Top 10 Manufactures in 2026
Top 10 OEMs
Top 10 Manufacturer Lists
Curated rankings of leading equipment manufacturers serving the water and wastewater industry — organized by treatment process and equipment category
Specifying equipment for a water or wastewater project means evaluating dozens of manufacturers across performance, reliability, lifecycle cost, service support, and regional availability. Each list below highlights ten standout manufacturers in a specific equipment category — covering pumps, valves, instrumentation, disinfection systems, dewatering equipment, and more. Use these as a starting point for shortlisting vendors, comparing capabilities, and structuring your evaluation criteria.
Pumps
Top 10 Centrifugal Pumps
Leading centrifugal pump manufacturers — end suction, split case, vertical turbine, and multistage configurations for water and wastewater service.
Centrifugal Pump ManufacturersTop 10 Non-Clog Pumps
Non-clog wastewater pump manufacturers engineered for raw sewage, sludge, and solids-laden flows in lift stations and treatment plants.
Non-Clog Pump ManufacturersTop 10 Grinder Pumps
Grinder pump manufacturers serving low-pressure sewer systems, residential applications, and tough solids-handling duties.
Grinder Pump ManufacturersTop 10 Double Disc Pumps
Double disc pump manufacturers offering positive displacement solutions for sludge transfer, dewatering feed, and high-solids applications.
Double Disc Pump ManufacturersTop 10 Dry Pit Submersible
Dry pit submersible pump manufacturers offering flood-resistant designs that combine submersible motor reliability with dry pit accessibility.
Dry Pit Submersible ManufacturersTop 10 Conventional Dry Pit
Conventional dry pit pump manufacturers — vertical and horizontal configurations with above-grade motor mounting for easy maintenance access.
Conventional Dry Pit ManufacturersTop 10 Submersible Mixers
Submersible mixer manufacturers providing process mixing, anti-stratification, and flow generation for biological treatment basins.
Submersible Mixer ManufacturersTop 10 Impellers
Impeller manufacturers — open, semi-open, closed, vortex, and grinder impeller designs for every pump duty in the water sector.
Impeller ManufacturersValves
Top 10 Gates
Slide gate, sluice gate, and weir gate manufacturers serving channel isolation, flow control, and tank dewatering applications.
Gate ManufacturersTop 10 Pressure Relief Valves
Pressure relief valve manufacturers protecting pumps, pipelines, and pressure vessels from overpressure events across water systems.
Pressure Relief Valve ManufacturersTop 10 Miscellaneous Valves
Specialty valve manufacturers — air release, vacuum break, surge anticipation, altitude, and other purpose-built valves for water service.
Specialty Valve ManufacturersTop 10 Valve Construction Services
Valve construction service providers — installation, fabrication, and commissioning specialists supporting water and wastewater capital projects.
Valve Construction ServicesTop 10 Valve Service Providers
Valve service and repair specialists — testing, refurbishment, actuation upgrades, and field service for water utility valve infrastructure.
Valve Service ProvidersInstrumentation & Controls
Top 10 SCADA Systems
SCADA system manufacturers powering modern water treatment — software platforms, integration partners, and HMI capabilities for utility operations.
SCADA ManufacturersTop 10 Tanks & Covers
Tank and cover manufacturers — bolted steel, welded, glass-fused, and aluminum geodesic dome systems for storage and odor containment.
Tank & Cover ManufacturersTop 10 Adapter & Adaptation Kits
Adapter and adaptation kit manufacturers supplying retrofit hardware, connection components, and upgrade kits for legacy water infrastructure.
Adapter Kit ManufacturersTop 10 Process Services
Process service providers offering operations support, optimization, and specialty services for water and wastewater treatment systems.
Process Service ProvidersTop 10 Other Manufacturers
Specialty equipment manufacturers serving niche needs across water and wastewater plants — components, accessories, and ancillary systems.
Specialty ManufacturersAdvanced Treatment & Disinfection
Top 10 UV Disinfection Systems
UV disinfection manufacturers — low-pressure, medium-pressure, and amalgam lamp systems for wastewater and drinking water disinfection.
UV Disinfection ManufacturersTop 10 Ozone Systems
Ozone generator and ozone treatment system manufacturers — corona discharge, UV ozone, and electrolytic generation for advanced oxidation.
Ozone System ManufacturersTop 10 Sodium Hypochlorite
Sodium hypochlorite suppliers and on-site generation manufacturers for chlorine disinfection in water and wastewater treatment.
Sodium Hypochlorite SuppliersTop 10 Ion Exchange Systems
Ion exchange system manufacturers serving softening, demineralization, nitrate removal, and PFAS treatment applications.
Ion Exchange ManufacturersTop 10 Flocculation Systems
Flocculation equipment manufacturers — paddle flocculators, hydraulic mixers, and chemical feed systems for clarification and DAF pretreatment.
Flocculation ManufacturersTop 10 Odor Control Chemicals
Wastewater odor control chemical suppliers — iron salts, calcium nitrate, magnesium hydroxide, and oxidant programs for hydrogen sulfide control.
Odor Control ChemicalsSludge Treatment & Dewatering
Top 10 Solids Dewatering
Solids dewatering equipment manufacturers — belt presses, centrifuges, screw presses, and the engineering tradeoffs across technologies.
Dewatering ManufacturersTop 10 Dewatering Centrifuges
Decanter centrifuge manufacturers for sludge dewatering and thickening — high-performance machines for municipal and industrial biosolids.
Centrifuge ManufacturersTop 10 Gravity Belt Thickeners
Gravity belt thickener manufacturers — continuous polymer-conditioned thickening systems for waste activated sludge and primary sludge.
Gravity Belt ManufacturersTop 10 Sludge Handling
Sludge handling equipment manufacturers — conveyors, pumps, storage hoppers, and material transfer systems for biosolids logistics.
Sludge Handling ManufacturersPreliminary & Primary Treatment
Top 10 Channel Grinders
Channel grinder manufacturers protecting downstream pumps and equipment by reducing rags, debris, and large solids in headworks channels.
Channel Grinder ManufacturersTop 10 Inline Grinders
Inline grinder manufacturers — pipe-mounted shredders for force main protection and pump station applications across municipal systems.
Inline Grinder ManufacturersTop 10 Residential Grinders
Residential grinder pump and grinder unit manufacturers — single-family and small-system solutions for low-pressure sewer applications.
Residential Grinder ManufacturersTop 10 DAF Systems
Dissolved air flotation manufacturers — clarification systems for FOG removal, primary treatment, and industrial pretreatment applications.
DAF System ManufacturersTertiary Treatment & Filtration
Top 10 Belt Filter Presses
Belt filter press manufacturers — continuous dewatering equipment for municipal and industrial sludge with proven low-energy operation.
Belt Filter Press ManufacturersTop 10 GAC Filtration Systems
Granular activated carbon filtration manufacturers — pressure and gravity GAC systems for taste/odor, organics, and PFAS treatment.
GAC System ManufacturersWater Quality & Monitoring
Top 10 Flow Meters
Flow meter manufacturers — magnetic, ultrasonic, Coriolis, and open channel flow measurement for water and wastewater process control.
Flow Meter ManufacturersTop 10 pH/ORP Analyzers
pH and ORP analyzer manufacturers — sensors, transmitters, and analytical instruments for process monitoring across treatment trains.
pH/ORP Analyzer ManufacturersTop 10 Instrumentation
Process instrumentation manufacturers — level, pressure, temperature, and analytical instruments serving water treatment plants.
Instrumentation ManufacturersWater Supply & Infrastructure
Top 10 CSO/Stormwater
Combined sewer overflow and stormwater equipment manufacturers — screens, vortex separators, swirl concentrators, and storage solutions.
CSO/Storm ManufacturersTop 10 Piping Accessories
Piping accessories manufacturers — couplings, restraints, expansion joints, and pipe support systems for water transmission and distribution.
Piping Accessory ManufacturersIndustrial & Training
Top 10 Soluble Organics Technologies
Treatment technologies for soluble organics in industrial wastewater — biological, oxidation, and adsorption approaches with selection criteria.
Soluble Organics TechnologiesTop 10 Training Providers
Training providers for water and wastewater operators — certification prep, continuing education, and specialized technical training programs.
Training Providers