Epoxy, polyurea, rubber, and glass-flake coating applicators extending the life of steel and concrete water assets.

    Find a Tank Coating & Lining Provider

    Matched providers: 17

    Top countries: United Kingdom, Indonesia

    Popular technologies: Acid Dosing Systems, Aerated Lagoons, MABR

    Tank Coating and Lining Systems: Epoxy, Rubber, and Glass-Fused Steel for Water Storage

    Internal coatings and linings protect water storage tanks and vessels from corrosion, provide hygienic food-grade surfaces, and extend service life by isolating the tank material from stored water or process fluid. System selection depends on the substrate (carbon steel, concrete, GRP), the stored fluid (potable water, wastewater, chemicals, hydrocarbons), operating conditions (temperature, pressure, cyclic loading), and the required service life. For potable water: all internal coating materials must meet DWI (Drinking Water Inspectorate) Regulation 31 approval (England/Wales), WRAS approval, and in Scotland, WATS (Water Authority Technical Specification). These approvals require materials to be tested per BS 6920 (extraction testing at 20 degrees C, 50 degrees C, and 70 degrees C) to confirm they do not leach substances affecting water taste, odour, or health at the concentrations leached. Key coating system types: fusion-bonded epoxy (FBE, electrostatic spray, 250 to 400 micron DFT); liquid-applied epoxy (2-component, 200 to 500 micron DFT, multiple coats); glass-fused-to-steel (GFS, vitreous enamel fused at 820 to 840 degrees C, 0.25 to 0.40 mm fused glass layer); cementitious mortar lining (sprayed or hand-applied, 10 to 20 mm, used for larger diameter steel pipelines and tanks).

    Glass-fused-to-steel (GFS) technology is widely used for bolted steel water tanks (potable storage, wastewater, biogas digesters). GFS process: steel panels (typically 3 to 5 mm S275/S355) are hot-dipped in frit (crushed glass mixed with clay and metal oxides), fired at 820 to 840 degrees C, fusing a 0.25 to 0.40 mm glassy enamel layer onto both surfaces; the glass layer is inert, hygienic, chemically resistant (pH 3 to 10 indefinitely), and eliminates the need for periodic repainting. Standard: ISO 28765 (Vitreous and porcelain enamels - design and manufacture of plant used in corrosive conditions); US NSF 61 (Drinking Water System Components); AWWA D103 (Factory-Coated Bolted Carbon Steel Tanks for Water Storage). GFS bolted tanks (Tank Connection, ZCL Composites, CST Industries, DN Tanks): panels shipped flat and bolted on-site with EPDM or butyl joint sealant; available 50 to 25,000,000 L; rapid installation (1,000 m3 tank erected in 1 to 2 days vs 3 to 6 months for site-welded tanks); panels replaceable without full tank replacement if localised damage. Service life: 20 to 30 years typical for GFS coated panels in potable water service; external coating (polyurethane or epoxy) protects the external enamel surface.

    Rehabilitation and recoating of existing water tanks: the UK water industry undertakes extensive tank rehabilitation programmes due to ageing Victorian and mid-20th century reinforced concrete and steel reservoirs. Concrete reservoir rehabilitation: crack injection (epoxy or cementitious grout); surface scarification and cleaning (high-pressure water jetting at 200 to 700 bar); cement-based coating (micro-silica modified polymer cement, 3 to 6 mm DFT - BASF MasterProtect, Sika Watertight concrete systems, Kryton International KIM admixtures); or polyurea spray lining (Huntsman, Novacoat, BASF, 1.5 to 3 mm DFT, rapid cure). Steel tank recoating: abrasive blast cleaning to Sa 2.5 (ISO 8501-1) minimum; primer and intermediate coats of solvent-free epoxy; topcoat 350 to 500 micron total DFT; inspection by certified inspector (NACE CIP Level 2 or FROSIO III) using DFT gauge (per ISO 2808), holiday detection (DC spark test at 5 to 10 V per micron DFT), and adhesion pull-off test (minimum 3 MPa per ISO 4624). PSSR 2000 and BS 6920 compliance maintained through in-service inspection and recoating before coating failure allows substrate corrosion.

    Frequently Asked Questions

    What coating is used inside a potable water tank?

    Potable water tank coatings must hold DWI Regulation 31 (England/Wales) or WRAS approval, certifying compliance with BS 6920 extraction testing. Approved coating types: (1) Solvent-free epoxy (most common for steel tanks): 2-component epoxy, 300 to 500 micron DFT applied in 2 to 3 coats; DWI-approved products: Jotun Jotatemp, Hempel HEMPADUR, Sherwin-Williams Sher-Glass; requires abrasive blast cleaning to Sa 2.5 before application; recoating interval typically 10 to 20 years; (2) Glass-fused-to-steel (GFS/vitreous enamel): factory applied, DWI/NSF 61 approved; no site-applied coating required; preferred for bolted panel tanks; (3) Fusion-bonded epoxy (FBE): factory-applied for pipes and small vessels; thinner (250 to 400 micron) but very uniform; (4) Cementitious mortar: for concrete tanks and large-diameter concrete-lined steel mains; minimum 10 mm thickness; approved by WRAS; very long service life (30 to 50 years); (5) Polyurea spray: rapid-cure 1.5 to 3 mm membrane; increasing use in concrete reservoir rehabilitation; DWI approval for specific products (confirm before specification). Prohibited: lead-based coatings, coal tar epoxy (prohibited in potable water service per DWI circular 1984), and any coating not holding current BS 6920/WRAS/DWI approval.

    How often do water tank coatings need to be replaced?

    Service life of water tank coatings depends on coating type, substrate preparation quality, and operating conditions: Solvent-free epoxy (steel tank): 10 to 20 years with good initial surface preparation (Sa 2.5 blast) and correct DFT (300 to 500 micron); coastal or chloride-rich water environments: 8 to 15 years. Glass-fused-to-steel: 20 to 30 years for factory-applied panels in potable water; touch-up of damaged areas (chips from installation) required at 5 to 10 years; full panel replacement at 25 to 35 years. Cementitious mortar (concrete tank): 20 to 40 years for well-applied mortar on sound substrate; dependent on concrete base condition (crack-free and structurally sound). Polyurea: 15 to 25 years claimed; less in-service data than epoxy. Assessment: annual inspection should include visual check for delamination, cracks, blistering; DFT measurement; holiday (pinhole) detection. Recoating threshold: typically when DFT has reduced to less than 50 percent of original or when holidays exceed 1 per m2. UK practice: Ofwat performance commitments track reservoir out-of-service risk; water companies maintain asset data on coating condition and schedule rehabilitation 3 to 5 years ahead of predicted failure to avoid unplanned service interruption.

    What is the process for lining a concrete water reservoir?

    Concrete reservoir rehabilitation lining process: (1) Inspection and survey: structural survey (CCTV, crack mapping, carbonation depth test with phenolphthalein indicator - pink is alkaline, colourless is carbonated/depassivated); water tightness test; ground investigation if external groundwater present; (2) Dewatering and cleaning: isolate, dewater (portable submersible pumps); clean with high-pressure water jetting 200 to 700 bar to remove biofilm, loose concrete, and surface contamination; (3) Structural repair: crack injection (epoxy for structural cracks; polyurethane foam for active leaking cracks); concrete patch repair with polymer-modified mortar (BASF MasterEmaco, Sika MonoTop); (4) Surface preparation: blast clean or vacuum diamond grind concrete surface to reveal aggregate; minimum 7 to 10 MPa surface tensile strength (pull-off test per ASTM D4541); surface should be saturated surface-dry (SSD) for cementitious coatings or bone-dry for polyurea; (5) Coating application: primer (where specified); base coat; finish coat; DFT measured per ISO 2808; holiday detection; (6) Cure and testing: cure per manufacturer's data sheet (typically 7 to 28 days for cementitious; 24 to 72 hours for polyurea); water soak test and bacteriological sampling before return to service. Typical project duration: 4 to 16 weeks depending on reservoir size and scope; typically scheduled during planned maintenance outage.

    What is glass-fused-to-steel (GFS) lining and where is it used?

    Glass-fused-to-steel (GFS), also called vitreous enamel or porcelain enamel on steel, is a permanent factory-applied coating where glass frit (powdered glass with metal oxide pigments and adhesion agents) is sprayed or dipped onto steel panels and fired in a furnace at 820 to 840 degrees C; the glass melts, bonds chemically to the steel surface (through an iron-boron bond layer), and solidifies into a smooth, impermeable 0.25 to 0.40 mm glass coating. Properties: pH resistance 1 to 10 (no degradation); inert to potable water, wastewater, biogas, hydrocarbons; smooth surface (Ra less than 1 micron) inhibits biofilm adhesion; UV and weather resistant on external surfaces. Applications: potable water storage tanks (bolted panel type, common in UK, US, Australia); wastewater storage and equalization tanks; anaerobic digester covers and walls (resistant to H2S at greater than 3,000 ppm); industrial chemical storage. Standards: ISO 28765 (vitreous enamel plant); US NSF/ANSI 61 (drinking water components); AWWA D103 (bolted steel tanks, internally GFS-lined). Leading manufacturers: Tank Connection (US), CST Industries (Aquastore tanks), ZCL Composites, DN Tanks (with GFS option), Permastore (UK/international). Advantages over site-applied coatings: factory quality control; no on-site coating (no weather dependency); panels individually tested; damaged panels replaceable without full relining.

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    Tank Coating & Lining Companies

    Epoxy, polyurea, rubber, and glass-flake coating applicators extending the life of steel and concrete water assets.

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    Find a Tank Coating & Lining Provider

    Showing 1-17 of 17

    17 results from 17 matched providers

    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
    PNR ITALIA Srl logo

    PNR ITALIA Srl

    Verified
    Italy51-200 employees
    Spray Evaporator · Self-cleaning Screen Filters
    apac · europe · latam +2 more
    19 case studies

    We produce a comprehensive range of spraying solutions, encompassing everything from small-scale nozzles to large industrial spraying systems. Our diverse product line includes various types of nozzles tailored to meet the specific requirements of every application and customer need. The company was established in Milan in November 1968, focusing on distributing parts and components for fire protection systems. Over time, we expanded our offerings to include a diverse range of industrial sprayers tailored to various applications. In addition to our distribution and manufacturing of fire protection system components and industrial sprayers, we specialize in designing and producing pneumatic spray nozzles for industrial use and tank washing nozzles. Our product line also encompasses a variety of complementary accessories essential for industrial washing, including filters, spray guns, and hoses. Furthermore, we offer ejectors, blower nozzles, swivel joints, and hose clamps to provide comprehensive solutions for our customers' needs. PNR Italia is part of the Tecomec Group and oversees four other affiliated companies to form PNR Company, a consolidated reality with a significant presence on the market.

    Microfiltration (MF) Systems
    Disinfection Technologies
    Disinfection Chemicals
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    agriculture
    manufacturing
    Haigh Environmental Company Ltd (Part of the Haigh Group Ltd) logo

    Haigh Environmental Company Ltd (Part of the Haigh Group Ltd)

    United Kingdom

    Suppliers of FujiClean Sewage Treatment Systems & Manufacturers of Inlet Screeners Haigh Environmental is part of the Haigh Group Ltd, an established provider of specialist water and waste services in the UK, employing around 120 people. Providing next-generation water treatment solutions that protect our waterways for future generations is at the heart of our business. Driven by impact, not profit, we pride ourselves on our open-minded, transparent approach, taking a long-term view on the right solutions for our clients and local communities. We supply a range of screens and package water treatment plants, including the pioneering FujiClean system – with excellent results across all relevant metrics. Simplicity is at the heart of our value proposition. As a response to increased environmental permit requirements, complex solutions have emerged across the water industry in a piecemeal fashion, often leading to non-standardised, expensive and over-engineered systems. Working together with utility companies, contractors and communities, we are leveraging the expertise of our experienced team to offer practical, cost-effective and standardised alternatives to septic tanks and conventional chemical dosing treatment options.

    Designers
    Accreditations
    AJ Engineering & Construction Services Ltd logo

    AJ Engineering & Construction Services Ltd

    United Kingdom

    AJ Engineering & Construction Services Ltd provide a wide spectrum of engineering services ranging from steel fabrication and CNC machining to cladding and civil engineering, with our highly experienced team we provide on-time, on-budget quality solutions. From our bases in Forres and Fort William, and a team accustomed to travel we can meet our client’s needs wherever required. Having worked on various water and wastewater treatment projects for the past 25 years we have developed a great working relationship with water companies across the UK. Our in-house capabilities allow us to offer a turnkey service to our clients from reactive maintenance and manufacturing to planned infrastructure and non-infrastructure projects. Many of the projects we undertake in the water sector are within water treatment and wastewater treatment plants where cleanliness is paramount, all our water sector site teams hold certification and Water Hygiene cards. Our range of services collated into one means that we can take on multiple discipline contracts and deliver them as one which provides our clients with a number of advantages. It removes the need to have multiple contractors on site at once. Benefits in cost savings passed down on procuring large amounts of steel for a side wide project. Little risk of dimensional discrepancies between contractors We work alongside framework delivery partners throughout the UK providing the services below; Steel portal frame buildings (design, fabrication, erection & cladding) Design, manufacture and installation of pipe bridges Design, manufacture and installation of site wide access metalwork (walkways, access stairs, ladders etc) Design, manufacture and installation of modular water buildings transportable by road. Design of various process tanks, pipework and pumps. Fabrication of tanks and pipework (stainless and carbon) Mechanical Installation Modular Treatment Buildings and Mechanical Fit-out SR2 rated steel enclosures (quicker than GRP Kiosks) We appreciate how important quality and cleanliness is in the water sector and we are proud that we have completely segregated facilities for stainless steel and carbon steel. In addition to this we are also approved under the regulations 31(4)(A) of the water supply regulations 2016 to supply stainless steel and pipework fabrications to the drinking water sector.

    Networks - Sewerage
    Asset Maintenance & Rehabilitation
    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
    Greenbank Group logo

    Greenbank Group

    United Kingdom

    A specialist engineering company with a global customer base. Greenbank provides a wide range of products and services to companies operating across a number of industries and is now establishing itself in the clean and wastewater sector. For many years the company has utilised the unique properties of volcanic basalt for lining products used in heavy industries such as power generation and minerals extraction. In partnership with Czech firm Eutit, the company has also been pioneering the use of basalt in the renovation and restoration of sewer systems in central European following a series of successful projects in Prague. As a result of devastating floods, the city’s sewer system was extensively rebuilt and upgraded with basalt being used in a number of key locations to provide a new level of security to the system. More than a decade on, the new system continues to perform well and has set a standard that’s now been followed in other European cities. Well suited for the most demanding of applications, thanks to the partnership between Greenbank and Eutit, a wide range of basalt solutions are now available in the UK market. These include products and systems that bring a wide range of benefits to the industry, including: Basalt tiles that can also be used to line existing brickwork, a more cost-effective solution than full replacement, and their reduced drag co-efficient means improved flow – in effect a smaller-diameter pipe or tunnel lined with basalt can carry a higher volume of water than a larger one with traditional brick surfaces. The effective life expectancy of basalt-lined sewer systems is between 100 and 200 years, thanks to their excellent resistance to abrasion and chemical damage – as well as the rigours of high-pressure water jetting that’s often used to clear unwanted blockages. For larger round or ovoid systems, basalt can be used in the lower sections to deal with the wear and tear with concrete upper sections to provide optimum life performance. Alternatively, steel pipes lined with basalt can be produced up to 3000mm diameter producing a lighter therefore lower cost installation option to thick wall concrete. Ease of installation and reduced maintenance costs make basalt ideal for bottom gutters, branch pipes and tubes and slip-resistant elements for walkways, and Greenbank can also supply bespoke-shaped tiles to meet the unique requirements of individual clients. With manufacturing facilities in Derbyshire and Nottinghamshire, supported by the additional capacity and expertise provided by the latest addition to the group, Franklyn Yates Engineering, Greenbank is well placed to react quickly and efficiently to the needs of new and existing clients.

    Aqua Safety Showers International Ltd logo

    Aqua Safety Showers International Ltd

    United Kingdom

    Aqua Safety Showers International Ltd is one of the leading UK manufacturers of emergency safety showers and eyebaths for the UK water companies. Self-contained tank showers (tepid water), frost protected mains fed showers, portable and mobile showers. Self-contained eyebaths (tepid water), frost protected eyebaths and mains fed eyebaths. Wash down retractable hose reels with optional heavy duty heated cabinet.

    Health & Safety
    JK Fabrications Ltd logo

    JK Fabrications Ltd

    United Kingdom

    With over 30 years of experience delivering expertise in the industry, JK Fabrications Ltd has become one of the front runners and will keep challenging ourselves and others to improve our Environment as we believe that; Our Environment, is our Future. At JK Fabrications, we are an engineering company that takes pride in our family roots, with an aim to continue to successfully grow our business. Our company values are incorporated into everything we carry out and we seek to work with like-minded companies. Established in 1998, JK Fabrications specialises in efficent, effective, and environmentally sensitive solutions to the Water Treatment, Waste Water, Waste to Energy, and Pharmaceuticals Industry. With over 30 years of experience delivering expertise in the industry, JK Fabrications has become one of the front runners and will keep challenging ourselves and others to improve our Environment as we believe that ‘Our Environment, is our Future’. With the ease of access to Northern Ireland’s principal motorway network and equal distance between both Belfast Airports and Dublin Airport, JK Fabrications’ 50,000 Sq/ft premises in Newry are the perfect location to produce and deliver your project. Design We have a fully equipped in-house design team with over 65 years of combined technical, manufacturing, and sector-specific experience, that are highly skilled and trained using the very latest design software. Manufacture We have built our reputation by producing specialised products for the waste-to-energy, wastewater, water treatment, and pharmaceutical industries. Our experienced welders and fabricators along with our state-of-the-art machinery make sure that each project is carried out to a high standard. Install We have an experienced installation team with a dedicated core team of engineers, mechanical fitters, and coded welders who have over 30 years of experience in the supply and installation of our fabricated products for a wide range of projects throughout the UK and Ireland. Commission Our experienced commissioning engineers will attend the site to oversee the installation of systems, plants, and equipment. They will commission, test, and optimise the equipment as well as provide the operators with operation and maintenance manuals. Products include: Stainless Steel Pipework | Stainless Steel Vessels (inc Pressure Vessels) | Mild Steel Pipework | Lamellas | Picket Fence Thickeners | Rectangular Bridge Scrapers | Half Bridge Scrapers | Conical Settlement Tanks

    Pipeline & Pipework Products
    Accreditations
    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
    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
    Eliquo Hydrok Ltd logo

    Eliquo Hydrok Ltd

    United Kingdom

    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.

    Treatment Works Products/Services
    Asset Maintenance & Rehabilitation
    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
    Cadman Cranes Ltd logo

    Cadman Cranes Ltd

    United Kingdom

    Cadman Cranes is a leading provider of lifting solutions in the UK with over 50 years’ experience and a reputation for quality, reliability and safety. At the very forefront of sustainability within the industry, Cadman Cranes offer responsible and collaborative turn-key solutions across all industries. From depots in Colchester and Brentwood, Cadman is ideally positioned to cover the East of England and beyond, living and breathing its mission to provide safe lifting solutions to industry and communities in a collaborate, considerate and sustainable way. Cadman has always placed great importance on delivering so much more than just crane hire. Its values are focussed on the success of its clients, its people and its community, and it takes great pride in going the extra mile on every job, no matter how big or small. Cadman Cranes add value to your hard work and offer a full-service lifting solution that goes far beyond just crane hire. It doesn’t just look for customers, it looks for partnerships based on trust, quality and safety. Services include: Contract lift services: Our complete package service is ideal for those who require a fully managed lifting solution, removing your risk and liability, and ensuring that we deal with all of the ‘heavy lifting’. Crane hire services: Cadman Cranes is the leading crane rental company in the East of England, providing crane hire across London, Essex, East Anglia, and all over the UK. With cranes available 24/7, 365 days a year, we are well positioned to keep your operations moving. Tank clearance, dredging, and grab solutions: Cadman Cranes offers innovative tank clearance solutions with our custom-designed grab attachment. The remote-controlled grab, mounted to the hooks of our mobile cranes, can reach up to 60 meters and handle a variety of materials, including sewage waste, sludge, grit, mud, and sand. This service is ideal for wastewater treatment plants, sewage facilities, digester tanks, aeration tanks, ports, and any industrial sites that require regular tank cleaning, maintenance, or dredging. Specialist lifting equipment for utility installation projects: Utilising our range of specialist lifting equipment, we have assisted on some of the most complex utility installation projects throughout the East of England, solving problems currently unimaginable by other mobile crane hire companies. Our innovative Compact Crawler Cranes, in combination with our remote-controlled telescopic hydraulic grab, have proved invaluable in providing the highest level of service and crane hire to the utilities sector. If you would like to work with Cadman Cranes or are looking to add a safe and considerate crane hire solution to your list of approved suppliers, Cadman would love to hear from you.

    Asset Maintenance & Rehabilitation
    Concrete Repairs Ltd logo

    Concrete Repairs Ltd

    United Kingdom

    Concrete Repairs Limited (CRL) is a specialist asset maintenance contractor who is here to help you with the inspection, repair & refurbishment of your concrete water assets. CRL provide comprehensive repair and refurbishment services tailored to the needs of the water and wastewater sector throughout the UK. These include the inspection, repair, refurbishment and upgrading of service reservoirs, contact tanks, water towers & wastewater treatment plants. With over 65 years of experience, CRL understands the importance of maintaining water quality and supply to customers. Therefore, when planning repairs, we prioritise effective programming of the work and optimal utilization of the assets being repaired. Our choice of repair methodologies and materials always reflects this commitment. At CRL, we pride ourselves on being a reliable partner to the water companies. We collaborate closely with them to identify problems early, quantify the necessary repairs, and establish a timeline for refurbishment. Throughout this process, we focus on ensuring the longevity and optimal performance of the assets. CRL provide proven and successful cost-effective repair and refurbishment options which meet our clients’ objectives of upgrading and increasing the life of their structures. CRL is capable of undertaking individual projects of up to £20M, either under competitive tender, or through Partnering/Framework arrangements. Our broad experience across various sectors ensures we deliver efficient, robust, and technically advanced services.

    Asset Maintenance & Rehabilitation
    Sewer Inspections
    Hayes GFS Ltd logo

    Hayes GFS Ltd

    United Kingdom

    Hayes GFS Ltd are recognised throughout the water industry as experts in the supply, installation and refurbishment of glass-fused-to-steel tanks, epoxy coated tanks and stainless steel tanks, from anaerobic digesters to potable water storage solutions to Nerada tanks. Our experience as framework suppliers to many UK water companies and having worked on projects throughout the Europe, America and the Middle East, has given us an unprecedented insight into the needs and demands of a variety of distinguished clients. Services include: The supply and installation of Permastore glass-fused-to-steel tanks and silos, fusion bonded epoxy, stainless steel tanks and GRP roofs. On-site tank surveys and condition reports. Emergency repairs. Refurbishment and replacement of existing tanks and roofs. Design, manufacture, supply and retrospective fitting of all tank related ancillaries, including access steelwork, decant pipework, tank Insulation and cladding.

    Project Planning & Surveying
    Asset Maintenance & Rehabilitation
    FLI Precast Solutions logo

    FLI Precast Solutions

    United Kingdom

    FLI Precast Solutions (formerly FLI Carlow) provide design, engineering and manufacturing services for the off-site manufacture of specialist concrete infrastructure and attenuation systems. Our markets include Water, Wastewater, Energy and Storm Attenuation in the UK & Ireland and bespoke projects globally. SERVICES INCLUDE Design, engineering and manufacturing services for the off-site manufacture of specialist concrete infrastructure and attenuation systems. Design to national and international water industry standards and our semi-precast modular designs make us the industry leader in off-site concrete engineering and manufacture. By early involvement and integrating with our clients’ design teams we can accelerate and improve design optimisation and reduce cost. The value is in the solution, and off-site manufacturing and fabrication leads to higher efficiencies and lower risks and costs. Framework agreements enable us to add more value through collaboration, innovation, economies of scale, supply chain partnering and cost management. Our products and designs are engineered to provide solutions to many challenges facing our clients: water retention, water storage, water conveyancing, water management, water treatment, fire-resistance criteria, chemical resistance parameters, infrastructural products, retaining walls, coastal erosion, decorative walls, to name a few. We are a solutions provider using innovative off-site concrete engineering and our industry leading semi-precast modular designs. The company is part of the FLI Group which is a diversified group of companies providing environmental solutions, services and technologies to private and public sector customers in the UK, France, Ireland and throughout the world. PRODUCTS INCLUDE Service reservoirs Process settlement tanks (PST / HST / FST / etc) Storm & attenuation tanks (network or site based) Process structures (ASP / TSR / GAC / RGF / etc) MCC service foundations Bund wall system Chambers Channel & lids Comms chambers Multi-purpose chambers Bespoke culverts Holding tanks Barriers Demountable fence supports (international airport approved) Ballast blocks Dry flow channelling Foundation bases Blast fence supports

    Precast Concrete
    Concrete Works
    Forkers Ltd logo

    Forkers Ltd

    United Kingdom

    Forkers has been undertaking main drainage and sewerage schemes for the water industry, local authorities and private clients for over 30 years. Our in depth experience in this field covers a complete range of drainage solutions, construction techniques, ground conditions and contract values and also includes design and construct schemes. Sewers and culverts. Pumping stations, M&E installations. Timber headings and no-dig techniques. Storage tanks and attenuation systems. Dig down repairs, relining and renovation. Rising mains and pipelines. Shaft sinking and pipejacking. Screened overflows (UIDs). First time sewerage schemes. Clean water trunk mains and pipelines. Extensive in-house capabilities include: Roads, bridges & development infrastructure. Foundations. River, canal and watercourse improvements. Site investigation. Specialist drilling and grouting. Mini-piling. Reinforced concrete structures. Machine bases, press pits and basements. Contaminated land remediation. Mine workings. Mine shaft stabilisation. Soil nailing. We also provide a range of services in the Renewable Energy sector. Ground source heating boreholes and installations. Coal bed methane extraction. Wind farm infrastructure and foundations. Forkers Civil Engineering have provided sewerage and main drainage services to Severn Trent Water for over 35 years.

    Networks - Sewerage
    Accreditations

    Tank Coating and Lining Systems: Epoxy, Rubber, and Glass-Fused Steel for Water Storage

    Internal coatings and linings protect water storage tanks and vessels from corrosion, provide hygienic food-grade surfaces, and extend service life by isolating the tank material from stored water or process fluid. System selection depends on the substrate (carbon steel, concrete, GRP), the stored fluid (potable water, wastewater, chemicals, hydrocarbons), operating conditions (temperature, pressure, cyclic loading), and the required service life. For potable water: all internal coating materials must meet DWI (Drinking Water Inspectorate) Regulation 31 approval (England/Wales), WRAS approval, and in Scotland, WATS (Water Authority Technical Specification). These approvals require materials to be tested per BS 6920 (extraction testing at 20 degrees C, 50 degrees C, and 70 degrees C) to confirm they do not leach substances affecting water taste, odour, or health at the concentrations leached. Key coating system types: fusion-bonded epoxy (FBE, electrostatic spray, 250 to 400 micron DFT); liquid-applied epoxy (2-component, 200 to 500 micron DFT, multiple coats); glass-fused-to-steel (GFS, vitreous enamel fused at 820 to 840 degrees C, 0.25 to 0.40 mm fused glass layer); cementitious mortar lining (sprayed or hand-applied, 10 to 20 mm, used for larger diameter steel pipelines and tanks).

    Glass-fused-to-steel (GFS) technology is widely used for bolted steel water tanks (potable storage, wastewater, biogas digesters). GFS process: steel panels (typically 3 to 5 mm S275/S355) are hot-dipped in frit (crushed glass mixed with clay and metal oxides), fired at 820 to 840 degrees C, fusing a 0.25 to 0.40 mm glassy enamel layer onto both surfaces; the glass layer is inert, hygienic, chemically resistant (pH 3 to 10 indefinitely), and eliminates the need for periodic repainting. Standard: ISO 28765 (Vitreous and porcelain enamels - design and manufacture of plant used in corrosive conditions); US NSF 61 (Drinking Water System Components); AWWA D103 (Factory-Coated Bolted Carbon Steel Tanks for Water Storage). GFS bolted tanks (Tank Connection, ZCL Composites, CST Industries, DN Tanks): panels shipped flat and bolted on-site with EPDM or butyl joint sealant; available 50 to 25,000,000 L; rapid installation (1,000 m3 tank erected in 1 to 2 days vs 3 to 6 months for site-welded tanks); panels replaceable without full tank replacement if localised damage. Service life: 20 to 30 years typical for GFS coated panels in potable water service; external coating (polyurethane or epoxy) protects the external enamel surface.

    Rehabilitation and recoating of existing water tanks: the UK water industry undertakes extensive tank rehabilitation programmes due to ageing Victorian and mid-20th century reinforced concrete and steel reservoirs. Concrete reservoir rehabilitation: crack injection (epoxy or cementitious grout); surface scarification and cleaning (high-pressure water jetting at 200 to 700 bar); cement-based coating (micro-silica modified polymer cement, 3 to 6 mm DFT - BASF MasterProtect, Sika Watertight concrete systems, Kryton International KIM admixtures); or polyurea spray lining (Huntsman, Novacoat, BASF, 1.5 to 3 mm DFT, rapid cure). Steel tank recoating: abrasive blast cleaning to Sa 2.5 (ISO 8501-1) minimum; primer and intermediate coats of solvent-free epoxy; topcoat 350 to 500 micron total DFT; inspection by certified inspector (NACE CIP Level 2 or FROSIO III) using DFT gauge (per ISO 2808), holiday detection (DC spark test at 5 to 10 V per micron DFT), and adhesion pull-off test (minimum 3 MPa per ISO 4624). PSSR 2000 and BS 6920 compliance maintained through in-service inspection and recoating before coating failure allows substrate corrosion.

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    Frequently Asked Questions

    What coating is used inside a potable water tank?

    Potable water tank coatings must hold DWI Regulation 31 (England/Wales) or WRAS approval, certifying compliance with BS 6920 extraction testing. Approved coating types: (1) Solvent-free epoxy (most common for steel tanks): 2-component epoxy, 300 to 500 micron DFT applied in 2 to 3 coats; DWI-approved products: Jotun Jotatemp, Hempel HEMPADUR, Sherwin-Williams Sher-Glass; requires abrasive blast cleaning to Sa 2.5 before application; recoating interval typically 10 to 20 years; (2) Glass-fused-to-steel (GFS/vitreous enamel): factory applied, DWI/NSF 61 approved; no site-applied coating required; preferred for bolted panel tanks; (3) Fusion-bonded epoxy (FBE): factory-applied for pipes and small vessels; thinner (250 to 400 micron) but very uniform; (4) Cementitious mortar: for concrete tanks and large-diameter concrete-lined steel mains; minimum 10 mm thickness; approved by WRAS; very long service life (30 to 50 years); (5) Polyurea spray: rapid-cure 1.5 to 3 mm membrane; increasing use in concrete reservoir rehabilitation; DWI approval for specific products (confirm before specification). Prohibited: lead-based coatings, coal tar epoxy (prohibited in potable water service per DWI circular 1984), and any coating not holding current BS 6920/WRAS/DWI approval.

    How often do water tank coatings need to be replaced?

    Service life of water tank coatings depends on coating type, substrate preparation quality, and operating conditions: Solvent-free epoxy (steel tank): 10 to 20 years with good initial surface preparation (Sa 2.5 blast) and correct DFT (300 to 500 micron); coastal or chloride-rich water environments: 8 to 15 years. Glass-fused-to-steel: 20 to 30 years for factory-applied panels in potable water; touch-up of damaged areas (chips from installation) required at 5 to 10 years; full panel replacement at 25 to 35 years. Cementitious mortar (concrete tank): 20 to 40 years for well-applied mortar on sound substrate; dependent on concrete base condition (crack-free and structurally sound). Polyurea: 15 to 25 years claimed; less in-service data than epoxy. Assessment: annual inspection should include visual check for delamination, cracks, blistering; DFT measurement; holiday (pinhole) detection. Recoating threshold: typically when DFT has reduced to less than 50 percent of original or when holidays exceed 1 per m2. UK practice: Ofwat performance commitments track reservoir out-of-service risk; water companies maintain asset data on coating condition and schedule rehabilitation 3 to 5 years ahead of predicted failure to avoid unplanned service interruption.

    What is the process for lining a concrete water reservoir?

    Concrete reservoir rehabilitation lining process: (1) Inspection and survey: structural survey (CCTV, crack mapping, carbonation depth test with phenolphthalein indicator - pink is alkaline, colourless is carbonated/depassivated); water tightness test; ground investigation if external groundwater present; (2) Dewatering and cleaning: isolate, dewater (portable submersible pumps); clean with high-pressure water jetting 200 to 700 bar to remove biofilm, loose concrete, and surface contamination; (3) Structural repair: crack injection (epoxy for structural cracks; polyurethane foam for active leaking cracks); concrete patch repair with polymer-modified mortar (BASF MasterEmaco, Sika MonoTop); (4) Surface preparation: blast clean or vacuum diamond grind concrete surface to reveal aggregate; minimum 7 to 10 MPa surface tensile strength (pull-off test per ASTM D4541); surface should be saturated surface-dry (SSD) for cementitious coatings or bone-dry for polyurea; (5) Coating application: primer (where specified); base coat; finish coat; DFT measured per ISO 2808; holiday detection; (6) Cure and testing: cure per manufacturer's data sheet (typically 7 to 28 days for cementitious; 24 to 72 hours for polyurea); water soak test and bacteriological sampling before return to service. Typical project duration: 4 to 16 weeks depending on reservoir size and scope; typically scheduled during planned maintenance outage.

    What is glass-fused-to-steel (GFS) lining and where is it used?

    Glass-fused-to-steel (GFS), also called vitreous enamel or porcelain enamel on steel, is a permanent factory-applied coating where glass frit (powdered glass with metal oxide pigments and adhesion agents) is sprayed or dipped onto steel panels and fired in a furnace at 820 to 840 degrees C; the glass melts, bonds chemically to the steel surface (through an iron-boron bond layer), and solidifies into a smooth, impermeable 0.25 to 0.40 mm glass coating. Properties: pH resistance 1 to 10 (no degradation); inert to potable water, wastewater, biogas, hydrocarbons; smooth surface (Ra less than 1 micron) inhibits biofilm adhesion; UV and weather resistant on external surfaces. Applications: potable water storage tanks (bolted panel type, common in UK, US, Australia); wastewater storage and equalization tanks; anaerobic digester covers and walls (resistant to H2S at greater than 3,000 ppm); industrial chemical storage. Standards: ISO 28765 (vitreous enamel plant); US NSF/ANSI 61 (drinking water components); AWWA D103 (bolted steel tanks, internally GFS-lined). Leading manufacturers: Tank Connection (US), CST Industries (Aquastore tanks), ZCL Composites, DN Tanks (with GFS option), Permastore (UK/international). Advantages over site-applied coatings: factory quality control; no on-site coating (no weather dependency); panels individually tested; damaged panels replaceable without full relining.

    Case Study·Water infrastructure asset management and tank rehabilitation
    Challenge

    A water company in the South West of England had 22 service reservoirs with epoxy-lined carbon steel roofs dating from 1985 to 1996. Coating condition surveys showed 14 reservoirs had coating delamination, rust blistering, or pinhole penetration in more than 15% of the roof surface area, risking iron contamination of the stored potable water. DWI required remediation within 36 months under Regulation 28.

    Approach

    A specialist tank lining contractor assessed all 22 reservoirs using holiday testing, adhesion pull tests, and DFT (dry film thickness) measurement. Six reservoirs with pervasive delamination required full blast cleaning (Sa 2.5 per BS EN ISO 8501-1) and re-lining with two-component epoxy (Jotun Tankguard 412, 300 micron DFT, DWI-approved). Eight reservoirs required spot repair and local overcoat. Eight reservoirs in good condition (DFT above 200 micron, adhesion above 5 MPa, less than 5% defective area) were monitored and deferred. All relining was completed with DWI Regulation 31-approved materials.

    Outcome

    All 22 reservoirs were assessed and 14 remediated within 28 months, within the DWI 36-month window. Post-relining holiday testing confirmed zero pinhole defects on all re-lined surfaces. Iron particle complaints in the downstream zones fell by 88% in the following 12 months. DWI confirmed compliance closure at a follow-up inspection. Whole-life cost modelling predicted the new epoxy coatings would deliver 20 to 25 years service life before next major inspection requirement.

    Questions to Ask Shortlisted Providers

    1. 1

      What is the current tank material, coating type, age, and condition (DFT, adhesion pull test, holiday test results)?

      Coating selection for refurbishment depends on whether the existing system is epoxy, GRP, polyurea, or bitumen; incompatible overcoats cause delamination; tanks with active corrosion require full blast cleaning before any new coating.

    2. 2

      Is the tank used for potable water, wastewater, or chemical storage, and are DWI Regulation 31-approved materials required?

      Potable water contact linings must be on the DWI Approved Products List or hold WRAS approval; using non-approved coatings on potable water tanks is a breach of WS(WQ)R 2016 and requires DWI notification and potential remediation.

    3. 3

      What are the surface preparation requirements (blast cleaning standard, minimum anchor profile) and can the tank be decommissioned for the full required preparation period?

      Two-part epoxy and polyurea coatings require Sa 2.5 blast cleaning (BS EN ISO 8501-1) to achieve manufacturer-warranted adhesion; wet-on-wet application in humid conditions without dehumidification causes pinhole formation and early delamination.

    4. 4

      What inspection and test plan (ITP) applies to the coating works and who is the qualified inspector (FROSIO Level 3 or equivalent)?

      DWI and water company asset standards require independent coating inspection during surface preparation, between coats, and on the finished system; FROSIO Level 3 or NACE CIP Level 2 certification is typically required for the inspector.

    5. 5

      What is the tank back-in-service programme and how will commissioning and disinfection be managed post-coating?

      New coatings require a cure period (typically 7 to 14 days at 10 degrees C) before water immersion; BS 8558 commissioning (disinfection, bacteriological sampling) is required before service; the overall programme must ensure supply security to the downstream zone.

    What Drives Cost in This Category

    Surface preparation method and extent (blast cleaning vs hand tool vs power tool)

    Sa 2.5 abrasive blast cleaning (required for new coating on corroded steel) costs GBP 8 to 20 per m2; hand or power tool cleaning (St 3) costs GBP 3 to 8 per m2 but achieves only 50 to 60% of epoxy adhesion compared to blast; access scaffolding or rope access adds GBP 3 to 15 per m2.

    Coating system DFT and number of coats

    Two-component potable water epoxy coatings cost GBP 15 to 35 per m2 installed at 300 micron DFT (two coats); GRP sprayed glass lining costs GBP 25 to 60 per m2; polyurea spray lining costs GBP 40 to 80 per m2; GFS panels as replacement cost GBP 120 to 250 per m2 installed.

    Decommissioning and service security during lining works

    Service reservoir decommissioning requires network pressure management and alternative supply; temporary storage (tankers, flexible bladder tanks) costs GBP 2,000 to 8,000 per day for large reservoirs; programme planning to minimise decommissioned period is the primary cost driver.

    DWI approval and commissioning

    DWI Regulation 28 notification and Regulation 31 approval documentation costs GBP 500 to 2,500 in administrative time; BS 8558 disinfection and bacteriological sampling costs GBP 1,500 to 5,000 per reservoir; failed bacteriological results require repeat disinfection and additional programme time.

    Key Regulations & Standards

    Water Supply (Water Quality) Regulations 2016 Regulation 31 (DWI Approved Products)

    All materials in contact with potable water, including tank linings, coatings, and sealants, must be on the DWI Approved Products List or hold WRAS approval; water companies must notify DWI under Regulation 28 before using non-standard materials.

    BS 8558:2015 Commissioning of Cold Water Storage Systems

    Specifies disinfection protocol (50 mg/L free chlorine, 1-hour contact), inspection, flushing, and bacteriological sampling requirements before returning a lined tank to potable water service; two consecutive clean samples at 24-hour intervals required.

    BS EN ISO 8501-1:2007 Surface Cleanliness Grades

    Defines blast cleaning standards Sa 1, Sa 2, Sa 2.5, Sa 3 and hand tool standard St 2, St 3; coating manufacturers specify minimum preparation grade in their product data sheet; Sa 2.5 is the minimum for submerged potable water epoxy coatings in UK water industry practice.

    WRAS (Water Regulations Advisory Scheme) Approval for Linings

    WRAS approval (BS 6920) is required for coatings and linings used in potable water contact; approval is product-specific and must be confirmed by the coating manufacturer for each specific formulation; generic material approval does not extend to unregistered variants.

    Explore Related Categories

    Tank & Vessel Manufacturing

    Tank Fabrication CompaniesStainless Steel Tank CompaniesConcrete Tank CompaniesPressure Vessel Companies

    Related Containment

    Geomembrane & Liner CompaniesManhole Rehabilitation Companies

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