NSF/ANSI 61 Certified | No Hot Work | Cold Applied
Water and Wastewater Repair Solutions
Protective coatings and repair composites for treatment plants, pump stations, and distribution systems. Extend asset life and meet regulatory requirements.
The Challenge
Water and wastewater infrastructure faces constant attack. In wastewater systems, hydrogen sulfide (H₂S) converts to sulfuric acid and destroys concrete structures from the inside out. Crown corrosion eats through manholes and pipes. Microbially induced corrosion (MIC) accelerates deterioration.
Pumps erode from grit and cavitation. Clarifiers and basins spall. Aging infrastructure requires ongoing maintenance to meet regulatory standards and serve growing communities. Many facilities operate 24/7 with limited shutdown windows.
Pacific Northwest utilities deal with high rainfall, seismic requirements, and remote facilities that complicate maintenance schedules. Traditional concrete repairs take weeks to cure and often fail at the bond line.
The Belzona Solution
Belzona repair composites and protective coatings are engineered for water and wastewater environments. These cold-applied materials rebuild damaged concrete with zero shrinkage, protect against H₂S attack, and return structures to service in 24-48 hours instead of weeks.
For potable water applications, Belzona 5811 is NSF/ANSI 61 certified for drinking water contact. For wastewater, chemical-resistant coatings protect against hydrogen sulfide and biological attack. For pumps, ceramic composites rebuild worn components to OEM specifications.
Belzona Technology Northwest provides product selection and technical support for water and wastewater utilities throughout Washington, Oregon, Alaska, and Northern Idaho.
Facility Types We Serve
Belzona products are trusted across water and wastewater infrastructure — including but not limited to:
Water Treatment Plants
Clarifiers, filters, basins, chemical feed systems, potable water tanks
Wastewater Treatment Plants
Headworks, grit chambers, clarifiers, digesters, aeration basins, UV systems
Pump and Lift Stations
Wet wells, dry wells, pumps, valves, piping, control buildings
Collection Systems
Manholes, interceptors, force mains, gravity sewers, junction structures
Distribution Systems
Water mains, storage tanks, reservoirs, pump stations, valve vaults
Stormwater Facilities
Detention basins, outfalls, culverts, treatment structures
Have a different facility type? Call us at (425) 610-4902 — we have solutions for virtually any water infrastructure challenge.
Problems We Solve
Common failure modes that threaten infrastructure integrity and regulatory compliance — and more:
Hydrogen Sulfide (H₂S) Attack
H₂S converts to sulfuric acid and destroys concrete from the inside out. Chemical-resistant coatings provide long-term protection.
Crown Corrosion
Manholes and pipes corrode at the crown where H₂S concentrates. Rebuild and protect corroded structures without replacement.
Microbiologically Induced Corrosion
Bacteria accelerate concrete deterioration in wastewater environments. Protective coatings create a barrier against MIC.
Concrete Spalling and Erosion
Clarifiers, channels, and basins erode over time. Rebuild profiles with zero-shrinkage composites that bond stronger than concrete.
Pump Erosion and Cavitation
Grit and cavitation erode pump casings and impellers. Ceramic composites rebuild worn components to OEM specifications.
Tank and Containment Leaks
Potable water tanks and chemical containment areas develop leaks. NSF 61 certified linings for drinking water contact.
Belzona Concrete Repair vs. Traditional Methods
Traditional concrete patches often fail at the bond line and take weeks to cure. Belzona composites bond stronger than concrete itself and return structures to service in 24-48 hours.
| Consideration | Traditional Concrete Patch | Belzona 4111 + 5811 |
|---|---|---|
| Bond Strength | Often fails at bond line | Concrete fails first (525 psi) |
| Shrinkage During Cure | Yes — causes cracking | Zero shrinkage |
| H₂S / Chemical Resistance | None — corrodes | Chemical resistant coating |
| Time to Service | 28 days full cure | 24-48 hours |
| Potable Water Contact | Varies by product | NSF/ANSI 61 Certified |
| Application Method | Forms, wet curing required | Hand-applied, no forms |
| Compressive Strength | 3,000-5,000 psi typical | 13,000 psi |
Bond Strength
525 psi
concrete fails first
Compressive Strength
13,000 psi
stronger than concrete
Potable Water
NSF 61
certified for drinking water
Performance data from Belzona 4111 (FN10007) and 5811 (FN10159) specification sheets.
Products for Water and Wastewater
Repair composites, protective coatings, and linings for concrete structures, pumps, pipes, and process equipment.
Belzona 4111 (Magma-Quartz)
Epoxy-based concrete repair compound. 13,000 psi compressive strength, zero shrinkage. Ideal for rebuilding eroded clarifiers, basins, and channels.
Belzona 5811 (Immersion Grade)
Two-coat epoxy system for tanks, clarifiers, and immersed structures. NSF/ANSI 61 certified for potable water contact. ABS approved.
Belzona 4311 (Magma CR1)
Chemical-resistant coating for concrete protection against hydrogen sulfide, acids, and biological attack in wastewater environments.
Belzona 1311 (Ceramic R-Metal)
Ceramic-reinforced composite for rebuilding pump casings, impellers, and volutes. Excellent erosion and cavitation resistance.
Belzona 1341 (Supermetalglide)
Erosion-resistant coating for pump internals. Improves efficiency and reduces energy consumption. Surface smoother than polished stainless.
Belzona 1111 (Super Metal)
Multi-purpose metal repair composite for general equipment rebuilding, valve repair, and emergency maintenance.
Need help selecting the right product? Call (425) 610-4902
Case Study
Clarifier Mechanism Repair
A municipal wastewater treatment plant experienced severe corrosion and erosion on their primary clarifier rake mechanism. The constant exposure to grit-laden wastewater had worn through the original coating, and the steel substrate was deteriorating rapidly. Replacement would require draining the clarifier and weeks of downtime.
The maintenance team applied Belzona 1111 (Super Metal) to rebuild the worn areas and Belzona 1321 (Ceramic S-Metal) for erosion-resistant protection. The repair was completed during a scheduled maintenance window without draining the clarifier, saving weeks of downtime and significant replacement costs.
- +Repair completed without draining clarifier
- +Erosion-resistant coating prevents future wear
- +Fraction of replacement cost
- +Extended equipment service life by years
Project Details
- Facility TypeMunicipal Wastewater Plant
- ApplicationClarifier mechanism repair
- Products UsedBelzona 1111, Belzona 1321
- ProblemCorrosion and erosion damage
- Applied ByIn-house maintenance team
Frequently Asked Questions
Is Belzona certified for drinking water contact?
Yes. Belzona 5811 (Immersion Grade) is NSF/ANSI 61 certified for potable water contact. This makes it suitable for water storage tanks, treatment plant structures, and distribution system components that contact drinking water.
How does Belzona protect against hydrogen sulfide?
Belzona chemical-resistant coatings create a barrier between the concrete substrate and the corrosive H₂S environment. The coating system resists the sulfuric acid that forms when H₂S converts on concrete surfaces.
How long before a repair can be put back in service?
Most Belzona concrete repairs can be returned to service within 24-48 hours, compared to 28 days for traditional concrete patches. Exact cure times depend on temperature and product selection — contact us for specific applications.
Can Belzona be applied to wet concrete?
Belzona 4111 can be applied to damp concrete surfaces — the specification shows pull-off adhesion of 450 psi on wet concrete (with cohesive failure of the substrate). This is critical for water and wastewater applications where complete drying is difficult.
Do you support remote facilities in our territory?
Yes. We support water and wastewater utilities throughout Washington, Oregon, Alaska, and Northern Idaho, including remote locations. We can coordinate product delivery and technical support to fit your maintenance schedule.
Water and Wastewater Applications
Treatment Plants
- +Clarifier repair and lining
- +Digester protection
- +Channel and weir repair
- +Headworks and grit chambers
- +Chemical containment
Collection and Distribution
- +Manhole rehabilitation
- +Wet well protection
- +Pipe lining and repair
- +Valve rebuilding
- +Tank lining (NSF 61)
Pumps and Equipment
- +Pump casing rebuilding
- +Impeller restoration
- +Efficiency coatings
- +Cavitation protection
- +Equipment mounting
Need Water or Wastewater Repair Products?
Describe your maintenance challenge and we will recommend the right Belzona products for your facility. Technical support for water and wastewater utilities throughout Washington, Oregon, Alaska, and Northern Idaho.
Belzona Technology Northwest is the exclusive authorized Belzona distributor for Washington, Oregon, Alaska, and Northern Idaho. Product sales, technical support, and application training for water and wastewater utilities throughout the Pacific Northwest.