Stormwater & Urban Water
First-Flush Diverter Companies
First-flush diverter suppliers protecting downstream rainwater storage and treatment from initial pollutant load.
This page is a good fit if you need:
- Coagulation/Flocculation or Filtration capabilities
- Suppliers with contractors sector experience
- Providers operating in United Kingdom or Netherlands
Not ready to browse? Post your first-flush diverter project and receive matched proposals directly from verified suppliers.
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- Countries
- 2
How to choose a first-flush diverter provider
Start with providers that clearly operate in your target geography and project footprint.
Look for industry exposure that matches your water challenge, compliance constraints, and deployment context.
Use technologies, service scope, and proof signals to narrow the list before reaching out to suppliers.
Not sure where to start? Our experts can help.
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8 results from 8 matched providers

Biocompact
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.

Bollfilter UK Limited
Bollfilter UK is a team of highly motivated, positive and professional people with extensive knowledge and experience of the filtration industry. Here are some recent testimonials. As the dedicated technical sales arm of Boll & Kirch – Europe’s leading manufacturer of automatic water filters – Bollfilter UK provides complete filtration solutions and expertise through the supply of quality equipment, servicing, spares and support. Boll automatic filters are widely used by the UK water treatment industry thanks to their reliability, performance and durability. Featuring unique backflushing technology, they are provide low maintenance filter protection for tertiary waste water systems and primary potable water treatment plant and are ideal for unmanned sites. For potable water applications, Boll automatic filters can protect water treatment plant, such as membrane, UV disinfection, DAF recycling and ion exchange systems with a typical filtration level of 10-500 microns. For waste water treatment, Boll automatic filters can screen final effluent down to 50 microns for intermediate wash water equipment, such as screens, belt thickeners, filter presses and centrifuges. They can also protect NSAF and sand filters and be used with disc filters to prevent spray nozzles from blocking. For final effluent washwater booster pump protection, where overall pressure in the system is low but high pressure washwater is available, a Boll automatic filter fitted to the washwater feed will remove particulates to ensure efficient performance of pumps and keep downstream nozzles free from blocking. Where automatic filtration is not required, i.e. on cleaner systems or for very coarse filtration, Boll & Kirch also offer a range of simplex and duplex manual strainers. Bollfilter UK is dedicated to meeting and exceeding customer’s expectations from the first point of contact to the selection and supply of equipment, commissioning, after-sales support, spare parts advice recommendation and timely supply, on-site service/maintenance and training, and work for continual improvement through training and development. See some of our Case Studies: Automatic river water filtration for protection of the turbine cooling system National Oceanography Centre, Southampton Offshore wind parks: Filtration for Cooling of the Converter Platform BorWin Beta Chalton WRC Tertiary Treatment Plant for Ammonia & Solids Reduction HVAC: Art Gallery Liquid to Air Cooling & Heating System Roetgen Germany Potable Water Membrane Protection Pressured Far Baulker Potable Water Nitrate Reduction Plant (Ion Exchange) Keldgate Potable Water Membrane Protection Pressured Banwell Potable Water Membrane Protection Submerged Grimsbury Potable Water Nitrate Reduction Plant (Ion Exchange) Lound Potable Water DAF Saturator Protection Vines Cross Final Effluent Wash water Filtration Pump Protection Beckton Final Effluent Wash water Filtration Pump Protection Cranleigh Effluent Nitrifying Submerged Aerated Filter Protection Marchwood Power Station Cooling Water Salzbach-Salzberg Power Station Cooling Water Glendoe Power Station Cooling Water Reuter-Berlin Protection of Water Cooling System

Bramley Engineering (Lifting Gear) Ltd
Bramley Engineering ltd was established in Ivinghoe in 1981 by John & Davina Bramley following John’s apprenticeship and early career in South Africa. Now based in Leighton Buzzard and run since 2007 by Graham and Emma Bramley the company remains a family run business encompassing a hardworking, fun, and fair working ethos that benefits our customers, suppliers, and staff. Over the last 40 years the company has evolved to ensure it meets health and safety requirements, is up to date with legislation and has safe working practices. We became ISO registered in 2004 following a large project for the nuclear power sector, we have continued to develop our systems as demands and in-house practices have required it. Bramley Engineering manufactures many forms of lifting equipment including overhead cranes, gantries, monorails, jib cranes and davits. We specialise in bespoke lifting solutions and have over the years provided solutions for many varied situations. Using the latest in CAD technology Graham continues to improve and adapt his knowledge to the needs of the customer. Our customers are many and varied and include the water industry for whom we have been working for twenty-five years, construction companies both large and small and the rail sector. In 2018 we won a contract to provide a grid system of 18 cranes in Lincoln for Siemens rail, this project saw us win our first award for ‘working as one’ with the customer. This award was greatly appreciated as not only did it show the customers appreciation it reminded us that our working practices and ethos are in line with ‘lifting your expectations’. We are members of the Lifting Equipment Engineers Association (LEEA) whose knowledge and expertise are always on hand should we require assistance. They audit us annually and ensure we are up to date with latest legislation and that our working practices meet the needs of our customers. As well as the cranes and lifting solutions we provide LOLER examinations and sell all ‘below the hook’ lifting accessories. We have an online system that keeps records of all the equipment we have examined. Our customers can always have access to their certificates ensuring they are compliant with health and safety requirements. We hold stock of web and round slings, shackles and chain slings and welcome customers to visit our premises to discuss their needs. Bramley Engineering always welcome new and exciting challenges with both existing and new customers. We relish the chance to expand our bespoke lifting portfolio and to use our extensive knowledge and innovative outlook to help others find their perfect lifting solution. We are always striving to lift expectations.

Eliquo Hydrok Ltd
ELIQUO HYDROK works with all major UK and Ireland water companies, providing practical water engineering solutions. As a specialist engineering firm with head office in Indian Queens, ELIQUO HYDROK operates at the forefront of innovative and sustainable water treatment technologies. We support the entire UK water sector, supplying every water company. Part of ELIQUO WATER GROUP, the extensive portfolio includes solutions for wastewater management, wastewater treatment, clean water treatment and surface water management; Mecana PCMF, aeration technologies, CSO screens, flow controls, storm tank flushing and Raw Water Intake Screens. Plus, a sludge treatment portfolio that helps reduce costs, improve efficiency, and meet environmental compliance requirements – through systems like ELOVAC® for vacuum degassing, and other integrated technologies in biogas, digestion, dewatering and drying. With established teams in Cornwall, Wolverhampton and Wombwell, ELIQUO HYDROK are well-equipped to support operations – from start to finish; with design, manufacture, management and install capabilities – across the UK and Ireland. This wealth of in-house expertise is backed by a forward-thinking mindset to help customers achieve their long-term goals sustainably; to deliver results in AMP 8 and beyond.

Industrial Pipework Services
At Industrial Pipework Services, we provide bespoke engineering services. With over 25 years’ experience IPS can offer complete mechanical engineering solutions including design, manufacture & installation services. Our experienced workforce are trained to the highest standards. IPS is situated within easy access to the M4 corridor approximately 30 minutes North of Cardiff. The company embraces innovative thinking while utilising the latest technology. IPS operating base comprises of 30,000 square foot of workshops, offices and assembly areas. The Workshops are fully segregated for the manufacture of both carbon steel and stainless-steel products and are serviced by dedicated overhead gantry cranes. With over two decades of engineering experience the company strives to combine first class engineering and design to deliver the high quality that is required. The Company maintains a proactive approach, working closely with our Clients to achieve our collective aims for each scheme. This ambition is underpinned by an uncompromising commitment to attain the highest standards of health, safety and environmental care. IPS provides continued excellence in design, manufacturing and installation gained from many years experience within the industry. Our In-House design capability allows the company to provide a full engineering design service using the latest Auto CAD software packages. IPS offers a design service for both pipework and steelwork systems from proposal drawings to the production of as built drawings. IPS Design Office provides all relevant AutoCAD drawings for steelwork and pipework, Isometric drawings for fabrication, general layout drawings for plant and equipment and As Built drawings. Structural steelwork calculations and flow characteristics are also provided as required. IPS offer a full 3D surveying services and production of cloud point data for project modelling. IPS operates primarily within the Water Industry and provides services for both clean water and sewage. IPS is a Tier One Mechanical Engineering Specialists Provider to Dŵr Cymru Welsh Water and the Strategic Alliance. IPS operate nationally and have delivered projects throughout the UK for many Water Utility companies including Anglian Water, Thames Water and Bristol Water. Continual improvement into our infrastructure and the development of new IT systems has brought us to a level consistent with the requirements of our clients. IPS offers a complete project management service, including operation of Principal Contractor role as well as delivering turnkey projects. Experience gained in the water industry has enabled us to manage the competing demands of cost, quality and safety for all our projects.

JN Bentley Ltd
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.

Saint Gobain PAM UK
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

Technocover Ltd
Technocover is an approved ISO 14001:2004 Environmental and ISO 9001:2008 Quality Accredited Company, dedicated to the Design, Manufacture, Installation and Maintenance of Physical Security Access Solutions for protection to all industrial sectors. Our extensive in-house design and manufacturing facilities are home to well established research and development unit and comprehensive testing facility. Our commercial offices incorporate our design team who utilise the latest computer aided design technology and work alongside our dedicated planning section who oversee everything from surveying, scheduling and contract reviews, to the management of framework agreements. We have been designing and manufacturing innovative steel products since 1993. In that time, through organic growth, planned expansion and acquisition, we have gained a reputation as the UK’s leading supplier of Physical Steel Security Access Products. We have a range of aperture security solutions for virtually every application, establishments in the UK and overseas have sought our expertise in providing security products for asset protection. We operate a Total Service Philosophy and can handle complete projects from site survey to final installation, whether for new or refurbishing projects, the adaptability of our galvanised steel access products means the most complex design criteria can be met. Our range of high quality access products offer custom built operational and security solutions to prevent unauthorised persons gaining access, securing key assets against all levels of trespass, malicious vandalism, theft, extortion, contamination or terrorism. Many of our access system products have been tested and approved by the Loss Prevention Certification Board (LPCB) to LPS 1175 issue 5 or above, Security Rating Levels 2, 3, 4 or 5. Frameworks We hold both exclusive and shared framework agreements with most of the major UK water companies. Framework Security items include: LPCB Level 2 Universal Gas Cylinder Clamps LPCB Level 3 Mesh Cage Systems LPCB Level 3 Flush Access Covers LPCB Level 4 Upstand Access Covers LPCB Level 4 Padlockable Access Doors LPCB Level 4 Key Entry Doors LPCB Level 4 Enclosures/Kiosks/Cabinets LPCB Level 4 Walk-In Modular Buildings LPCB Level 4 Window Bar Sets LPCB Level 5 Louvres
What to Know Before Hiring a First-Flush Diverter Provider
First-Flush Diverter Companies serve a wide range of sectors including industrial manufacturing, municipal utilities, energy production, food & beverage, and mining. Whether your project requires a full turnkey system or targeted engineering services such as design, commissioning, or ongoing operations, selecting the right provider early reduces project risk and long-term operating costs.
When evaluating first-flush diverter companies, look beyond the company listing. Ask for case studies from projects in your specific industry vertical and verify technology certifications, compliance track record, and post-installation support capabilities. Providers with regional presence typically offer faster mobilization and stronger long-term service agreements.
Aguato's directory gives you a structured starting point: filter by geography, technology, and industry experience to shortlist the most relevant first-flush diverter companies. Review each profile's proof assets—certifications, datasheets, and project references—before reaching out. If you're ready to move forward, post your project on Aguato to receive structured proposals from pre-qualified suppliers matched to your requirements.
Frequently Asked Questions
How do I shortlist first-flush diverter companies for my project?
Start by filtering providers by geography and industry to match your project footprint. Then review technology coverage and proof assets—certifications, case studies, and datasheets—before contacting your shortlist. Providers with relevant industry experience and local references tend to deliver the most accurate proposals.
What questions should I ask a first-flush diverter provider before signing?
Ask about experience with projects of similar scale and complexity in your industry, their technology certifications, O&M support terms, and mobilization timelines. Request references from comparable projects and clarify whether they handle procurement, installation, and commissioning in-house or via subcontractors.
What should I compare across first-flush diverter companies profiles?
Compare service scope, technologies deployed, regions served, and visible proof assets such as certificates, datasheets, and case studies. These signals separate providers with real delivery history from generic directory listings. Also check company size and whether the profile has been claimed and verified.
How does posting a project on Aguato help me find the right first-flush diverter provider?
When you post a project on Aguato, our matching engine surfaces providers whose capabilities, geography, and industry experience align with your requirements. You receive structured proposals you can compare side by side, which is faster than sourcing providers individually and reduces the risk of misaligned proposals.