator uses a high-gravity hydrocyclone principle to remove up to 99.9 percent of microplastics, including adhering pollutants, without filter media, and also serves contaminant rejection, oil extraction and fiber-loss reduction. The company partnered with Valmet for automation and was named one of Germany's most sustainable startups in the Resources category.

    Microplastic separation systems
    Wastewater plant retrofits
    Hydrocyclone integration
    +2 more
    MW

    MITA Water Technologies

    Italy
    Oilpack lamella oil separators · Mitadaf dissolved air flotation · Pile cloth filtration +3 more
    Europe

    MITA Water Technologies, founded in 1971 in Siziano near Pavia, Italy, designs wastewater treatment equipment with deep expertise in cloth filtration and physical separation. Its Oilpack lamella-pack oil separators and Mitadaf dissolved air flotation units target oil and grease removal, while pile cloth filters, Filtrasand sand filters and Biorulli biological disc rotors handle tertiary filtration, suspended solids and BOD/COD reduction for reuse. Part of Axius Water, the firm offers pilot testing, start-up, revamping and remote monitoring.

    Equipment design and supply
    Pilot testing
    Start-up and training
    +2 more
    Ecosystems International logo

    Ecosystems International

    Verified
    Indonesia51-200 employees
    Flat Sheet Microfiltration Units · Hollow Fiber MF Systems · Ceramic Microfiltration Modules +80 more
    apac · china · europe +3 more

    PT Ecosystems International (PT ESI) was established at Jakarta on 21st November 2006. We are an industrial effluent treatment systems integrator specializing in electrocoagulation (EC), a unique waste water treatment profile. PT ESI has capabilities in designing complete waste water treatment solutions by combining various effluent treatment systems such as the electro-coagulation, biological, chemical processes and membrane filtration, offering its customers a wide and comprehensive range of solutions, tailored to suit their various needs – ranging from basic effluent treatment for discharge to effluent recycling for water reuse. The Company is experienced in handling the design, engineering, procurement, construction and operation of new Effluent Treatment Plants (“ETP”) and possesses expertise in retrofitting existing ETP to increase the flow rate and treatment capability without any major infrastructure increase PT ESI is also a premier waste water treatment service company specializing in handling waste water generated from Exploration (Drilling) and Produced Water. Customers in Indonesia include major Oil & Gas companies such as Pertamina, Exxon, Chevron, Petro-China and Medco. Operations in Indonesia are provided by both mobile and fixed units. At drill sites where waste-water recycling is required, PT ESI supplement these treatment units with skid mounted mobile Reverse Osmosis systems. The technologies and solutions employed by PT ESI are developed in-house and examples of these are its proprietary Trident™ Electro Contaminant Removal (“ECR”) system, the Stage Contaminant Removal (“SCR”) process and Mobile On-Site Waste-Water Treatment (“OWT”) units

    Reverse Osmosis (RO) Systems
    Ultrafiltration (UF) Systems
    Multi-media Filtration (MMF) Systems
    +63 more
    agriculture
    manufacturing
    C

    Cleanawater

    Australia
    Coalescing plate oil water separators · Vertical gravity separators (VGS) · Hydrocyclone separation +2 more
    Asia-Pacific

    Cleanawater is an Australian company established in 1996 that designs, manufactures, installs, and services wastewater treatment, wash water recycling, and odour management systems. The company is a leading supplier of oil water separators across the Australian market, removing suspended solids, free oils, and grease from wastewater at capacities from 1,000 to 50,000 litres per hour. Cleanawater serves industrial and commercial clients across Australia and Asia.

    Wastewater treatment system design and manufacture
    Oil water separator supply and installation
    pH control and chemical dosing systems
    +2 more
    Epic Cleantec logo

    Epic Cleantec

    United States
    OneWater onsite water reuse system · OneWater Rain rainwater and stormwater system · Wastewater heat recovery technology +2 more
    North America

    Epic Cleantec is a San Francisco, California based water technology company specializing in decentralized, onsite water treatment and reuse systems for buildings. The company designs, engineers, permits, and installs water recycling solutions that recover three outputs from a building's wastewater: recycled water for non-potable use, recovered heat energy, and soil amendments. Its flagship OneWater and OneWater Rain systems serve residential and commercial developments, corporate campuses, hotels, data centers, stadiums, and breweries, claiming up to 95 percent reductions in water demand and utility fees. Epic Cleantec also provides operations and maintenance support along with project financing options.

    Onsite water recycling and reuse system design and installation
    Wastewater heat recovery
    Soil amendment production from treated solids
    +2 more
    Brine Consulting logo

    Brine Consulting

    Verified
    Netherlands1-50 employees
    Mechanical Vapor Recompression (MVR) · Atmospheric Evaporator · Spray Evaporator +130 more
    apac · china · europe +3 more

    BRINE CONSULTING delivers senior-level strategy, technical design, and actionable insight across the full lifecycle of water-related challenges. We support clients with advisory and due diligence, advanced brine management and resource recovery, industrial and municipal water reuse, and MLD/ZLD systems. Our team also leads ESG and climate-resilience strategy, innovation scouting, and international development and PPP advisory. With deep specialization in desalination, brine valorization, circular economy models, and high-impact infrastructure, we help organizations turn water and waste streams into opportunities, providing clear thinking, rapid delivery, and solutions built for real-world results.

    Activated Carbon Filtration
    Reverse Osmosis (RO) Systems
    Ultrafiltration (UF) Systems
    +85 more
    manufacturing
    energy-production
    Devram International logo

    Devram International

    Verified
    India1-50 employees
    Granular Activated Carbon (GAC) Filters · Fixed Bed Activated Carbon Adsorbers · Powdered MOF Adsorbent Systems +19 more
    apac · mea

    DEVRAM INTERNATIONAL, headquartered in Surat, India, is a pioneering enterprise specializing in Snow and Rainwater Management with advanced contamination reduction abilities for storage and artificial groundwater recharge. Established as the commercial wing of Shree Someshwar Education Trust (SSET), DEVRAM INTERNATIONAL is driven by a mission to provide tech-enabled, nature-based solutions that address the world’s most pressing water and climate challenges. The company’s work integrates Integrated Water Resources Management (IWRM) principles and contributes across the source-to-sea water management cycle, ensuring holistic restoration of the global water cycle. Its innovative portfolio includes rainwater harvesting systems, stormwater management, aquifer recharge, artificial glaciers, desert trenches, rooftop water filtration, and green infrastructure models. These interventions directly reduce salinity in soils and aquifers, restore ecological balance, and enhance resilience to droughts, floods, and climate change. As the commercial promoter of the Global Rainwater Management Program (GRMP), DEVRAM INTERNATIONAL advances the vision of GRMP as a Global Common Minimum Program (GCMP) for nations and international bodies. GRMP demonstrates how rainwater and snowwater retention can restore entire natural cycles, while delivering unmatched benefits across the Sustainable Development Goals (SDGs). Alignment with the SDGs • SDG 2 (Zero Hunger): By reducing soil salinity, supporting organic farming, and ensuring water availability for agriculture, GRMP safeguards food security. • SDG 6 (Clean Water & Sanitation): DEVRAM’s recharge structures and contamination reduction technologies guarantee safe, sustainable drinking water for communities. • SDG 7 (Affordable & Clean Energy): By reducing dependency on energy-intensive desalination, GRMP lowers national energy bills and improves hydropower capacity. • SDG 9 (Industry, Innovation & Infrastructure): DEVRAM integrates nature-based water infrastructure with industrial operations, reducing OPEX and water footprints. • SDG 11 (Sustainable Cities & Communities): Through stormwater management and aquifer recharge, GRMP mitigates urban flooding and secures municipal supplies. • SDG 12 (Responsible Consumption & Production): Promotes a circular water economy, reusing wastewater, biogas from organic waste, and aligning with industrial CSR. • SDG 13 (Climate Action): By lowering GHG emissions and cooling local climates through water cycle restoration, GRMP strengthens resilience to global warming. • SDG 14 (Life Below Water): Free-flowing rivers, improved aquaculture, and reduced dam-related aquatic pollution support marine and freshwater ecosystems. • SDG 15 (Life on Land): DEVRAM’s interventions restore wetlands, mangroves, peatlands, and biodiversity-rich ecosystems, addressing land degradation. • SDG 17 (Partnerships for the Goals): The company actively collaborates with UN agencies, governments, World Bank programs, and private investors to scale GRMP globally. Founders and Leadership Dhaval Pandya, Co-Founder of DEVRAM INTERNATIONAL and CEO of SSET, is a globally recognized sustainability leader. He co-developed the Global Rainwater Management Program (GRMP), recognized by the United Nations Global Water Partnership (GWP) and the Government of India. As a Technical Committee Member (WRD03) of the Bureau of Indian Standards (BIS), he contributes to national water policy frameworks. His work is featured in UNCCD IWRM Action Hub and global forums like COP, Stockholm World Water Week, and World Bank SDG reviews. Manalika Pandya, Co-Founder, plays a critical role in embedding social, gender, and educational dimensions into GRMP. Her focus on women empowerment, local capacity building, and community-driven adoption ensures the program’s sustainability at the grassroots. Impact and Recognition DEVRAM INTERNATIONAL has piloted groundbreaking projects such as: Kawas Village (Gujarat, India): A GRMP model village achieving self-reliance in water, organic farming, and biogas, while resolving conflicts with industries. Delhi’s Water Paradox (Figshare Study): Shows how GRMP can solve megacity water crises without costly desalination or dams. GSECL Surat Project: Demonstrates reduced industrial water costs through GRMP recharge planning, aligning profitability with SDG and ESG goals. These projects show GRMP’s potential to reduce industrial and municipal water supply costs by up 60%, avoid massive investments in desalination and dams, and enable nations to achieve water sovereignty. Core Competencies • Rainwater & Snowwater Harvesting • Artificial Groundwater Recharge & Salinity Reduction • Stormwater Management & Urban Flood Control • Transboundary Water Cooperation • IWRM & Source-to-Sea Water Governance • AI-Enabled Hydrological Modelling & Policy Analytics • Environmental Services Restoration (Wetlands, Mangroves, Peatlands) • Circular Economy.

    Activated Carbon Filtration
    Granular Activated Carbon (GAC) Filters
    Multi-media Filtration (MMF) Systems
    +25 more
    manufacturing
    utilities
    Oil Skimmers, Inc. logo

    Oil Skimmers, Inc.

    United States
    Brill tube-type oil skimmer · Active Oil Removal · Floating weir skimmer +2 more
    North America

    Oil Skimmers, Inc., headquartered in Cleveland, Ohio and operating for over 50 years, manufactures oil removal equipment that separates oil, fat and grease from process water, wash water, coolant and wastewater. Its Brill tube-type skimmers, floating weir skimmers and oil water separators with Active Oil Removal recover up to 99 percent of free-floating oils across food processing, metal machining, petrochemical and marine sectors. Product lines include CoolSkim, Skim 1st Tank, OilyBelt and the ORTS oil removal and transfer system.

    Oil skimmer manufacturing
    Custom-engineered separators
    Factory repair and maintenance
    +2 more
    Bioclear earth logo

    Bioclear earth

    Netherlands1-50 employees
    Zero-valent Iron (ZVI) · Anaerobic Systems · Natural Zeolite Packed Columns +1 more
    europe

    Bioclear earth specializes in resolving complex environmental and soil issues. We provide sustainable solutions through research and the application of innovative environmental technology. Additionally, we support companies in the areas of knowledge development, process optimization, and sustainable business practices.

    agriculture
    manufacturing
    Biocompact logo

    Biocompact

    Netherlands1-50 employees
    Coagulation/Flocculation · Ion Exchange · pH Adjustment +1 more
    europe

    SAVE WATER, SAVE OUR PLANET! With climate change and a growing population, saving drinking water is more important than ever. 20% of our drinking water is used to flush the toilet, and therefore biocompact helps companies, governments and non-profit organisations to save drinking water in the sanitary room.

    hospitality-tourism
    construction-real-estate
    AE Yates Group logo

    AE Yates Group

    United Kingdom

    Established in 1870, AE Yates is a progressive civil engineering contractor with an enviable track record of successfully delivering technically demanding high quality works to the complete satisfaction of a wide variety of public and private customers. An Integrated Construction Company A E Yates has grown to be an integrated construction company with a turnover of £50m, employing over 170 managerial, professional, technical and operational staff. Our company headquarters, based in Bolton, are strategically located to serve and communicate with clients throughout the United Kingdom with immediate access to road, rail and air transport facilities. We also have an operating base in Sheffield. AE Yates Group The group companies add value for customers not just in their specialism. When working together they can offer an integrated service through resource sharing and joint management of activities. Operational interfaces are removed eliminating potential co-ordination, management and programming issues for customers. AE Yates Civil Engineering Ltd AE Yates Directional Drilling Combined Soil Stabilisation Side Grip Piling SPI Piling Tritech Ground Engineering AE Yates Haulage Equipment and Skills Investment in the development of highly skilled operational teams up to date equipment has reinforced and enhanced our capability in all areas of operations. We own and operate an extensive fleet of general civil engineering and specialist plant and equipment. Experienced and Dedicated We are a highly experienced and respected civil engineering contractor operating to an Integrated Management System which is fully accredited to IS 9001:2015, ISO14001:2015 and ISO45001:2018 by BSI. We are fully committed to meeting the required standards of quality, customer care, environmental awareness, safety, health, time and cost demanded by our clients. We are fully supportive of the UK industry’s drive towards Continuous Improvement, Best Value and Constructing Excellence.

    Renewables & Energy Management
    Contractors
    Steve Vick International Ltd logo

    Steve Vick International Ltd

    United Kingdom

    Steve Vick International (SVI) is dedicated to delivering cost-saving solutions for damaged, redundant or outdated underground pipework. Since its foundation in 1981, SVI has been at the forefront in developing products and techniques for the repair, renovation and decommissioning of pipes. Predominantly our work has been in the gas industry but increasingly we are undertaking projects in the water and nuclear sectors. We are the UK’s leading producer of Pipe Coil Trailers and offer a range of Pipe Handling equipment such as Handlers, Crackers and Cutters. Some of our latest innovations include the PE Pipe Cutter, the Pipe Feeder for Pre-Insulated coiled pipe, PE Live Head for Live Mains Insertion, the Perpetual Pipe Pusher, FBOS (Foambag Operation on Stubs) and SMARTester. WATER: For over 20 years water utilities and their contractors in the UK and overseas have used our pipe handling equipment to improve their efficiency and safety. Today our products include Pipe Handlers, Pipe Coil Trailers and Pipe Cutters as well as our patented DRAINBLOCK™ and RATBLOCK™ sealing systems. GAS: In the UK we are major suppliers to all the gas distribution networks. Many of the techniques we have pioneered have become the preferred methods of working in the industry and our resin foam sealant products and associated equipment are key to many of the cost-saving renovation processes used. NUCLEAR: SVI offer solutions to the problems associated with decommissioning and sealing disused pipework, ducts, sleeves and ventilation shafts. Our technology can also be designed for the mass filling of large and complex voids and is a lightweight alternative to cement grout. We have worked at Hinkley, Sellafield, Harwell, Chapelcross and Hunterston. CONTRACT SERVICES: A rapidly expanding part of our business is our Contract Service department who are well known for their work in the field of renewing and repairing underground gas pipes, for the UK Gas Distribution Networks. However, they are becoming increasingly involved in projects being undertaken by water utilities, electricity providers, rail networks, civil engineers, construction companies and local councils. This reflects the range of skills and expertise available to solve on-site problems associated with pipe repair, renovation, and diversion. Located strategically around the UK the highly skilled team can provide a fast response, emergency repairs and a rapid call out service which is offered 24 hours a day, 7 days a week. HIRE: We offer specialist plant and equipment for the Utilities Industries. Products available for hire include our Pipe Handlers, Perpetual Pipe Pusher, Pipe Coil Trailers, Rapid Rotary Cutters, Rapid Window Cutters, MACAW Pipe Crackers, CRACKERJACK and Mini Purge. All our hire equipment comes with onsite support from our highly experienced engineers and our products are fully maintained and serviced at our depots. All equipment is also available to purchase. SMARTester: SMARTester is the wireless pressure test system, that ensures absolute traceability and best practice. The system combines: SMARTester pressure sensor, an intuitive App and a Dashboard database of test evidence. Together the 3 components work to give you confidence that your tests are highly accurate, fully compliant and that evidence is traceable.

    Networks - Water Supply
    Asset Maintenance & Rehabilitation
    Carlow Concrete logo

    Carlow Concrete

    United Kingdom

    Carlow Concrete is a market leader in water retaining precast concrete structures in both the United Kingdom and Ireland. Production at our state of the art plant in the South East of Ireland is carried out using the most modern and innovative methods and equipment, for the quality production of our products ensuring the highest standards of quality and specification compliance are achieved every time. As part of the Burren Precast Concrete Group, the company has the resources and infrastructure to meet the high demands of our customers in relation to quality of service and product. Our organisation benefits from a team with combined expertise of over 100 years in the precast industry. The company has the technical expertise, the flexibility in production methods and the resources to Interpret, Design, Manufacture and Assemble to the highest standards to meet the requirements of its customers, bringing modern methods of construction through the benefits of off-site construction, building information modelling (BIM) and highly experienced installation teams. Our expansive range of products are devised specifically for both water and wastewater projects and are unrivaled in terms of design, quality and ease of installation. Our solutions offer international, national and customer specification compliances and meet all water companies’ asset standards throughout the UK & Ireland. Site installations typically achieve 25% to 50% reduction in programme with fewer people and plant requirements, meaning substantial savings to both preliminary and direct costs. Stormwater attenuation. Flood alleviation. Service reservoirs. Precast filter bed wall and tile system. Activated sludge plant. Final/primary settlement tanks. Retaining walls.

    Storage Tanks
    Contractors
    Siltbuster Group logo

    Siltbuster Group

    United Kingdom

    Established for over 20 years, the Siltbuster Limited provides rapidly deployable, “modular off the shelf” water treatment solutions to the construction, industrial and municipal markets, with a client base ranging from the world’s most recognisable multi-national corporations to small enterprises. Siltbuster provides a wide range of water and wastewater treatment equipment for the industrial and municipal markets, including: Packaged lamella dissolved air flotation (DAF) units. Lamella clarifiers. Packaged biological treatment systems. Oil/water separators. Pipe flocculators. Reaction tanks. Containerised dosing systems. In the UK, Siltbuster has pioneered the concept of offering this plant through our extensive hire fleet. Approximately 20 major contracts and circa 50 smaller projects are undertaken each year for a diverse range of clients, many of which are some of the UK’s best-known companies. In addition to the industrial/municipal sector, Siltbuster has undertaken a number of mine water treatment projects in many countries, for example, the UK, Ireland, Greece, France, USA, Canada, Australia and Slovakia. The Siltbuster team pride themselves in their ability to react rapidly and in compliance with the project constraints, delivering mobile or permanent solutions tailored to meet your individual needs.

    Treatment Process Technologies
    Asset Maintenance & Rehabilitation
    Salix River and Wetland Services logo

    Salix River and Wetland Services

    United Kingdom

    Salix River & Wetland Services are bioengineering technical specialists, involved in the supply, contract and design elements of river, wetland and coastal projects. Salix has extensive experience working within all river types across the UK, providing innovative vegetated, sustainable solutions for soil erosion and wetland creation. SUPPLY Our in-house product range specifically developed for erosion control and habitat creation includes Coir Rolls, Coir Pallets, Rock Rolls, Rock Mattresses, Rock Bags and the world’s highest performing range of Composite Turf Reinforcement Mats – VMax C350 & C500. We also provide hydraulically applied solutions such as TerrAffix. We have the largest native wildflower and wetland plant nursery in the UK. Salix are the only company to manufacture coir rolls and pallets within the UK, providing a massive reduction in carbon. Salix rock products allow natural sediment accretion and vegetation establishment, unlike harder solutions such as rock armour or gabions. CONTRACTING Salix’s contracting division undertake works for local authorities, public bodies, utility companies, main contractors & private clients, having been involved in a diverse range of projects across the UK. Salix has unrivalled specialist equipment for fluvial environment, including a Mackenzie ‘Muck’ Spider excavator. The Spider has four independent legs, with the ability to access logistically challenging of sites. Salix also has long reach excavators, floating pontoons, hydroseeders and truxor available for a diverse range of specialist fluvial and intertidal activities.

    River & Coastal Flood Protection
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    Mott MacDonald logo

    Mott MacDonald

    United Kingdom

    We are proud of being a world-class independent management, engineering and development consultancy. Being independent, wholly owned by our people, puts us in charge of our own journey and allows us to focus on what we believe is important for our clients, our colleagues and the communities we work and live in. We have more than 100 years’ experience in the water sector and are experts in every aspect of water development, with all the skills and commitment to deliver solutions that benefit every stakeholder.  We also established Mott MacDonald Bentley more than twenty years ago to deliver long-term programmes of work through a strategic focus, effective communication and flexibility in different models of working.  We are experts at building a trusted relationship with our clients. From investment planning to operational support, design to capacity building we work with private investors and listed companies, as well as national and local governments across the world in both developing and developed regions. As advisors, we think laterally and find the connections that others fail to make. We are pioneers with a thirst for innovation, who understand the challenges facing the water industry today, including biodiversity net gain, natural capital and ecosystem services, the practicalities of the journey to net zero, nature-based solutions and natural flood management and the need to consider everything from a fresh angle and turn obstacles into sustainable paths for both businesses and the lives they touch every day.

    Renewables & Energy Management
    Designers
    Hydro International logo

    Hydro International

    United Kingdom

    Hydro International, a CRH company,  provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management processes, increase operational performance and reduce environmental impact. Hydro International can help water companies meet their AMP and environmental obligations, including the reduction of sewer overflows and the Water Industry National Environment Programme (WINEP). Hydro International provides total solutions for Inlet Works, Combined Sewer Overflows (CSOs), Stormwater Management, Flood Warning and Prevention, and Water Resource management, from design to supply and installation through to ongoing preventative maintenance, servicing and emergency repair.  These solutions include: Hydrometric data collection, monitoring analysis and reporting for river level, reservoir, network and weather. Continuous water quality monitoring for compliance with Section 82 of the Environment Act. Water resource analysis and consultancy. Stormwater management solutions, including options for Sustainable Drainage Systems. (SuDS) and Smart Maintenance. CSO event duration monitoring. CSO and storm tank treatment and screening. Passive flow controls for flood prevention schemes, SuDS, CSOs and WwTWs. Inlet works screening and grit removal solutions. Sludge screening. Dropping sewage or water safely from height. Hire, repair and maintenance of inlet works screens and screenings handling equipment

    Networks - Sewerage
    Asset Maintenance & Rehabilitation
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    Oil-Water Separators for Stormwater: Class I, Class II, and Coalescing Plate Technology

    Oil-water separators (OWS) for stormwater treatment remove petroleum hydrocarbons, free oils, and light non-aqueous phase liquids (LNAPLs) from surface runoff before discharge to sewer or watercourse. Regulatory driver: UK: Environmental Permitting Regulations 2016 require Environmental Permit for contaminated surface water discharge; EA Pollution Prevention Guidelines (PPG) series (especially PPG2 Above Ground Oil Storage Tanks, PPG7 Refuelling, PPG22 Incident Response for Land Drainage) mandate OWS for high-risk land uses (petrol stations, vehicle maintenance, car parks, industrial sites). Standard: BS EN 858-1:2002 (Separator systems for light liquids, Part 1: Principles of product design, testing, marking and quality control) and BS EN 858-2:2003 (Part 2: Selection of nominal size, installation, operation and maintenance) define Class I (effluent less than 5 mg/L hydrocarbon) and Class II (effluent less than 100 mg/L hydrocarbon) separator performance, plus sediment trap and bypass provisions. US: EPA Stormwater Best Management Practice Design Guide; API Separator standard (API 421) defines gravity separation for oil densities less than 0.95 g/cm3. CIRIA Report C697 (Control of water pollution from construction sites) and CIRIA C532 (Control of pollution from highway drainage discharges) specify OWS for construction and highway applications.

    Separator operating principles and design: Class I (bypass) separator: single or multi-compartment gravity separator with fixed orifice bypass weir; oil (density approximately 0.7 to 0.9 g/cm3) rises to surface by Stokes' Law and is retained in an oil storage compartment; sediment settles to base of silt trap; in high-flow conditions (greater than 10 times design flow) the bypass weir diverts untreated flow directly to outlet. Nominal size (NS) selection per BS EN 858-2: NS is the design flow rate in L/s; each separator has an NS determined by the maximum stormwater runoff rate from the contributing catchment at the 1 in 1 year storm event. Class I separator with coalescing plate pack: packed inclined parallel plates (45 to 60 degrees, spacing 25 to 40 mm) provide increased effective settling area (enlarged surface per API 421 enhanced gravity formula); achieves less than 5 mg/L TPH effluent under steady-state conditions. Class II separator: gravity only (no plate pack); less than 100 mg/L TPH effluent; lower cost, simpler; used for lower-risk catchments (car parks without fuel facilities).

    Installation, maintenance, and performance monitoring: BS EN 858-2 specifies installation requirements: separator located on stable level ground with vehicle access for tanker emptying; access chambers at inlet and outlet for sampling; venting to prevent vapour buildup; frost protection for regions with sustained sub-zero temperatures (insulation or heating trace). Maintenance schedule: weekly: visual check of oil level in oil storage chamber; monthly: check sediment trap depth (desludge when greater than 50 percent full); 6-monthly: sample and test effluent quality (TPH less than 5 or 100 mg/L per BS EN 858 class); annually: full inspection of coalescing plate pack (clean if fouled), check structural integrity, update maintenance record. Oil disposal: collected oil (plus water phase, LNAPL mixture) removed by licensed waste contractor; classified as hazardous waste (EWC 13 07 03 - oily mixtures); manifest required (Hazardous Waste Regulations 2005). Full bypass events: during extreme rainfall, untreated bypass flow may reach the watercourse; Environmental Permit may require spill contingency plans for bypass events. For very high-risk sites (fuel tanker loading, bulk fuel storage), interceptors must be designed for credible spill scenarios (full tank truck discharge), not just routine stormwater.

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    Frequently Asked Questions

    What is the difference between Class 1 and Class 2 oil separators?

    BS EN 858 classifies oil-water separators by their effluent quality performance: Class I separators: achieve effluent less than or equal to 5 mg/L total hydrocarbons (as n-alkanes C10 to C40, measured by IR spectrophotometry); required for sensitive receiving waters, water protection zones, and high-risk installations (petrol stations with forecourt runoff, fuel storage areas, vehicle washing); typically incorporate coalescing plate packs to enhance gravity separation; more expensive and larger than Class II. Class II separators: achieve effluent less than or equal to 100 mg/L total hydrocarbons; gravity-only separation without plate packs; suitable for general car parks (over 200 spaces typically required per PPG2), vehicle access areas, road drainage where TPH risk is lower; more compact and lower cost. Both classes include: bypass provision for flows exceeding nominal size (NS) rated flow; silt trap (sediment interceptor) upstream; automatic closure device (hydrostatic float valve) that closes the oil storage chamber outlet when oil storage is full, preventing oil carryover. Selection: BS EN 858-2 and PPG guidance specify which class is required based on land use type, sensitivity of receiving water, and proximity to groundwater source protection zones. Class I is required near SPZ1 and SPZ2 groundwater protection zones; Class II may suffice for Class 3 and lower-risk locations.

    Do all car parks need oil-water separators?

    Not all car parks legally require oil-water separators, but the threshold and assessment depends on risk, receiving water sensitivity, and local regulatory requirements. UK Environment Agency guidance (PPG2, PPG7, Pollution Prevention guidance): OWS required for: petrol station forecourts (Class I separator mandatory); vehicle washing facilities (all types); car parks and hard standings over 800 m2 or greater than 50 car parking spaces where surface water could reach a watercourse, soakaway, or coastal water; lorry parks, coach parks, and vehicle maintenance areas. Not required by default: small car parks (less than 800 m2 / less than 50 spaces) draining to combined sewer (though check Environmental Permit); sealed roof-draining car parks where surface is not exposed to vehicle traffic. CIRIA C532 (Highway Drainage): OWS required for certain highway drainage categories. Planning conditions: local authorities increasingly impose OWS requirements on new car park planning consents regardless of size if within a sensitive catchment. Best practice: sustainable drainage systems (SuDS) - permeable paving, bioretention - provide hydrocarbon removal through adsorption and biodegradation and may eliminate need for separate OWS; a SuDS treatment train (permeable paving + bioretention) can achieve Class I equivalent hydrocarbon removal for car parks.

    How often should an oil-water separator be emptied?

    Oil-water separator maintenance and emptying frequency per BS EN 858-2 and EA PPG guidance: Oil storage chamber: inspect monthly by checking oil thickness (dipstick or sight glass); arrange emptying when oil layer exceeds 50 mm depth or approaches manufacturer-specified maximum storage capacity (typically 1.5 to 3.0 times NS in litres, e.g. NS15 Class I separator holds approximately 450 L maximum oil); for petrol stations with high spill risk: monthly inspection mandatory. Silt trap: inspect every 6 months; desludge when sediment depth exceeds 50 percent of silt trap volume (typically 100 to 300 mm in standard precast OWS); high-sediment sites (construction area drainage) may require monthly emptying. Annual service: full inspection by qualified contractor; clean coalescing plates (jet wash with low-pressure hot water if fouled with biofilm or wax); check automatic closure device (float valve) operation; sample outlet water and measure TPH (should be less than 5 mg/L for Class I; less than 100 mg/L for Class II). Maintenance record: keep records for 3 years minimum (good practice); required as evidence of compliance with Environmental Permit condition. Oil waste disposal: EA Waste Carrier licence required for contractor; EWC code 13 07 03 (oily waste water mixtures); consignment note required if over 500 kg.

    What regulations govern stormwater discharge from industrial sites?

    UK stormwater discharge regulation for industrial sites: (1) Environmental Permitting Regulations 2016 (EPR): most surface water discharges from industrial sites are 'water discharge activities' requiring either a Standard Rules Environmental Permit (SR) or bespoke permit; standard permits available for some lower-risk scenarios (e.g. SR2010 No.9 for stormwater from certain industrial sites); TPH limits typically 5 to 15 mg/L, suspended solids 30 to 100 mg/L; (2) Water Resources Act 1991, Section 85 (now implemented through EPR): causing or knowingly permitting polluting matter to enter controlled waters is an offence; EA can prosecute without prior warning for serious pollution events (unlimited fine in Crown Court, 2-year imprisonment for individuals); (3) Trade Effluent Consent (Water Industry Act 1991): if stormwater is discharged to the public sewer, trade effluent consent from the sewerage undertaker is required if it contains industrial contaminants above domestic thresholds; (4) Groundwater Environmental Permit: required for indirect discharge to groundwater via infiltration (soakaways on industrial sites); (5) Contaminated land (Part IIA, EPA 1990): if industrial activity has caused contamination of underlying soil or groundwater, a site investigation and remediation plan under Part IIA may be triggered regardless of stormwater permit compliance.

    Case Study·Industrial stormwater management
    Challenge

    A large vehicle storage and preparation facility in the East Midlands with 12 ha of sealed hardstanding was discharging untreated stormwater to an adjacent ordinary watercourse under a pre-2010 consent. An EA inspection identified TPH exceedances of up to 38 mg/L (above the Environmental Permit limit of 5 mg/L) following vehicle washing and tyre-change operations, and issued a Compliance Assessment and an improvement requirement.

    Approach

    The environmental consultant designed a stormwater treatment train comprising a 4,500 L Class I NS 30 separator (BS EN 858-1, achieving below 5 mg/L TPH) preceded by a 3,000 L silt trap, installed in-ground at the site's lowest point. The concrete chamber was manufactured from sulphate-resistant Portland cement. A hydrocarbon sensor alarm with automatic closure valve was fitted. Monthly inspection records and quarterly TPH sampling were added to the site's Environmental Permit compliance monitoring schedule.

    Outcome

    Post-installation TPH sampling over four quarterly monitoring events showed outlet concentrations of 1.2 to 3.8 mg/L, all below the 5 mg/L permit limit. EA confirmed compliance at a follow-up inspection 10 months after installation. The site avoided the threatened enforcement notice and associated GBP 45,000 penalty. Annual maintenance cost (oil chamber pumping, silt trap desludging) is GBP 3,200.

    Questions to Ask Shortlisted Providers

    1. 1

      What is the receiving water type (ordinary watercourse, main river, coastal water, groundwater via soakaway) and is it within a Source Protection Zone?

      Receiving water sensitivity determines whether a Class I (below 5 mg/L TPH) or Class II (below 100 mg/L TPH) separator is required; SPZ1 and SPZ2 require Class I and may require additional treatment such as bioretention or activated carbon polishing.

    2. 2

      What is the peak stormwater flow rate (m3/hr) from the contributing catchment at the 1:10 year return period event?

      BS EN 858-2 nominal size (NS) selection is based on peak throughput flow rate; an undersized separator allows short-circuit flow above the separator's coalescence design velocity, causing hydrocarbon carryover.

    3. 3

      What types of hydrocarbons are present (mineral oil, diesel, petrol, PAHs) and is the separator surface water discharge to a groundwater source protection zone?

      The presence of volatile components (petrol) affects separator design and requires vapour-tight covers; petrol stations require Class I plus additional venting to prevent explosion risk; SPZ1 may require activated carbon polishing.

    4. 4

      Is there a current Environmental Permit for the surface water discharge and when was the last TPH compliance monitoring conducted?

      EPR permits include specific conditions on separator maintenance and monitoring frequency; failure to maintain records or conduct sampling is a permit breach regardless of whether effluent quality limits are being met.

    5. 5

      What is the separator maintenance regime and who holds the oil waste carrier licence for removal of separated hydrocarbons?

      BS EN 858-2 requires monthly inspection and emptying when oil storage reaches 50 mm depth; oil waste removal requires an EA-registered waste carrier; failure to maintain the separator causes compliance failure and potential pollution event.

    What Drives Cost in This Category

    Separator nominal size (NS) and class selection

    Class II precast concrete separators (NS 6 to NS 30) cost GBP 2,500 to 12,000 supply-only; Class I coalescing plate units cost GBP 8,000 to 35,000; GRP units cost 15 to 25% less than concrete but require WRAS/EA acceptance for the specific installation.

    Civil installation works (excavation, backfill, connections)

    Below-ground separator installation typically costs GBP 5,000 to 20,000 depending on access, ground conditions, depth, and inlet/outlet pipework complexity; high-groundwater sites require sheet piling or dewatering.

    Hydrocarbon sensor and automatic closure device

    Automatic closure (hydrostatic float valve) is standard on BS EN 858 separators at no significant premium; remote hydrocarbon sensors with SMS alarm add GBP 800 to 3,500 per separator but are required for unattended sites under some EA permits.

    Annual maintenance and oil removal cost

    Annual maintenance (inspection, oil pumping, silt desludge) costs GBP 1,500 to 5,000 per separator depending on size and oil accumulation rate; oil waste disposal by licensed contractor costs GBP 100 to 300 per visit.

    Key Regulations & Standards

    BS EN 858-1:2002 and BS EN 858-2:2003 Separator Systems for Light Liquids

    BS EN 858-1 specifies design, testing, and performance requirements for Class I (below 5 mg/L TPH) and Class II (below 100 mg/L) separators; BS EN 858-2 covers selection of nominal size, installation, operation, and maintenance; compliance is required for EA-regulated surface water discharges.

    Environmental Permitting Regulations 2016 and Water Discharge Activity Permits

    Surface water discharges from industrial sites containing hydrocarbons are regulated water discharge activities requiring an Environmental Permit; Standard Rules Permit SR2010 No.9 is available for some lower-risk scenarios; bespoke permits specify TPH limits, monitoring frequency, and maintenance requirements.

    Water Resources Act 1991 Section 85 (now EPR 2016) Pollution Offence

    Causing or knowingly permitting polluting matter to enter controlled waters is a criminal offence; the EA can prosecute directly without a prior warning; unlimited fine in Crown Court; incidents involving petroleum products entering watercourses are a prosecution priority.

    PPG2 Above Ground Oil Storage and PPG26 Pollution Prevention

    EA Pollution Prevention Guidelines specify OWS requirements for petrol stations, vehicle washdown areas, and other high-risk land uses; PPG26 recommends spill containment bunds and stormwater management plans as part of site environmental management.

    Explore Related Categories

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    Browse the full provider directory

    Comparing stormwater oil-water separator companies is one slice of a larger shortlisting decision. Explore the complete directory of water treatment suppliers, then filter by region, sector, and technology before you request scoped proposals.

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