Monitoring & Digital

    Industrial Water Quality Testing Companies

    Accredited labs and on-site testing services for process water, effluent, and regulatory compliance monitoring.

    147 providers

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    FT Ductile Ltd logo

    FT Ductile Ltd

    United Kingdom

    Ductile Iron Pipe and Fittings FT Ductile supplies a wide range of high quality, ductile iron pipes, fittings and ancillary products to the water industry for both potable and dirty water. Large stocks at our premises allow us to fulfil many orders on a next-day basis. Whatever the size of project, we can provide a tailor-made solution to include the sourcing, supply, delivery and after sales service. We supply ductile iron pipes in a range of diameters, from 80mm to 1600mm. Over the years, the range of products supplied by FT Ductile has expanded to include everything from ductile iron pipes to flange adaptors and valves. We have a number of exclusive distribution agreements in place and all products conform to DWI standards. Ductile iron pipes are most commonly used for drinking water and sewage distribution, usually lined with cement mortar in order to prevent corrosion over time. The benefit of using ductile iron pipes in potable and waste water systems is that they are stronger and resistant to fracture. FT Ductile has supply chain links with companies in Europe, USA and the Far East which has given us strong foundations for understanding how other cultures and nationalities like to do business. This information is invaluable when we come to export our pipe products and services. Wherever you are based, and whatever you require, from individual items such as valves and fittings, through to more complex orders for lengths of ductile pipe and fittings, we will provide you with our best possible price. And you can rest assured that through our extensive transport links, our products will reach you in a safe and timely manner. To find out more regarding our ductile iron pipes and other products, please feel free to contact us.

    Treatment Works Products/Services
    Networks - Sewerage
    Gearing Recruitment Solutions (GRS Ltd) logo

    Gearing Recruitment Solutions (GRS Ltd)

    United Kingdom

    Gearing Recruitment Solutions (GRS Ltd) is a leading technical recruitment agency with over 20 years of experience in the industry. Our team of experts specialises in providing white-collar permanent and freelance recruitment solutions for construction and water industries. We have supported large tier one M&E contractors through to local regional-based businesses in construction, ensuring that the companies we partner with share similar values and principles to us. This ensures that the candidates we place have the best opportunity to progress and develop in their careers. In the water industry, we have extensive experience in MEICA engineering for large industrial contracts and have recruited for top Tier 1 civils and infrastructure companies within construction, maintenance, and consultancy engineering. We have also partnered with large and regional MEICA contractors to provide recruitment solutions for AMP frameworks across the UK, including Thames Water, Southern Water, Severn Trent, United Utilities, and Scottish Water. Our recruitment services include positions such as: M&E Construction: Senior Appointments/Directors M&E Operations Manager Mechanical Project or Contracts Managers Electrical Project or Contracts Managers M&E Estimators, M&E Quantity Surveyors M&E Supervisors M&E Managers for main contractors Water: Directors Framework Managers Proposal Managers/Estimators, MEICA Managers MEICA Project Engineers Mechanical Supervisors Electrical Supervisors Quantity Surveyors Design Engineers/CAD Commissioning Engineers Process Engineers Health & Safety Sub Agents Civil Engineers At GRS, we pride ourselves on our honesty, true partnership, passion for our sector, and a continuous ambition to improve our technical knowledge. This allows us to perfectly position ourselves to cover all of your recruitment needs.

    Recruitment
    GEDA Construction logo

    GEDA Construction

    United Kingdom

    GEDA Construction is a leading Building and Civil Engineering Company. Our technical expertise coupled with a committed personal approach has contributed to our continued success in the delivery of high quality projects. Since the 1970’s GEDA has been providing a comprehensive building and civil engineering services offering construction excellence to private and public sector clients across the UK and Ireland. We specialise in water and wastewater infrastructure including reservoirs, water and wastewater treatment works, shafts, tunnels and pipelines as well as educational, residential, community and industrial markets. With expertise across a wide variety of disciplines, we provide our clients with innovative and imaginative solutions that meet their needs in a safe, sustainable and cost-effective way.

    Networks - Sewerage
    Asset Maintenance & Rehabilitation
    Glanua Group logo

    Glanua Group

    United Kingdom

    Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build and operate critical water and wastewater infrastructure across Ireland and the UK. Glanua is passionate about solving today’s environmental challenges and delivering a decarbonised and sustainable world. At Glanua, we design, build, operate, and maintain innovative water and wastewater solutions that protect the environment and support the people who depend on them. Sustainability is at our core — it’s why we innovate, how we work and the future we’re building. We’re reimagining how the world treats water, using cutting-edge technology, smart design and fresh thinking to deliver cleaner, greener results for both industry and the public sector. With global ambitions and a track record of turning ideas into reality, we’re on an exciting journey of growth and impact. Glanua are a partner to major water utilities in Ireland and the UK, including Uisce Éireann (formally Irish Water), Thames Water, Yorkshire Water, Affinity Water and Northern Ireland Water. In the industrial sector, their clients include prominent names such as ABP, Glanbia, Kerry Group, and other key players in the food and beverage, pharmaceutical, and distillery industries. Core Values Glanua lives by our core values, including Safety and Well-being, Innovation, Integrity, Collaboration, Courage, Agility, Accountability, Diversity, and Inclusion. These values guide our actions and decisions, ensuring that we uphold the highest standards in everything we do. Our talented team comprises over 500 professionals across Ireland and the UK. Our UK office is headquartered in Hertfordshire and we also have offices in Reading, Sheffield, Northern Ireland, Galway and a manufacturing facility in Navan, Co Meath. Sustainability At Glanua, we understand the vital role we play in ensuring the delivery of safe and high-quality drinking water, as well as the proper treatment of wastewater before it is discharged into the environment. Committed to building today without compromising the environment for future generations, sustainability lies at the core of what we do. To strengthen our commitment, we have partnered with Earthshine, a leading sustainability consultant to develop our sustainability strategy that aligns with our values and ensures that every engineering solution we deliver contributes to a greener and more sustainable world. Future growth Glanua is on a growth trajectory, with ambitious plans to reach €400 million in the next five years. As we continue to expand our capabilities and service offerings, we remain committed to being at the forefront of sustainable engineering solutions, driving positive change in the water and wastewater infrastructure landscape in Ireland, UK, and internationally. Our growth is evident in the recent expansion of our team by over 150 people in 2023, bringing our total workforce to over 500 people. In 2024, we acquired O&M specialist company, Aqua Operations and in 2025, we acquired Anaerobic Digestion specialist company, Marches Biogas building a complete solutions provider in Water, Wastewater and Bioresources.

    Networks - Water Supply
    Contractors
    Gurney Environmental Ltd logo

    Gurney Environmental Ltd

    United Kingdom

    Gurney Environmental is a well established provider of systems and technologies used in the treatment of water and wastewater. From water supply to water re-use, we have designed and developed innovative, low cost and sustainable systems for the water and wastewater industries. Low CAPEX plus low OPEX equals low TOTEX. True sustainability is the benchmark for success with Gurney. We offer unique water and wastewater treatment systems, equipment and design including zero-to-low energy www and reservoir destratification systems. Our experience and knowledge of the water and wastewater treatment industries has successfully helped a wide variety of clients including major landowners (such as the Crown Estate) and many of the UK’s water utility companies. Our systems are today recognised internationally with a growing number of foreign municipals. Gurney has a total commitment to quality. Our systems and solutions represent the finest in long-term value, which is why we place such a strong emphasis on equipment with sturdy construction and fewer moving parts. Our commitment to a low total life cost is a key part of a commitment to quality.

    Treatment Process Technologies
    Hewitech UK Ltd logo

    Hewitech UK Ltd

    United Kingdom

    Hewitech UK Ltd operate in the Stormwater, Wastewater and Cooling Towers markets in the UK Hewitech  design, manufacture and supply a comprehensive range of products for use in the wastewater, stormwater retention and infiltration, and cooling tower industries. Our structured media filters for biological wastewater treatment applications are suitable for both municipal and industrial waste and potable water, with our products being used for: BOD treatment and nitrification in trickling filters (NTF) Submerged aerated filters (SAF) Biologically activated fixed film filters (BAFF) Primary sedimentation through lamella, in new and existing applications. Hewitech’s SuDS systems for stormwater retention and infiltration are the strongest available in the stormwater market, proven by rigorously testing for long term performance. While our comprehensive range of plastic media fill, air louvres and drift eliminators have the high module strength, thermal efficiency, and excellent material temperature performance to meet all cooling tower applications. Our product range includes: HewiFILL HewiPIER HewiTUBE Variobox Hewitech work closely with consultants, designers, architects and engineers to ensure smooth design and install on all projects.

    Stormwater Storage
    iNPIPE PRODUCTS™ logo

    iNPIPE PRODUCTS™

    United Kingdom

    For over 40 years, iNPIPE PRODUCTS™ has been an acknowledged world leader in the design, manufacture, and supply of advanced pipeline pigging products and services. Our expertise extends across a wide range of industries, with tailored solutions for water pipelines, including pig launching/receiving systems, pig handling equipment, bespoke cleaning and inspection tools, and pig tracking technologies. Our dedicated manufacturing and testing site can produce cleaning tools up to 3000mm in diameter. Our cutting-edge pipeline cleaning and inspection solutions ensure maximum asset integrity while promoting environmental sustainability. iNPIPE PRODUCTS™ offers a more eco-friendly alternative to traditional methods, reducing waste and emissions, while achieving the highest standards of pipeline cleanliness. Clean pipelines enhance performance, protect capital investments, and minimises operational downtime—all while reducing environmental impacts. With extensive engineering expertise and integrated manufacturing capabilities, we deliver custom-engineered turnkey solutions that meet the most demanding client requirements. Our Services Include: Tailored engineering solutions and expert consultancy Bespoke design, manufacturing and supply of pipeline tools Full project management and on-site technical support Advanced cleaning, inspection and maintenance services Visual inspection of pipeline interiors Debris mapping for internal condition analysis Validation of pipeline cleaning regimes for optimal performance Our SMART Pigging solutions offer industry-leading pipeline inspection capabilities that ensure maximum flow assurance and comprehensive asset integrity; utilising advanced technologies like the PHOENIX Debris Mapping Tool and Camera Integrated Pig for pipeline assessment, joint inspection and crossing validation prior to slip-lining. Trusted by global operators, iNPIPE PRODUCTS™ is committed to quality, safety and sustainability, with ISO 9001, ISO 45001 and ISO 14001 certifications. We are proud to be RoSPA Health & Safety Award winners for seven consecutive years, achieving the Gold Medal in 2024.

    Mapping & Modelling
    Accreditations
    Intelect logo

    Intelect

    United Kingdom

    At Intelect, we have over 25 years experience in providing engineering expertise to clients in process industries. Intelect have worked with Northumbrian Water and its Tier 1 suppliers and partners for over a decade, and during this time, we have provided services in design, electrical installation, control panels and pipework services. Our attention to detail, quality, and attitude to Health and Safety has been consistently recognised by our clients over the years, with us receiving numerous awards for the projects we have completed. Our flexible workforce of apprentices, engineers and project managers allows us to efficiently complete any project to our client’s requirements. On-going innovation and investment in our business means that we have the latest training and technology to execute high quality engineering projects, from design through to commissioning, all whilst maintaining best practices in Health and Safety. Intelect are committed to working in partnership with both contractors and suppliers within the utility sector, sharing our expertise and knowledge to help support companies who provide utilities to homes and businesses across the North East and the rest of the country.

    Networks - Water Supply
    Contractors
    JN Bentley Ltd logo

    JN Bentley Ltd

    United Kingdom

    JN Bentley Ltd (JNB) is a leading, privately owned construction services provider in the UK. We now have an annual turnover in the region of £100 million, generated from projects in both the building and civil engineering markets. JN Bentley JN Bentley delivers civil engineering contracting services, together with mechanical and electrical expertise. Founded in 1972, the company has grown largely from repeat work, maintaining a focus on providing construction services with an open and honest approach. The JN Bentley team numbers over 2,000 colleagues. We pride ourselves on our large, directly employed construction workforce, a team that gives us and our clients added assurances for safety and quality. We look to find innovative solutions to traditional construction challenges, applying the latest technologies to drive efficiency and reach sustainable outcomes. Across JN Bentley and our design and build companies MMB and JBA Bentley, annual revenue now exceeds £500 million. Mott MacDonald Bentley (MMB) MMB provides fully integrated civil engineering feasibility, design, construction and commissioning services to the UK water sector. Established in 1999, it harnesses the contracting strength of JN Bentley and the design specialisms of Mott MacDonald to form a 3,000-strong team – with further expertise brought in from across the Mott MacDonald Group when required. MMB was formed specifically to deliver long-term, high-volume capital programmes collaboratively with water companies. With a focus on innovation, affordability, and flexibility, since securing its first contracts with Yorkshire Water in AMP3, MMB has grown to deliver work for eight of the largest water companies in the UK.

    Renewables & Energy Management
    Contractors
    KEE Process logo

    KEE Process

    United Kingdom

    Started in 1955, KEE design, manufacture, supply, install, commission and service off mains drainage products, including pumps and pumping equipment, septic tanks and sewage treatment plant products. KEE also offer full evaluation and design through their nationwide servicing team, offering fully integrated plant operation, an out-of-hours call centre, treatment plant refurbishment, upgrades and plant hire. KEE’s expertise in design, manufacture, servicing, refurbishment, maintenance and operation of equipment for all types of wastewater treatment plants is backed by over 65 years of experience and over 350,000 installations worldwide. KEE provide quality engineered wastewater treatment solutions priced to offer value for money. Continuing investment in R&D ensures that the products and services supplied by KEE incorporate the latest technology to protect the environment. TREATMENT SOLUTIONS & SERVICES Rotating Biological Contactor (RBC) Wastewater Treatment Systems KEE NuDisc® & NuDisc-R® single piece packaged RBC treatment plants capable of treating populations up to 1,000 in a single packaged plant. Modular packaged DC/DN RBC treatment systems. Large diameter RBCs for site erection. Submerged Aerated Filters Modular packaged and single piece KEE NuFlow treatment systems for domestic applications up to 50 PE. Activated Sludge Systems Extended aeration (EA), sequencing batch reactors (SBR) and oxidation ditch. Anaerobic Reactor Industrial wastewater treatment. Settlement Tanks and Packaged Pumping Stations Primary or final settlement tanks. Dispersed Air Flotation Systems (DAF) KEE Microfloat® Fine Bubble Aeration Systems KEE Aspirator Aerators. KEE Triton Aerator/Mixer. The Biological Solution to Fat, Oil and Grease KEE Bio-Guard – The Grease Digester. Parts and Service Service, Maintenance and Operation. Replacement Parts and Associated Products. Plant Hire. Emergency Service KEE Emergency Call Centre for Managed Contracts.

    Treatment Works Products/Services
    Asset Maintenance & Rehabilitation
    Lloyd Morris Electrical Ltd logo

    Lloyd Morris Electrical Ltd

    United Kingdom

    Lloyd Morris Electrical Limited is a company of electrical engineers, specialising in the design, manufacture and installation of electrical distribution and control systems for industrial and commercial applications. Having established the company in 1974, it has since developed in to a well-recognised and reputable organisation within the industry and is keen to develop professional and pro-active relationships with its clients. LME offers Design for Manufacture and Assembly (DfMA) across the complete electrical service supply. The off-site manufacture of pre-assembled and cabled low voltage switch/plant rooms offers significant benefits in relation to safety, quality, cost and program. Control panels LME pride ourselves in being at the forefront of control panel manufacturing. LME have an unrivalled level of expertise and service, and we make sure that all our control panels are designed and built to match your exact requirements. LME provide control panels constructed from Form 1 through to Form 4. With our control panels we consider the space available and all special site requirements. We can supply off the shelf or bespoke steelwork so that each order can be custom built to specific requirements and comply with your general and exact specifications. Intelligent design motor control centres minimise the number of components required as various functions are integrated into single intelligent devices. LME offer intelligent motor control centres manufactured to the same construction range as our conventional units which are all bespoke and are BS EN61439-1&2 compliant. LV switchboards LME manufacture bespoke LV switchboards, each assembly can be custom built to specific requirements and comply with client’s exact specifications providing LV switchboards constructed from Form 1 through to Form 4, Type 1 to Type 7. With our LV switchboards, we can accommodate various types of cable entries whether top, bottom or a mixture of both, front or rear access, or we can even manufacture a hybrid solution using a combination of any form and type. Electrical design An important aspect in the development of any project is the design and provision of professionally presented documentation. Therefore, to meet the varying needs of each client, our team of draughtsman are well equipped with the latest AutoCAD systems. Our project engineers use software tools to perform cable and lighting calculations, cable and instrumentation scheduling, rating of protection devices, and overall contract programming and scheduling. Electrical installations LME have the resource, capability, and experience to provide a complete electrical installation, for any water plant or factory. With a large, fully qualified, and competent workforce combined with an extensive fleet of vehicles, no task is too large and no location too remote. With this structure and experience, we can offer a comprehensive range of installation services covering locations throughout the United Kingdom. Systems integration To provide a fully integrated approach to projects, the company has the facility to develop complex and highly structured software. Our systems engineers have considerable experience in all aspects of software design and development, ranging from basic PLC systems and HMI/SCADA, controlling process and manufacturing plant, through to commercial and industrial databases and high-level management information systems (MIS), producing essential business information.

    Networks - Sewerage
    Accreditations
    Nereda logo

    Nereda

    United Kingdom

    Nereda® technology from Royal HaskoningDHV offers sustainable wastewater treatment solutions for municipal and industrial water. The natural sewage treatment process purifies water with minimal or no chemical usage by using the patented aerobic granular sludge technology. Compared to activated sludge technologies, the biological treatment power of the technology is much larger, while saving up to 50% on energy costs, delivering high quality effluent for low costs and requiring only a quarter of the area of conventional activated sludge installations. Biomass in the process develops as fast settling aerobic granular sludge. These granules have excellent settling properties, so the process does not require a separate time-consuming decant phase like conventional SBR’s. All the biological treatment processes take place simultaneously in the granules, requiring only one tank. The technology is very versatile; it can be developed as a new build or used to retrofit existing conventional CAS or SBR plants. The benefits of the technology include: Excellent treatment results and settling properties: Compared to activated sludge technologies, the biological treatment power of the technology is much larger as a considerably higher concentration of biological active mass is applied that in addition has a much higher content of microorganism that are crucial for biological nitrogen and phosphate removal. Sustainable: Compared to conventional wastewater treatment processes, the technology not only has significantly lower energy consumption and associated greenhouse gas emission, but also produces, commonly without the use of waste generating chemicals, a remarkably high effluent quality. Cost effective: The technology results in construction costs that are lower than for conventional technology as for example, tank volumes are up to four times smaller and less equipment is required. Small physical footprint: Its footprint at sewage treatment plants is reduced due to the full nutrient removal process taking place in one single reactor. Easy to operate: It has proved in operation to satisfy the most stringent purification requirements. Thanks to the nature of the technology, plant operation is easy and process performance robust. The technology is proven and applicable for even the largest applications. Currently, there are over 70 wastewater treatment plants in operation or under construction all over the world

    Designers
    P&I Generators Ltd logo

    P&I Generators Ltd

    United Kingdom

    P & I are a friendly, family-run business that specialises in critical power solutions. Founded in 1999, the company has grown to become a leading independent supplier of generators and UPS systems with a genuine commitment to quality and service. We ensure that even in the toughest of environments, you can trust that your power is protected. Depending on your needs, we offer the full end-to-end service including design, project management, installation, commissioning and dedicated service support. Generator Service & Maintenance: Our service contracts are aimed to give you peace of mind so you know that in the event of a power outage, you can rely on your critical power equipment. UPS Service & Maintenance: We offer a comprehensive and cost-effective range of service plans to ensure all parts of your UPS system remain fully functional and at optimal performance. Control Systems Services: We aim to make your solution fit both your current and future needs with bespoke design systems to meet your exact requirements. Critical Power Hardware: P&I have grown to become a leading independent supplier of generators and UPS systems. We work with the likes of Salicru and Riello. Projects: Our experienced project management team can support every stage of your project from start to finish. Let us do the leg work whilst you focus on your commitments. Hire: Our fleet includes 8 kVA to multi-megawatt generators, 100Kw to 2MW mobile load banks, together with many other hire solutions. Introducing the new Clean Power Industrial Range: Design, project management, installation, commissioning and dedicated service support for your critical power needs.

    Programme Management
    Designers
    PLR Building Services Ltd logo

    PLR Building Services Ltd

    United Kingdom

    Here at PLR Building Services, our team brings extensive experience in the water industry, specialising in top-tier electrical installation work for framework companies across the utility companies. Our primary focus is on ensuring compliance with regulatory requirements for water systems. We offer a comprehensive electrical design package and project management services. Our team is equipped with the latest health, safety, and electrical qualifications to meet all your project requirements efficiently. As a NICEIC approved contractor, we excel in both new systems installation and the refurbishment of existing installations. Water treatment Wastewater treatment Sludge treatment Pumping stations Reservoirs Inspection Testing Electrical Design Project managing

    Contractors
    Water Pumping Stations
    PWNT logo

    PWNT

    United Kingdom

    PWNT, part of the Nijhuis Saur Industries (NSI) group, delivers cutting-edge solutions and consultancy services to meet the diverse needs of water utilities worldwide. Building on PWN’s rich legacy, PWNT leverages over 100 years of expertise to drive innovation in water treatment, with a strong focus on drinking water. Our pioneering technologies, including SIX® (Suspended Ion Exchange), ILCA® (Inline Coagulation and Adsorption), and CeraMac® (Ceramic Membrane Microfiltration), offer efficient, sustainable, and cost-effective treatment solutions for various water sources, ensuring the delivery of high-quality drinking water. Beyond technology development, PWNT offers comprehensive consultancy services in the study, design, optimization, and integration of water treatment technologies. PWNT is well-equipped to provide expert guidance on both emerging and traditional processes, such as pellet softening, advanced oxidation, GAC filtration, and coagulation. With a strong global presence, PWNT has successfully implemented large-scale projects and pilot installations across the world. Our innovative technologies are trusted by water utilities for their ability to address complex water quality challenges and adapt to diverse environmental conditions. Headquartered in the Netherlands, PWNT continues to foster strong partnerships with leading universities and global companies, committed to advancing sustainable water treatment technologies and helping utilities achieve their water quality goals.

    Designers
    R2M Limited logo

    R2M Limited

    United Kingdom

    At R2M, we are driven by a passion for creating innovative solutions that help build a smarter, more resilient water industry. Our mission is to deliver effective, high-quality products and services to UK water utilities and contractors, continually striving to enhance the nation's water supply for future generations. Founded in 2003 as a supplier of pipes and fittings, R2M quickly earned a reputation for reliability through our extensive product range and robust stock levels—ensuring our customers always had what they needed, when they needed it. Over the years, we have evolved from a trusted supplier into a comprehensive manufacturer and installer too. Today, we offer end-to-end solutions—all under one roof—streamlining the process for our customers and providing exceptional value at every stage. We are proud to be used trusted by all water utilities and contractors across the UK. Since 2019, R2M has proudly been a member of the Hawle Austria Group—a global network of like-minded, quality-focused companies including the likes of Hawle Austria, Erhard, Nova Siria, and Özkan. This partnership gives us exclusive access to a wide portfolio of innovative and proven products from across the group, allowing us to offer tailored solutions that meet the evolving needs of our customers. Being a part of this established and experienced group strengthens our capabilities, expands our product range, and ensures we stay at the forefront of the industry—so our customers always benefit from world-class technologies backed by local expertise. Are you ready to discover how our solutions can support your next project? Get in touch with us today on 01282 778 030.

    Networks - Water Supply
    Asset Maintenance & Rehabilitation
    Roperhurst Limited logo

    Roperhurst Limited

    United Kingdom

    Roperhurst: a UK in-house designer, manufacturer and installer of fume and odour control treatment plant and equipment, chemical storage vessels, dosing and delivery systems. Since 1976 Roperhurst has worked with a range of customers, big and small, global and local, on specialist plastic and environmental engineering projects. Roperhurst is quality certified to ISO9001:2015, SSIP approved and a long-standing member of BESA. Fume/odour: Roperhurst delivers a comprehensive proven range of solutions including catalytic iron filters, carbon absorbers, bio-filters, bio-scrubbers, biogas and chemical scrubbers. Utilising either organic or synthetic media filled units, all designed and built at our UK manufacturing facility, and each offering a green, smart and simple-to-operate solution to your fume, odour and VOC problems. Chemical storage/dosing/delivery: Roperhurst offers bespoke tanks and vessels for the safe long-term storage of chemicals, each specifically matched to meet your individual needs. Additionally, we fabricate and install dosing cabinets and day tanks with dual containment delivery pipework, all designed to dispense chemicals safely to the point of consumption. Delivery ductwork: Plastic ductwork for dealing with fume/odours created by chemical, biological or radiological processes have a high level of inherent risk.  This means that you need assurance that the ductwork will be fabricated correctly and installed competently. The UK standard for fabrication and installation of plastic ductwork is DW154, published by BESA, the Building Engineering Services Association (formerly HVCA).  Roperhurst is a UK market leader in this field: Roperhurst’s founder, Graham Handley, chaired the HVCA committee that wrote the 1st edition of DW154 in 2000. Roperhurst continues to work closely with BESA to improve standards. Roperhurst, as a BESA plastic ductwork specialist, ensures that our manufacturing and site work is regularly audited by external specialists to ensure that our work meets all current standards. Roperhurst is one of the few plastic ductwork specialists with its own in-house fibreglass division and specialist installation and testing teams. At Roperhurst we don’t need to rely on sub-contractors to produce elements of the project, which can be a cause of quality and compliance issues. Our plastics fabricator welders are time served and certified to BS EN 13067, and our laminators have been assessed under BS 4994.

    Designers
    Saint Gobain PAM UK logo

    Saint Gobain PAM UK

    United Kingdom

    Saint Gobain PAM UK is the premier supplier of ductile iron and cast iron products to the UK's key utilities, telecoms, highways, civil engineering, construction and housing companies. We’re a leading manufacturer of ductile iron access covers, gully gratings, and pressure pipeline systems, helping the UK’s utility, highways, telecoms and infrastructure network owners reduce their whole-life costs and carbon while improving their asset durability and health and safety standards. We proudly manufacture our solutions, which enables us to not only meet but exceed the most stringent safety, quality and environmental standards. This means all of our access covers, gully gratings, and surface boxes are 100% recyclable. By providing innovative and sustainable access covers, gully gratings and pipeline systems that are right the first time, our customers enjoy quality and durable solutions that solve their problems the first time they’re installed – backed by the experts who designed them. 👨‍🔬🔬🥼 Saint-Gobain PAM UK is part of the Saint-Gobain Group, which employs over 166,000 people in 75 countries. With the international support of parent company Saint-Gobain, we offer unrivalled technical support, a total solution approach and unparalleled quality and innovation. Our solutions include: Ductile iron access covers, gully gratings and kerbside drainage solutions Ductile iron water and sewer pipes, fittings, valves, couplings and adaptors

    Treatment Works Products/Services
    Networks - Sewerage
    SAVECO Environmental Limited logo

    SAVECO Environmental Limited

    United Kingdom

    SAVECO Environmental Limited is a member of the globally operating WAMGROUP – market leaders in bulk materials handling since 1968. SAVECO provides state-of-the-art solutions to customers in the United Kingdom and in the Republic of Ireland, providing a comprehensive product range of machines and equipment designed for effluent pre-treatment and sludge treatment in both municipal and industrial wastewater treatment plants, as well as livestock farming and biogas plants. Delivering innovative, market-oriented, and industrially manufactured products, SAVECO has a proven track record of success – working on major projects with Tier 1 & 2 Contractors as well as leading water utilities. SAVECO is determined to supply the most comprehensive range of equipment available to deliver a one-stop solution to its customers. SAVECO assures customers in any place in the world the highest possible quality product and service at a fair price.

    Accreditations
    SILOTANK logo

    SILOTANK

    United Kingdom

    From industrial water tanks to turnkey odour control systems, we are the only UK manufacturers to offer 3 axis helical filament winding, providing high quality plastic storage tanks to the water and waste, microelectronics, chemical, pharmaceutical, paper & pulp, food processing, drinks and brewery industries. We are a leading manufacturer in the UK and Ireland for chemical, liquid and drinking water storage tanks, bunded storage tanks, process vessels, pressure vessels and environmental systems. Flexible in our approach to business and providing strong technical support, we are dedicated to supplying our customers the high quality product and service that you would expect from a market leader in specialist tanks. We manufacture to design standards BS4994:1987 , BS EN ISO 12573 & DVS2205 using FDA, WRAS and DWI approved materials. Our extensive ‘in house’ capabilities include mechanical engineering design along with chemical process design these activities are supported by a CAD network operating with AutoCAD 2D & Solid Works 3D software, FEA & Laminate Theory Analysis offering clients a complete service. We are innovative and continue to advance using the latest technology and materials used within the industry and have installed a CNC router and laser machine to support business development. RANGE OF EQUIPMENT & SERVICES OFFERED Storage, mixing and process tanks/vessels. Ranging in capacities from 50 litres to 200,000 litres. Tanks are manufactured using a variety of thermoplastics and GRP materials to suit the particular application including HDPE, polypropylene, UPVC/GRP (Aqua Pure – WRAS approved), polypropylene/GRP. The majority of our products are ‘bespoke’ designed and manufactured to suit the clients specific application. Odour and chemical fume scrubbing towers. Our ‘bespoke’ design and manufacture odour or chemical fume abatement equipment to suit most environmental applications. Our site teams are fully trained and able to complete on site installation within Ireland & UK including offloading, positioning, bolting down, assembly of any ancillary access steelwork as well as thermoplastic pipework and ductwork installations.

    Accreditations

    Industrial Water Quality Testing: Parameter Selection, Sampling Protocols, and Accreditation Requirements

    Industrial water quality testing covers source water, process water, cooling water, boiler feedwater, and effluent streams. Parameter selection follows the intended use: boiler feedwater requires hardness below 0.05 mg per L CaCO3, silica below 0.02 mg per L, iron below 0.01 mg per L, and dissolved oxygen below 0.007 mg per L per ASME consensus on operating practices for boiler feedwater; cooling water monitoring tracks conductivity (TDS proxy), pH, Langelier Saturation Index, Legionella (monthly culture per HSG274), and oxidising biocide residual. Effluent monitoring for regulatory compliance requires parameters specified in discharge consent: typically pH, BOD, SS, COD, ammonia, specific pollutants.

    Sampling protocols follow ISO 5667 series: representative sampling from well-mixed flow locations, avoidance of air entrainment, appropriate sample containers (borosilicate glass or HDPE depending on analyte), preservation (acidification to pH below 2 for metals, cooling to 4 degrees C for biological parameters, immediate fixation for dissolved oxygen), and maximum holding times before analysis (metals 6 months acidified, COD 7 days cooled, microbial parameters 6 to 24 hours). Composite sampling (24-hour flow-proportional composite) provides representative daily loads for effluent reporting; grab samples capture worst-case instantaneous concentrations for regulatory compliance checks.

    Laboratory accreditation to ISO 17025 is required for regulatory compliance sampling (Environment Agency consent conditions in UK specify UKAS-accredited analysis; US EPA specifies certified laboratory analysis for NPDES permit compliance). On-site testing using portable analysers (multi-parameter meters for pH, conductivity, turbidity, DO; photometric test kits for ammonia, nitrate, phosphate) provides real-time process control at lower cost than laboratory analysis. Online continuous monitoring instruments (ion-selective electrodes, optical turbidimeters, TOC analysers) provide trend data and alarm triggering for process exceedances. Combined accredited laboratory plus online monitoring gives both regulatory defensibility and process optimisation capability.

    Frequently Asked Questions

    What water quality tests are required for industrial discharge permits?

    NPDES and Environment Agency discharge consents specify the parameters, frequency, and method for compliance monitoring. Common required parameters: pH (continuous or daily), BOD5 (weekly), suspended solids (weekly), COD (weekly or monthly), ammonia (weekly), and sector-specific parameters (metals, hydrocarbons, cyanide, chlorine for relevant industries). US EPA 40 CFR Part 136 specifies approved analytical methods for NPDES compliance; UK Environment Agency Technical Guidance specifies appropriate British Standards (BS EN ISO series) methods. Analysis must be performed by a certified/accredited laboratory (UKAS in UK, state-certified in US). Self-monitoring results must be reported on Discharge Monitoring Reports (DMRs in US) or equivalent regulatory submissions within specified timescales (typically monthly).

    How often should cooling water be tested for Legionella?

    UK HSE ACOP L8 and HSG274 Part 1 require cooling tower water to be tested for Legionella by culture at minimum monthly intervals. Action limit is 1,000 CFU per L of Legionella (any species) requiring immediate corrective action and notification to the Responsible Person. Investigation level at 100 to 999 CFU per L triggers review of control measures. Target is below 100 CFU per L (ideally below the detection limit of 10 CFU per L). Quantitative PCR (qPCR) methods provide results in 24 to 48 hours versus 10 to 14 days for culture, enabling faster response to exceedances. HACCP-based risk assessments determine if additional testing (e.g., weekly during high-risk periods, after system disruption, after maintenance) is required beyond the statutory monthly minimum.

    What is the difference between grab sampling and composite sampling?

    A grab sample is a single sample collected at a specific moment, representing instantaneous water quality conditions. Used for parameters that change rapidly (pH, dissolved oxygen, volatile compounds) or where instantaneous worst-case is the regulatory requirement. A composite sample is collected over time (typically 24 hours) either at fixed time intervals (time-composite) or in proportion to flow rate (flow-proportional composite). Flow-proportional compositing requires an autosampler triggered by a flow meter signal, collecting a volume of sample proportional to the instantaneous flow rate. This produces a sample representative of the average quality over the sampling period, appropriate for load calculations and daily average compliance monitoring. Most NPDES and EA discharge permits specify the sampling method; effluent consents often require both grab (for pH) and composite (for BOD, SS) within the same monitoring programme.

    How do I choose between on-site testing and laboratory analysis?

    On-site testing using portable or online instruments: fast results (minutes), suitable for process control and trend monitoring, lower cost per test but requires calibration, QC, and trained operators. Accuracy: pH meters plus or minus 0.02 pH units, turbidimeters plus or minus 2 percent, DO sensors plus or minus 0.1 mg per L. Not acceptable for regulatory compliance (not UKAS/ISO 17025 accredited). Laboratory analysis by UKAS-accredited laboratory: traceable methods, method blanks, certified reference standards, proficiency testing scheme participation (EMQN, WEQAS for environmental). Required for: discharge consent compliance, environmental permit reporting, legal proceedings, and due diligence. Typical turnaround: 5 to 10 working days standard, 24 to 48 hours emergency. Best practice: continuous online monitoring for process control, monthly UKAS laboratory analysis for regulatory compliance.

    Case Study·Chemical manufacturing
    Challenge

    A specialty chemical site in the South East of England had no consolidated water quality monitoring programme. Cooling water, boiler feedwater, and trade effluent were all managed by different operational teams using different contractors and non-standardised sampling protocols. Three Environmental Permit non-compliances occurred in one year due to incorrect sampling method and laboratory reporting errors.

    Approach

    Appointed a single UKAS-accredited laboratory to cover all monitoring obligations under a unified contract. Developed a sampling and analysis plan aligned with ISO 5667 and the site's Environmental Permit conditions. Installed online TOC and pH monitors on the effluent channel for early-warning alerting before discharge. Trained site operators in sampling protocols with documented procedures and chain-of-custody forms.

    Outcome

    Zero Environmental Permit exceedances in the 24 months following the programme. Online monitoring detected two process upsets that would have caused consent breaches, enabling diversion to a holding tank before discharge. Annual monitoring cost reduced by 18 percent through consolidation, and Environment Agency satisfaction score improved at the next compliance inspection, avoiding enhanced scrutiny.

    Questions to Ask Shortlisted Providers

    1. 1

      Is your laboratory UKAS-accredited to ISO 17025 for the specific parameters included in our discharge consent, and can you provide a copy of your current UKAS scope?

      Environment Agency consent conditions in England and Wales require that compliance monitoring is conducted by a laboratory with UKAS accreditation for the relevant parameters and methods. A non-accredited result is not legally defensible and will not be accepted by the EA as evidence of compliance. UKAS scopes are specific to parameters and matrices; verify that the scope covers your actual consent parameters.

    2. 2

      What is your turnaround time for routine and emergency analysis, and what is your hold-time and preservation protocol for each parameter?

      Many parameters have strict maximum hold times between collection and analysis (microbial parameters 6 to 24 hours, volatile organics 7 days, BOD 6 hours unfixed). Inadequate preservation or delayed analysis can produce results that under-report contamination (biological degradation) or over-report it (chemical oxidation). Ask to see the laboratory's sample receipt and hold-time management procedures.

    3. 3

      What quality control data do you include in the analytical report, and what is your policy for reporting and flagging out-of-range results?

      ISO 17025 requires laboratories to report method blanks, certified reference standards, duplicate analyses, and recoveries alongside sample results. A report that simply lists numbers without QC data gives no confidence in result accuracy. If a QC check fails (e.g. spike recovery outside 80 to 120 percent), the sample results are potentially invalid and the laboratory should notify you and offer re-analysis.

    4. 4

      For online monitoring instruments, what is the calibration frequency and the method for validating online results against laboratory analysis?

      Online instruments (pH, turbidity, TOC, COD correlations) drift over time and require regular calibration against certified standards. A calibration log and a defined schedule for cross-validation against laboratory analysis (typically monthly) are required to use online data as evidence in operational decisions or in EA reporting. Instruments that have not been validated against laboratory methods have unknown bias and should not be relied upon for compliance decisions.

    5. 5

      Can you provide proficiency testing scheme participation records for the parameters in our monitoring programme?

      UKAS-accredited laboratories must participate in proficiency testing (PT) schemes such as EMQN or Environment Agency CONTEST rounds, where blind samples of known concentration are analysed and results compared against peer laboratories. PT Z-scores within plus or minus 2 indicate satisfactory performance. Request PT records for the last 12 months for your specific parameters; a laboratory with repeated Z-scores outside plus or minus 2 has a systematic analytical problem.

    What Drives Cost in This Category

    Monitoring programme scope and frequency

    A basic trade effluent consent monitoring programme (weekly pH, BOD, SS, COD for one discharge point) costs 5,000 to 15,000 GBP per year in laboratory analysis. Adding Legionella monthly culture for 3 cooling towers adds 8,000 to 15,000 GBP per year. Full Environmental Permit monitoring with quarterly metals, annual priority substances, and continuous online COD and pH monitoring (instrument maintenance and calibration) typically costs 25,000 to 80,000 GBP per year for a mid-sized industrial site.

    UKAS-accredited versus non-accredited analysis

    UKAS-accredited analysis typically costs 15 to 30 percent more than equivalent non-accredited analysis. However, non-accredited results are not accepted for regulatory compliance reporting in the UK, and a permit non-compliance attributed to inadequate analysis methods can result in prosecution costs, remediation requirements, and permit review of indefinite duration, vastly exceeding the cost differential.

    Online monitoring capital and maintenance

    Installing online COD, TOC, and pH monitors on an effluent channel costs 15,000 to 50,000 GBP per instrument point (instrument, housing, flow cell, SCADA integration). Annual maintenance and calibration costs 3,000 to 8,000 GBP per instrument. The business case for online monitoring is typically a combination of early-warning value (avoiding a single permit breach worth 20,000 to 100,000 GBP in surcharges and enforcement costs) and operational optimisation (reducing chemical dosing cost).

    Non-compliance costs and enforcement action

    An Environment Agency enforcement notice following permit non-compliance requires submission of a remediation plan, independent audit, and enhanced monitoring at increased frequency for 6 to 12 months. Total cost (legal, audit, additional monitoring, EA officer time at hourly rate) typically runs 30,000 to 120,000 GBP for a first-time non-compliance. A prosecution for repeated non-compliance can result in fines of 100,000 to 1,000,000 GBP plus remediation orders.

    Key Regulations & Standards

    ISO 17025:2017 -- Laboratory Competence and UKAS Accreditation

    ISO/IEC 17025:2017 is the international standard for the competence of testing and calibration laboratories. UKAS (United Kingdom Accreditation Service) accredits UK laboratories to ISO 17025. Environment Agency permit conditions for monitoring of trade effluent and environmental permit compliance require analysis by a UKAS-accredited laboratory using approved methods (typically BS EN ISO series methods). UKAS accreditation scope specifies the exact parameters, matrices, and methods covered; laboratories must be accredited for the specific combination relevant to each consent.

    ISO 5667 Series -- Water Sampling Protocols

    ISO 5667 is the definitive international series for water sampling. Key parts: ISO 5667-1 (general sampling programme guidance), ISO 5667-3 (preservation and handling), ISO 5667-10 (industrial and process water sampling), and ISO 5667-14 (quality assurance for environmental water sampling). UK Environment Agency technical guidance references ISO 5667 for sampling protocol requirements. Non-compliance with ISO 5667 hold times or preservation requirements renders sample results inadmissible for permit compliance purposes.

    Water Industry Act 1991 -- Trade Effluent Monitoring and Reporting

    Trade effluent consent conditions issued under WIA 1991 Section 118 specify monitoring parameters, frequency, analytical methods, and reporting requirements. Self-monitoring data must be submitted to the sewerage undertaker at specified intervals (typically monthly). Falsification of monitoring data is an offence under the Fraud Act 2006 in addition to the WIA 1991 offence. Water companies have the right of inspection and may require a metered flow totaliser to verify reported discharge volumes.

    Environment Agency Technical Guidance -- Compliance Classification Scheme

    The Environment Agency's Compliance Classification Scheme (CCS) grades Industrial sites' compliance performance by frequency and severity of non-compliances. Sites graded Red (significant non-compliance) face enhanced regulatory scrutiny, more frequent inspections, and potential permit review or revocation. Yellow (low-level non-compliance) sites may face improvement plans. Green sites maintain standard regulatory oversight. A strong monitoring and reporting programme is the primary mechanism for maintaining Green status and demonstrating due diligence.