Primary Treatment
Gravity settling of raw solids ahead of biological treatment — primary clarifier mechanisms, skimmers, and separator systems.
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Manufacturers
3A Makina, established in 1985 and headquartered in the ITOSB industrial zone in Tuzla, Istanbul, Turkey, is a steel and stainless steel fabrication c…
ABASCO LLC, founded in 1975 and now part of Atlas-SSI, designs and manufactures sediment and environmental spill containment products from a 30,000 sq…
AFL Industries, a division of RGF Environmental Group, manufactures industrial oil-water separation and spill containment equipment from RGF's headqua…
AKW Apparate + Verfahren GmbH, established in 1963 and based in Hirschau, Bavaria, is a German manufacturer and process engineering firm with over 60 …
ANMASI A/S, founded in 1989 in Denmark, operates as a manufacturing group serving the metal, plastics, food, and pharmaceutical industries through thr…
ANR Systech GmbH is a German engineering firm and equipment manufacturer with over 15 years of experience in industrial wastewater treatment and custo…
Abanaki Corporation, headquartered in Chagrin Falls, Ohio, is an ISO 9001:2015 certified manufacturer specializing in industrial oil skimming and cool…
Advance Tank and Construction (ATC) is a tank manufacturer and industrial contractor founded in 1968 (originally as Prairie Tank and Construction) wit…
Aero-Mod, founded in 1981 and headquartered in Manhattan, Kansas, is a wastewater treatment technology company and member of the Axius Water group tha…
ALAR Engineering Corporation, operating under Ovivo USA LLC, has designed and manufactured industrial wastewater treatment systems since 1970 from its…
AlgaFilm Technologies is a Canadian startup that has developed the Algae Forest Process, a photosynthetic wastewater treatment technology that simulta…
Amiad Water Systems, founded over six decades ago in Israel's kibbutz-led water management tradition, has grown into one of the world's foremost water…
Amwell, established in 1868 and operating today as a division of McNish LLC alongside Walker Process Equipment (1946) and E&I Corp (1975), is among th…
Andersson Water Sweden AB is a Swedish manufacturer with over 30 years of specialization in wastewater screening and screenings handling equipment, ex…
Applied Fabric Technologies Inc. (AFTI) was founded in 1988 by Peter Lane in Orchard Park, New York, originating from the Specialty Products Division …
Applied Mechanical Technology LLC, based in Momence, Illinois, designs and builds heavy-duty industrial wastewater treatment systems and tank and rail…
Aqseptence Group is a global manufacturer of filtration, separation, and water technology systems headquartered in Aarbergen, Germany, with approximat…
Founded in 1987 by Henning Gatz and headquartered in Bellingham, Washington, Aquacare Environment Inc is a manufacturer and integrator of recirculatin…
Aquafix Milieu B.V., headquartered in Mijdrecht, Netherlands and now part of the ACO Group, is the largest separator manufacturer in the Benelux regio…
Aquashield Inc appears in industry line cards and trade listings as a water and wastewater equipment supplier. Company details are pending verificatio…
Aquatech International, headquartered in Canonsburg, Pennsylvania, is a global water and wastewater treatment technology provider with over 43 years o…
Aqueous Recovery Resources (ARR) is a Bedford Hills, New York-based manufacturer of mechanical oil-water separation systems, operating under the Supar…
Aries Chemical, Inc., headquartered in Beaver Falls, New York, is a vertically integrated water and wastewater treatment company that combines in-hous…
Since 1982, Arlat Technology — a division of Price-Schonstrom Inc. based in Walkerton, Ontario — has supplied headworks and preliminary treatment equi…
Augusta Fiberglass Coatings, Inc. (AFC), headquartered in Blackville, South Carolina since 1974, is an ASME RTP-1 certified custom fabricator of fiber…
BAMO IER GmbH, based in Mannheim, Germany, develops and manufactures measurement technology for level, turbidity, and analytical monitoring in liquids…
BAP GmbH Abwassertechnik is a German manufacturer of valves, slide gates, and pipeline fittings purpose-built for wastewater treatment plants and sewe…
BDP EnviroTech LLC is a wastewater treatment technology company established in 1992 by founder and CEO Eric Li, who created the initial R&D center in …
BP GROUP d.o.o. is a Croatian environmental equipment manufacturer headquartered in Kneževi Vinogradi, operating subsidiaries across seven countries i…
Headquartered in Reichshof, Germany, H2O — The Water Company (Bader H2O) manufactures ceramic membrane filtration, ozone generation, and nanobubble te…
BioTriad Environmental, based in Stroudsburg, Pennsylvania, operates as a turnkey environmental solutions provider across five divisions addressing ai…
BioMicrobics, headquartered in Lenexa, Kansas, has spent over 27 years developing pre-engineered, pre-packaged water and wastewater treatment systems …
Boerger GmbH, headquartered in Borken-Weseke, Germany, is a manufacturer of rotary lobe pumps, macerating equipment, separation technology, and proces…
Boll & Kirch Filterbau GmbH, operating as BOLLFILTER, is a globally active filtration specialist headquartered in Kerpen, Germany, with over 75 years …
Boller GmbH & Co. KG, headquartered in Neunkirchen (Siegerland), Germany, traces its roots to the 2003 acquisition of Diehl Umwelttechnik, a firm orig…
Brentwood Industries, founded in 1965, is a thermoforming and injection molding manufacturer that produces engineered plastics for water and wastewate…
CB&I, owned by a consortium of financial investors led by Mason Capital Management, is a global provider of integrated storage and asset-management so…
Charter Machine Company (CMC), a subsidiary of Graphic Equipment Corporation based in Metuchen, New Jersey, has over 75 years of precision machine man…
ClearStream Environmental, founded in 2002 and headquartered in Sandy, Utah, is a manufacturer and engineering firm that designs, fabricates, and supp…
Colubris Cleantech B.V., formerly known as Redox, is a Dutch manufacturer headquartered in the Netherlands with over 40 years of experience in separat…
Coskun Arıtma A.Ş. is a Turkish environmental technology company founded in 2005 and headquartered in Dilovası, Kocaeli. The company designs, manufact…
DEL Corporation, doing business as DEL Tank and Filtration Systems, is a Scott, Louisiana-based manufacturer that has designed and built dewatering, s…
DanPumps A/S, now operating as part of SonFlow A/S following a merger, is a Danish pump manufacturer based in Kolding and Haderslev, Denmark. The comb…
Aquasentry, a division of the Darcy Group, is a UK-based manufacturer of liquid monitoring, detection, and pollution prevention systems focused on com…
DeFraWater GmbH, based in Seevetal-Hittfeld, Germany, has spent over 25 years engineering membrane-based water treatment systems for marine, industria…
ECOTECH Ltd., established in 1974 and based in Nea Smyrni, Greece, is a water and environmental engineering company that combines OEM manufacturing wi…
ELIQUO PMI AS, formerly known as Enwa PMI AS until a January 2024 rebranding, is a Norwegian engineering and manufacturing firm and one of Norway's le…
EMO sas is a French water and wastewater treatment equipment manufacturer based in Noyal-sur-Vilaine, with over 40 years of industry experience, 100-p…
ENVITES spol. s r.o. is a Czech manufacturing company based in Brno that has designed and produced water and sludge management equipment since 1990. W…
Eco World Water Corp, headquartered at 7900 Peters Road, Suite B-200, Fort Lauderdale, FL 33324 with a manufacturing facility at 505 SW 31st Avenue, O…
Ecologix Environmental Systems, headquartered in Georgia with over 20 years of experience, manufactures one of the industry's broadest catalogs of ind…
Ekoling d.o.o., headquartered in Hrušica, Slovenia, manufactures water and wastewater treatment products as a member of the Roto Group, which operates…
Elgin Separation Solutions, a product line of Astec with a heritage dating to 1864 and over 20,000 installations worldwide, specializes in liquid/soli…
Enduro Composites, now operating under the Creative Composites Group (CCG) umbrella alongside six other FRP composite companies, manufactures fibergla…
Enviropax, based in Salt Lake City, Utah, manufactures specialty process equipment for water and wastewater treatment applications, handling projects …
Environetics, Inc., based in Lockport, Illinois, designs, patents, and manufactures environmental control products that address liquid pollution probl…
Esli Endüstriyel Su Arıtma, established in 1997 and headquartered in Antalya's Organized Industrial Zone, has built 28 years of expertise as one of Tu…
Excel Fluid Group (EFG) is a turnkey pump station solutions provider serving municipal, commercial, industrial, data center, federal/military, aviatio…
FRC Systems International, part of the Chemtech division of Sulzer since becoming a Sulzer brand, has been designing and manufacturing wastewater trea…
FUCHS Fertigteilwerke, operating under FUCHS & Söhne Service GmbH, is a German precast concrete manufacturer headquartered in Berching, Bavaria. The c…
Finnchain Oy is a Finnish mechanical equipment manufacturer founded in 1982 and based in Rauma, southwest Finland. The company has delivered over 3,50…
Fontana R, s.r.o. produces mechanical equipment for wastewater treatment plants at its own factory complex in Ricany u Brna, Czech Republic. Establish…
Ford Hall Company, Inc., founded in 1989 and headquartered in Richmond, Kentucky, designs and manufactures the Weir-Wolf automated brush cleaning syst…
Fraccaroli & Balzan S.p.A. is an Italian manufacturer founded in 1969 in Pescantina, Verona, by Tiziano Fraccaroli and Carlo Balzan. With over 8,000 p…
Friedrich Krumme GmbH, based in Bad Hersfeld, Germany, has over 35 years of experience specializing in stainless steel scraper track systems and speci…
G-H Systems, Inc. is a Georgetown, Texas-based provider of custom engineered water and wastewater treatment plants and proprietary process equipment, …
GKD Gebr. Kufferath AG, founded in 1925 by Josef Kufferath in Düren, Germany, is a fourth-generation family-owned technology leader in technical woven…
Gradiant is a global water treatment solutions provider that originated as an MIT spinout and now operates across semiconductor manufacturing, pharmac…
Greasezilla, operated by Downey Ridge Environmental and headquartered in West Virginia, manufactures turnkey FOG (Fats, Oils, and Grease) and UCO (Use…
Grimmel Wassertechnik GmbH is a family-owned German engineering firm headquartered in Ober-Mörlen, approximately 30 km north of Frankfurt, specializin…
Guardian Environmental Products, operating under the brand GuardWater, is a manufacturer of capital equipment for the water and wastewater industry he…
HABA-Beton Johann Bartlechner KG is a German precast concrete manufacturer serving underground civil engineering and water infrastructure markets acro…
Founded in 1981 and headquartered in Meschede, Germany, HST Systemtechnik employs approximately 215 people across four locations including a dedicated…
Haase Tank GmbH, based in Großröhrsdorf near Dresden, Germany, has manufactured glass fiber reinforced plastic (GRP) separators and tanks for water an…
Heron Innovators, established in 1998 and based in California's Central Valley, is the manufacturer of Suspended Air Flotation (SAF) technology—a prop…
Herrenknecht Separations, a division of Herrenknecht AG based in Schwanau, Germany, delivers integrated separation technology and water treatment solu…
Hewitech is a family-owned German manufacturer operating from Billerbeck, North Rhine-Westphalia, with over three decades of experience producing plas…
Hybag Automationen AG, founded in 1973 and headquartered in Linden (Bern), Switzerland, manufactures organic waste processing systems and automation e…
Infilco Degremont, based in Richmond, Virginia, is a water treatment equipment manufacturer operating as part of Degremont Technologies, the equipment…
Innovatek is a Turkish engineering and manufacturing company based in Gebze, Kocaeli, founded by experienced wastewater treatment engineers to deliver…
JDV Equipment Corporation is a New Jersey-based manufacturer that has designed and built process equipment for water, wastewater, industrial, and agri…
JWC Environmental (JWCE), operating as a Sulzer brand since its acquisition, has manufactured wastewater screening, grinding, and solids reduction equ…
KEMEO BV is a Netherlands-based dissolved air flotation specialist headquartered in Hilversum, with over 30 years of experience and ISO 9001 certifica…
KMU LOFT Cleanwater SE, based in Kirchentellinsfurt, Germany with an office in Lörrach, has delivered over 2,800 vacuum evaporation systems across 60 …
Headquartered in Eresing, Germany and operating for over four decades under Managing Director Georg Klass junior, Klass Filter GmbH engineers continuo…
Krone Filter Solutions GmbH, headquartered in Oyten near Hamburg, Germany, is a global manufacturer of automatic filter systems, backflush filters, ba…
Kruger, the North American arm of Veolia Water Technologies, provides a comprehensive portfolio of proprietary water and wastewater treatment processe…
Founded in 1964 in Nagold, Germany, KUGLER Behälter und Anlagenbau GmbH specializes in solid-liquid separation and sludge dewatering equipment with ov…
Kusters Water, operating under Zima Corporation (part of the Jagenberg Group), is an ISO 9001:2015 certified manufacturer of headworks, clarification,…
LK Metallwaren GmbH, headquartered in Schwabach (Mittelfranken) and Weißandt-Gölzau (Anhalt), Germany, celebrates its 50th anniversary in 2026 as a ma…
Labkotec Oy, founded in 1964 and headquartered in Pirkkala, Finland, is a measurement technology manufacturer and subsidiary of the Indutrade Group th…
Legacy Watercare Innovations distributes VTA Group wastewater treatment products and designs fluid treatment systems for municipal wastewater and indu…
Molded Fiber Glass Construction and Water Products (MFG CWP), an employee-owned company under the Molded Fiber Glass Companies umbrella with over 75 y…
MKR Metzger GmbH, headquartered in Monheim, Bavaria, Germany, manufactures industrial wastewater treatment and process water recycling systems under t…
MMI Tank and Industrial Services, headquartered at 3240 S. 37th Ave in Phoenix, Arizona, operates from an eight-acre fabrication plant and serves elev…
Maxco Chain Ltd is an American industrial chain manufacturer established in 1987, operating from service centers in Marietta, Georgia, and Sherwood, O…
Monroe Environmental, founded in 1971 and headquartered in Monroe, Michigan, is a family-owned manufacturer providing custom-engineered air pollution …
Mass Transfer Systems (MTS), operating since 1984 from Walpole, Massachusetts, designs and manufactures jet aeration and jet mixing systems for munici…
NEFCO Systems, founded in the late 1980s in Stamford, Connecticut and now headquartered in Palm Beach Gardens, Florida, engineers and manufactures fib…
Napier-Reid, an Axius Water company, has delivered engineered water and wastewater treatment solutions for over 70 years, serving municipalities and i…
NavoTech Inżynieria Środowiska is a Polish manufacturer of polyethylene equipment for the water and sewage industry, operating with 100% Polish capita…
NEFCO is a manufacturer of fiberglass reinforced plastic (FRP) products for water and wastewater treatment, founded in the late 1980s in Stamford, Con…
Nijhuis Saur Industries (NSI), operating under the Saur Group, is a multinational water and wastewater technology provider with over 7,000 reference i…
Nordic Water, a Sulzer brand established in 1961 and headquartered in Mölndal, Sweden, manufactures mechanical separation, filtration, and pumping equ…
Nordic Water, a Sulzer brand established in 1961, develops and manufactures water treatment equipment from its headquarters at Alfagatan 5 in Molndal,…
Plasti-Fab, operating as a brand within NOV's Fiber Glass Systems division based in Tualatin, Oregon, manufactures fiberglass-reinforced plastic (FRP)…
Founded in 2001 and based in Merelbeke, Belgium, Novotec BV is an engineering firm that designs and builds custom sludge and wastewater treatment inst…
OKO-tech GmbH & Co. KG, based in Hessisch Oldendorf, Germany, engineers and builds customized industrial wastewater treatment plants with a vendor-neu…
OKO-tech GmbH and Co. KG, based in Hessisch Oldendorf, Germany, is a system provider for custom industrial wastewater treatment plants that distinguis…
OZ SEPA Inc., headquartered in Seoul, South Korea, develops and manufactures nano-structured membrane systems for direct oil-water separation under th…
Ovivo is a global water treatment company with over 150 years of accumulated expertise, offering equipment, technology, and complete systems for produ…
PFTechnology Sp. z o.o., established in 1998 and headquartered in Wierzbica, Poland, holds ISO 9001:2008 certification for its design and manufacture …
Paques Technology B.V., founded in 1981 in Balk, Netherlands and now part of Skion Water, is a global leader in biological wastewater and biogas treat…
Parkson Corporation, a subsidiary of Axel Johnson Inc., is a US-based manufacturer offering one of the broadest water and wastewater treatment equipme…
Passavant-Geiger GmbH, headquartered in Aarbergen near Frankfurt am Main and employing approximately 300 people, operates under the three brands Passa…
Pieralisi is an Italian manufacturer of centrifugal separation and extraction equipment with a history spanning over 130 years and more than 41,500 in…
Premier Tech Aqua, operating under the Rewatec brand, is a division of Premier Tech specializing in decentralized water and wastewater treatment syste…
PROBIG high tech products GmbH, headquartered in Haid/Vöcklamarkt, Austria, is a global manufacturer of non-metallic chain and flight scraper systems …
PEWE (Process Engineered Water Equipment), offered by Greensprings Group Inc., designs, manufactures, constructs, and warranties industrial and munici…
Protectolite Composites Inc., headquartered in North York, Ontario, Canada, is a manufacturer of engineered fiberglass reinforced plastic (FRP) compos…
Pureco Ltd. is a 100% Hungarian-owned international water management company with more than 10 subsidiaries operating across 20-plus countries on four…
Lakeside Equipment Corporation, headquartered in Bartlett, Illinois and operating continuously since 1928, provides equipment across virtually every s…
Sentry Equipment is a 100% employee-owned manufacturer headquartered in Oconomowoc, Wisconsin — recognized as a USA TODAY Top Places to Work for 2026 …
Röser Vertriebs GmbH, part of the Röser Group based in Baden-Württemberg, Germany, manufactures reinforced concrete precast elements for underground i…
SEFT SRL fabricates mechanical wastewater treatment equipment at a 4,000-square-meter plant in San Felice sul Panaro, in Italy's Modena province. Foun…
SEMEO, founded in 2011 and headquartered in Bréal-sous-Vitré, France, is the mobile effluent and sludge treatment specialist within the SEMOSIA Group,…
SIDERURGICA DEL POLESINE SRL (Siderpol), established over 50 years ago and based in Rovigo, Italy, is a manufacturer of electromechanical equipment fo…
SUEZ, with over 160 years of water industry experience, operates North American headquarters in the Chicago area as part of the global SUEZ Group head…
Founded in 1983 and based in Kirchberg an der Jagst, Germany, SYSTEM S&P GmbH is a family-owned manufacturer specializing in compact wastewater treatm…
Saveco appears in industry line cards and trade listings as a water and wastewater equipment supplier. Company details are pending verification — if t…
Schreiber LLC, headquartered in Trussville, Alabama, has been a wastewater treatment equipment manufacturer since the late 1970s, with over 2,000 inst…
Selip S.P.A. appears in industry line cards and trade listings as a water and wastewater equipment supplier. Company details are pending verification …
Simatec Maschinenbau AG is a Swiss machinery manufacturer based in Horw, founded in 2014, specializing in customized chamber filter presses and comple…
Sismat Uluslararasi (Sismat Uluslararasi Arıtma Makinaları İnşaat Mühendislik A.Ş.) is a Turkish manufacturer headquartered in Gebze/Kocaeli near Ista…
Skim-pak manufactures surface liquid skimmers and decanting equipment from its manufacturing and warehouse facility at 2008 National Avenue in Hayward…
Skim-pak, based in Hayward, California, manufactures a specialized line of surface liquid skimmers and decanting equipment for the water, wastewater, …
Terson Sp. z o.o. is a Polish power transmission components manufacturer based near Legnica, recognized as one of the world's largest producers of cha…
Toro Equipment S.L., established in 1990 and headquartered in Valladolid, Spain, manufactures corrosion-resistant water and wastewater treatment equip…
JSC Traidenis, founded in 1996 in Alytus, Lithuania, was the first Lithuanian company to manufacture wastewater treatment plants from glass-reinforced…
Tenco Hydro, founded in 1971 and based in Sugar Grove, Illinois, is an OEM solutions company that has been designing, fabricating, and supplying waste…
Tongxiang Small Boss Special Plastic Products Co., Ltd. is a Chinese manufacturer founded in 1992 and headquartered in Tongxiang, Zhejiang Province. R…
Trepovi S.L. is a Spanish manufacturer founded in 1995 in Solsona, Catalonia, operating from an 18,000 m² facility with over 40 employees. The company…
Tschuda GmbH, based near Graz, Austria, has manufactured mechanical scraper systems for wastewater treatment since 1995, with company roots tracing to…
Twincad S.r.l., based in Costa di Rovigo, Italy, designs and manufactures machines and complete turnkey plants for water and wastewater treatment, alo…
UAB ENEKA, established in 1998 and headquartered in Kaunas, Lithuania, is a manufacturer of wastewater treatment equipment and rotationally molded pol…
UFT Umwelt- und Fluid-Technik Dr. H. Brombach GmbH, founded in 1977 by Dr. Hansjörg Brombach in Bad Mergentheim, Germany, specializes in stormwater ma…
UIT GmbH Dresden is a German engineering and plant construction firm specializing in industrial water and wastewater treatment, with over 35 years of …
Veolia Water Technologies is the water treatment arm of Veolia, the global resource management company, offering a portfolio of proprietary treatment …
Connexus Industries is a diversified industrial manufacturing company uniting four brands: Viking Chains, RENS-Metal Shark, I'ANCO, and Lacey-Harmer I…
Founded in 1975 and headquartered in Iowa, Vulcan Industries designs and fabricates customized wastewater screening, screenings handling, grit handlin…
W&W Fiberglass Tank, established in May 1978, operates four manufacturing facilities across Pampa, Texas (corporate headquarters and steel division), …
WD Klärtechnik GmbH, headquartered in Rheine with a second production facility in Dessau-Roßlau, Germany, is an engineering and manufacturing company …
WTP Equipment Corp has manufactured mechanical wastewater treatment equipment since 1997, specializing in headworks screening, grit removal, clarifica…
Walker Process Equipment, a division of McNish Water with over 60 years in the wastewater treatment industry, designs and manufactures engineered proc…
Walker Process Equipment, based in Aurora, Illinois, has manufactured engineered wastewater treatment equipment since 1946 and is now a division of Mc…
WesTech Engineering, LLC, now operating under the Swire Water group, is a large-scale manufacturer of water and wastewater treatment equipment and liq…
WesTech Engineering, now affiliated with Swire Water, is a major manufacturer of water and wastewater treatment equipment offering one of the industry…
World Water Works (WWW) is a wastewater treatment technology company headquartered in Oklahoma City, Oklahoma, specializing in biological nutrient rem…
bgu-Umweltschutzanlagen GmbH, established in 1979 and headquartered in Bretzfeld, Germany, designs, manufactures, installs, and maintains equipment fo…
hydrograv GmbH, founded in 2004 as a spin-off from the Karlsruhe Institute of Technology and Technical University of Dresden, applies computational fl…
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