Solutions · Wastewater treatment facilities
Waterstop, leak-sealing and crack-injection resins, concrete repair mortars, chemical-resistant coatings and equipment grout for treatment plants, lift stations and collection structures, stocked in the brands the specs name and shipped to the plant on your date. Tanks, basins and channels are where most of our wastewater work happens, from new construction through the repairs that come with a shutdown window.
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Tanks, basins and channels
Aeration basins, clarifiers, digesters, equalization tanks, wet wells, chlorine contact chambers and influent channels are all liquid-containing concrete. Every construction and expansion joint needs a waterstop matched to the joint, and every expansion that ties into an existing structure needs a retrofit system at the interface.
Choose the profile by the joint and the liquid, not the wall
| Joint condition | What to confirm | Profile family |
|---|---|---|
| Expansion or isolation joint in a tank or basin | Anticipated movement, head of liquid and the profile width relative to embedment on each side. | Ribbed centerbulb, dumbbell centerbulb, tear web |
| Construction joint with continuous reinforcement | Movement is negligible; confirm concrete cover each side of the profile and the splice method. | Flat ribbed, base seal, dumbbell |
| Slab-to-wall joint in a basin floor | Pour sequence and whether the profile sits in the first pour or at the bottom of the wall form. | Base seal, split flange |
| New concrete to an existing structure | Condition of the existing face, anchor spacing, batten bars and epoxy gel; movement at the interface. | PVC retrofit 655 / 609 series |
| Chemical feed, sludge or industrial pretreatment | Check the waterstop material against the actual chemistry and concentration; standard PVC is not rated for every fluid. | TPE-R, polyethylene or stainless; see TPERWaterstop.com |
Before you order: Sika Greenstreak PVC profiles meet CRD-C 572-74 and NSF/ANSI 61; splices are heat-welded using the profile's own material. Order fittings, splicing irons and hog rings with the roll footage, not after the pour schedule is set.
Infiltration and leaks
Leaking cracks, cold joints and pipe penetrations in wet wells, lift stations, manholes, vaults and tank walls are sealed by injecting a water-activated polyurethane resin that reacts with the water in the crack. Structural cracks that need to carry load are a separate repair, usually epoxy injection once the crack is dry.
| Condition | Usual approach | Examples in stock |
|---|---|---|
| Active leak through a large crack, joint or pipe penetration | Hydrophilic polyurethane injected through ports, or soaked into oakum or resin rod for gaps and annular spaces around pipes. | Avanti AV-202 Multigrout |
| Active leak through a tight or hairline crack | A low-viscosity water-activated resin that penetrates fine cracks under injection pressure. | Prime Flex 900 XLV, AV-202 Multigrout LV |
| Leaking joint or failed sealant that keeps moving | A bonded flexible tape system over the joint rather than a rigid repair. | Sikadur Combiflex SG |
| Dry structural crack that must restore strength | Epoxy injection with a surface seal, per the engineer's repair detail. Not a leak-sealing method on an actively wet crack. | Epoxy injection products |
Before you order: AV-202 Multigrout is certified to NSF/ANSI/CAN 61 and Prime Flex 900 XLV is NSF/ANSI 61 compliant; the AV-203 accelerator is not covered by the AV-202 certification. Both resins are temperature-sensitive, so condition material to the manufacturer's range before a cold-weather shutdown. Count ports, packers and flush with the resin.
Headworks, channels and clarifiers
Spalled clarifier walls, channel soffits, weir walls, grit and screening structures and lift-station wet wells are usually repaired from inside the structure during a bypass or shutdown. The repair mortar is chosen by orientation and depth, then by the time the unit can stay out of service.
Hand-applied repairs on walls and the underside of channel covers need a mortar made to stay in place at that orientation. SikaQuick VOH lists up to 3 inches vertically or 2 inches overhead per layer; Five Star Structural Concrete V/O has its own minimum depth and lift guidance. Do not carry one product's build limits over to another.
Formed repairs rebuild deeper sections, walkway edges and equipment pedestals. Eucocrete Supreme is a form-and-pour material placed from 1 inch, with added aggregate above 6 inches. Confirm form tightness, access around reinforcement and curing before the unit goes back into service.
Remove concrete to sound material behind the bar, clean the steel and follow the repair system's bonding and priming steps. A corrosion inhibitor supports the repair; it does not replace concrete removal or reinforcement preparation.
Headworks, wet wells and covered channels exposed to hydrogen sulfide can lose concrete to acid attack well above the waterline. A general-purpose repair mortar is not a corrosion-resistant lining. Use the system the engineer specifies for that exposure, and send us the section so we can match it.
Chemical feed and containment
Chemical feed rooms, bulk storage containment, truck unloading pads and trenches see concentrated treatment chemicals that ordinary concrete and cementitious coatings cannot take. Choose the coating from the actual chemical list, concentration and temperature, then plan the surface preparation and moisture testing it requires.

Five Star Epoxy Novolac Coating is a two-component, 100% solids chemical-resistant epoxy for horizontal and vertical concrete and steel. On concrete it goes over Five Star Epoxy Novolac Primer, on concrete at least 7 days old and within the moisture limit on the data sheet. One 3.9-gallon unit covers approximately 310 sq ft at 20 mils.
Tell us the chemicals, concentrations and area and we will check the resistance data and size the primer and coating order together.
Before you order: SikaFerrogard 903 is a surface-applied corrosion inhibitor for existing reinforced concrete. Euclid Aquaseal is an underwater epoxy coating and patching system for concrete in fresh or salt water, used where a structure cannot be dewatered. Neither is a substitute for a specified chemical-resistant lining.
Pumps, blowers and drives
Raw sewage and sludge pumps, aeration blowers, clarifier drives, mixers and screens sit on baseplates that need full bearing on the foundation, often in wet or chemical service. The grout follows the equipment manufacturer's requirement and the exposure at the base.
| Equipment | What drives the choice | Usual direction |
|---|---|---|
| Blowers, large pumps and rotating equipment | Vibration, dynamic load and alignment retention. The OEM installation manual governs. | Epoxy machinery grout where the OEM calls for it |
| Chemical feed pumps and skids in containment | Exposure to concentrated treatment chemicals at the base. | Chemical-resistant epoxy grout, such as Five Star Epoxy Novolac Grout |
| Clarifier drives, screens and static equipment | Static load, bearing area, anchor bolts and return-to-service time. | Non-shrink cementitious grout to ASTM C1107, or epoxy where specified |
| Brackets, rails, guide pipes and supports in wet areas | Anchor evaluation report, embedment and conditions in a wet or submerged hole. | Adhesive or mechanical anchors matched to the report the drawings cite |
Before you order: match the anchor to the evaluation report and installation conditions on the drawings; anchor ratings are per product, not per brand. Grout unit counts come from plate area, grout thickness and forming allowance; we will check your takeoff against the published yield.
Spec crosswalk
Estimators work from the spec book. These are the MasterFormat sections where treatment plant specs usually name the products on this page, and where each one lives on our site.
| Section | What it covers at a treatment plant | Brands we stock | Shop |
|---|---|---|---|
| 03 15 13 Waterstops | Construction and expansion joints in basins, clarifiers, digesters, wet wells and channels | Sika Greenstreak, Adeka | Waterstop |
| 03 01 30 Maintenance of Cast-in-Place Concrete | Spall, wall, soffit and edge repair on plant structures | Sika, Euclid, Five Star | Repair mortars |
| 03 64 00 Injection Grouting | Leak sealing and crack injection in tanks, vaults, manholes and wet wells | Avanti, Prime Resins, Sika | Urethane grouts |
| 03 62 00 Non-Shrink Grouting | Clarifier drives, screens, static equipment and bearing plates | Sika, Five Star, Euclid, Dayton Superior | Cement grout |
| 03 63 00 Epoxy Grouting | Blowers, pumps and chemical-area equipment bases | Five Star, Euclid, Sika, Stratarock | Epoxy grout |
| 09 96 00 High-Performance Coatings | Chemical containment, feed rooms, trenches and process-area concrete | Five Star, Sika, Euclid | Coatings |
| 05 05 19 Post-Installed Concrete Anchors | Equipment anchorage, guide rails, brackets and pipe supports | Simpson Strong-Tie, Adhesives Technology, Sika | Anchoring |
| 07 92 00 Joint Sealants | Building joints, slab joints and penetrations outside immersion service | Sika, Tremco, ChemLink | Caulks and sealants |
Project orders
Send the specified products and quantities for the structure, phase or shutdown you are pricing. If the waterstop, resin or coating is still under review, include the spec section and the joint, leak or exposure details and we will help select it.
Indcon runs dedicated sites for the product families where selection is the hard part. Each carries the full line, guides and selection help for that material.

Thin, standard and deep-pour epoxy machinery grout from Five Star, Sika, Euclid, Stratarock and Adhesives Technology, with mixing and placement guides.
Visit Epoxy-Grout.com
Standard, high and ultra-high-strength non-shrink cementitious grout for baseplates, bearing plates and equipment foundations.
Visit CementGrout.com
Every Sika Greenstreak PVC profile by joint type, retrofit systems, and the complete guide to selection, splicing and installation.
Visit PVCWaterstop.comChemical-resistant waterstop (TPE-R, polyethylene, stainless) is covered at TPERWaterstop.com; new-to-existing joint systems at RetrofitWaterstop.com.
It depends on the joint, not the tank. Contraction, expansion and isolation joints move, so they need a profile with a centerbulb or tear web that can flex as the joint opens, closes or shears. Construction joints with reinforcement running continuously through them see negligible movement, so a flat ribbed profile is usually enough. Where a new basin ties into an existing one, use a retrofit waterstop anchored to the existing face. PVC waterstop is recognized under ACI 350 for environmental engineering concrete structures; use factory-made fittings at corners and intersections.
Not automatically. Check the waterstop material against the actual chemicals and concentrations. Where standard PVC is not suitable, TPE-R, polyethylene or stainless waterstop may be specified; TPERWaterstop.com covers those options.
Inject a water-activated polyurethane resin through ports drilled into the crack or joint. Use a higher-viscosity grout such as AV-202 Multigrout for large cracks, joints and pipe penetrations, and a low-viscosity resin such as Prime Flex 900 XLV for tight cracks. If the crack is structural, the engineer's repair detail may call for epoxy injection once the leak is stopped and the crack is dry.
NSF/ANSI 61 covers health effects for products in contact with drinking water. It is useful for potable and reuse structures but it is not a chemical-resistance or hydrogen-sulfide rating. Check the product's data for the actual wastewater exposure.
Choose from the chemical list, concentration and temperature. Epoxy novolac coatings such as Five Star Epoxy Novolac Coating are used for containment, trenches and process areas; on concrete they require the matching primer, adequate cure and moisture testing before application.
Remove deteriorated concrete to sound material, prepare exposed reinforcement and rebuild with a repair mortar suited to the orientation and depth. Where hydrogen sulfide caused the damage, the repair also needs the corrosion-resistant system the engineer specifies, or the same attack will return.
Follow the equipment manufacturer's installation requirements first. Rotating equipment is commonly grouted with epoxy machinery grout; chemical-area pumps may need a chemical-resistant epoxy grout; static equipment is often grouted with non-shrink cementitious grout to ASTM C1107.
Yes. We ship pallets and rolls on common-carrier freight to the plant gate or laydown area with a required-on-site date. Give us the delivery ZIP, receiving hours, site access requirements and the shutdown window with the order.
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