Water & Wastewater Treatment
Coatings certified for potable water contact and resistant to industrial and municipal wastewater environments - from the treatment plant to the distribution system.
Protecting water infrastructure is protecting public health
Water treatment plants (WTPs), wastewater treatment plants (WWTPs), reservoirs, transmission mains and distribution systems have unique coating requirements: certification for potable water contact, resistance to microorganisms, impermeability and durability in permanently humid or immersed environments. A coating failure in a potable water reservoir is not just a maintenance problem - it is a public health risk.
Applications by structure type
Reservoirs and water tanks - concrete
Waterproofing and corrosion protection systems compliant with NSF/ANSI 61 for concrete in permanent contact with potable water.
Steel reservoirs and tanks
Internal epoxy lining with NSF/ANSI 61 approval + internal corrosion protection in immersion service.
Sewage troughs, channels and chambers
High-build epoxy systems resistant to H₂S, biogenic sulfuric acid and ammonia compounds - C5-I wastewater environment.
WTP clarifiers and filters
Concrete and steel coatings certified for contact with water under treatment - epoxy primers and intermediates with a compatible topcoat.
External structures of WTPs and WWTPs
C3/C4 anticorrosive system for steel structures in high-humidity environments - Zinc Clad® + Macropoxy® + Acrolon®.
Transmission mains and distribution piping
Internal linings compatible with potable water and external corrosion protection - compliant with ABNT NBR 6118 and NSF.
Key products
Macropoxy® 646 (NSF)
Formulation specific for potable water contact. For reservoirs, water tanks and distribution systems with NSF certification.
Learn moreTank Clad® HB
For immersion in wastewater, treated sewage and chemically treated water - high resistance to ammonia compounds and chlorine.
Learn more
Epo-Phen®
Resistance to biogenic H₂S and sulfuric acid in sewage chambers, collectors and galleries - low-pH wastewater environments.
Learn moreZinc Clad® + Macropoxy® + Acrolon®
For external steel structures of WTPs and WWTPs in humid environments with moderate to high atmospheric exposure.
Learn moreApplicable standards
NSF/ANSI 61
Certification for coatings, paints and materials in contact with potable water - mandatory for WTP and distribution system applications.
ABNT NBR 6118
Design of concrete structures - includes coating specifications for durability in aggressive environments such as sewage.
ISO 12944 C3–C5-I
For steel structures in high-humidity and wastewater environments - elevated industrial corrosivity.
ASTM G8
Cathodic disbonding resistance of immersed coatings - verification for piping and tanks in contact with soil and water.
Talk to people who understand your asset, not just paint
Describe your asset's condition and the environment it operates in. Our technical team will come back with a specification aligned to the applicable standard — and the service life you expect from the system.