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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in the United States

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All countries

17,009 inventory records · EPA Clean Watersheds Needs Survey 2022

Data years: 2022. The inventory date does not establish current operation.

States

17,009 results

CompareNameNative sizeYear
ROCK ISLAND STP SWRock Island1.5 MGD (million gallons per day)2022
GENESEO STPGeneseo1.5 MGD (million gallons per day)2022
CAIRO STPCairo1.5 MGD (million gallons per day)2022
CARLINVILLE STPCarlinville1.5 MGD (million gallons per day)2022
Cortland, Town ofCortland1.5 MGD (million gallons per day)2022
EDINBURGH WWTPEdinburgh1.5 MGD (million gallons per day)2022
CHESTERTON WWTPChesterton1.5 MGD (million gallons per day)2022
HUNTERTOWN WWTPHuntertown1.5 MGD (million gallons per day)2022
LIGONIER WWTPLigonier1.5 MGD (million gallons per day)2022
DELPHI WWTPDelphi1.5 MGD (million gallons per day)2022
CUMBERLAND WWTPIndianapolis1.5 MGD (million gallons per day)2022
UNION CITY WWTPUnion City1.5 MGD (million gallons per day)2022
CENTERVILLE NE WWTPCenterville1.5 MGD (million gallons per day)2022
EMMETSBURG WWTPEmmetsburg1.5 MGD (million gallons per day)2022
AUGUSTA WWTPAugusta1.5 MGD (million gallons per day)2022
BARBOURVILLE WWTPBarbourville1.5 MGD (million gallons per day)2022
MARION STPMarion1.5 MGD (million gallons per day)2022
OCEA - Ohio River WWTPGoshen1.5 MGD (million gallons per day)2022
GRAMBLING STPGrambling1.5 MGD (million gallons per day)2022
LAFAYETTE - NORTHEAST OXID PONDLafayette1.5 MGD (million gallons per day)2022
RAYVILLE STPRayville1.5 MGD (million gallons per day)2022
SPRINGHILL, TOWN OFSpringhill1.5 MGD (million gallons per day)2022
WALKER STPWalker1.5 MGD (million gallons per day)2022
RAYNE STPRayne1.5 MGD (million gallons per day)2022
ST. MARTINVILLE STPSaint Martinville1.5 MGD (million gallons per day)2022
HARTLAND TREATMENT PLANTHartland1.5 MGD (million gallons per day)2022
HOULTON WPCFHoulton1.5 MGD (million gallons per day)2022
LA PLATA WWTPLa Plata1.5 MGD (million gallons per day)2022
DAMASCUS WWTPGaithersburg1.5 MGD (million gallons per day)2022
Warren Sewerage Collection System and WWTFWest Warren1.5 MGD (million gallons per day)2022
GRAND LEDGE WWTPGrand Ledge1.5 MGD (million gallons per day)2022
MASON WWTPMason1.5 MGD (million gallons per day)2022
GREENVILLE STPGreenville1.5 MGD (million gallons per day)2022
BUCHANAN STPBuchanan1.5 MGD (million gallons per day)2022
MANISTIQUE WWTPManistique1.5 MGD (million gallons per day)2022
HILLSDALE SEWAGE PLANTHillsdale1.5 MGD (million gallons per day)2022
ST. IGNACE STPSaint Ignace1.5 MGD (million gallons per day)2022
ELY WWTPEly1.5 MGD (million gallons per day)2022
LUVERNE WWTPLuverne1.5 MGD (million gallons per day)2022
GUNTOWN POTWGuntown1.5 MGD (million gallons per day)2022
Warrensburg W WWTPWarrensburg1.5 MGD (million gallons per day)2022
Warrensburg East WWTPWarrensburg1.5 MGD (million gallons per day)2022
Sullivan WWTPSullivan1.5 MGD (million gallons per day)2022
Union LagoonUnion1.5 MGD (million gallons per day)2022
Charleston WWTP (SERO)Charleston1.5 MGD (million gallons per day)2022
Carrollton WWTPCarrollton1.5 MGD (million gallons per day)2022
Butler WWTPButler1.5 MGD (million gallons per day)2022
PCSD#1, Weeks Hollow WWTFSaint Robert1.5 MGD (million gallons per day)2022
Marshfield WWTPMarshfield1.5 MGD (million gallons per day)2022
BLAIR WWTPBlair1.5 MGD (million gallons per day)2022
ELY WWTFEly1.5 MGD (million gallons per day)2022
ROLLING A WWTFDayton1.5 MGD (million gallons per day)2022
North Conway WWTFNorth Conway1.5 MGD (million gallons per day)2022
Littleton WWTFLittleton1.5 MGD (million gallons per day)2022
New Providence Borough - CS/STPNew Providence1.5 MGD (million gallons per day)2022
SILVER CITY, STPSilver City1.5 MGD (million gallons per day)2022
Deming, City ofDeming1.5 MGD (million gallons per day)2022
Great Neck (V) STPGreat Neck1.5 MGD (million gallons per day)2022
Greater Atlantic Beach W.Recl. DistAtlantic Beach1.5 MGD (million gallons per day)2022
Cornwall (T) Joint T/V STPCornwall1.5 MGD (million gallons per day)2022
Cornwall-on-Hudson (V) SewersCornwall On Hudson1.5 MGD (million gallons per day)2022
Yorktown (T) WWTP & Collection SystemYorktown Heights1.5 MGD (million gallons per day)2022
Rotterdam (T) WWTP & Collection System ImprovementsSchenectady1.5 MGD (million gallons per day)2022
Dannemora (V) STPDannemora1.5 MGD (million gallons per day)2022
Waterford (T) WWTP & Collection SystemWaterford1.5 MGD (million gallons per day)2022
Geneseo (V) WWTPGeneseo1.5 MGD (million gallons per day)2022
BEAUFORT WWTP & COLL. SYSBeaufort1.5 MGD (million gallons per day)2022
CONOVER NORTHEAST WWTPConover1.5 MGD (million gallons per day)2022
ANDREWS WWTPAndrews1.5 MGD (million gallons per day)2022
SPRING LAKE WWTPSpring Lake1.5 MGD (million gallons per day)2022
COOLEEMEE WWTPCooleemee1.5 MGD (million gallons per day)2022
HIGHLANDS WWTPHighlands1.5 MGD (million gallons per day)2022
Northwest Regional WRFRichlands1.5 MGD (million gallons per day)2022
PILOT MOUNTAIN WWTPPilot Mountain1.5 MGD (million gallons per day)2022
Allen Co American Bath WWTPLima1.5 MGD (million gallons per day)2022
Aurora Central WWTP & SewersAurora1.5 MGD (million gallons per day)2022
Aurora Westerly WWTP & SewersAurora1.5 MGD (million gallons per day)2022
Belpre WWTP & Sewer SystemBelpre1.5 MGD (million gallons per day)2022
Canal Fulton WWTP & Sewer SystemCanal Fulton1.5 MGD (million gallons per day)2022
Grafton WWTP & Sewer SystemGrafton1.5 MGD (million gallons per day)2022
Hebron WWTP & Sewer SystemHebron1.5 MGD (million gallons per day)2022
Hillsboro WWTP & Sewer SystemHillsboro1.5 MGD (million gallons per day)2022
Lexington WWTP & Sewer SystemMansfield1.5 MGD (million gallons per day)2022
Newton Falls WWTP & Sewer SystemNewton Falls1.5 MGD (million gallons per day)2022
Oberlin WWTP & Sewer SystemOberlin1.5 MGD (million gallons per day)2022
Sebring WWTP & Sewer SystemSebring1.5 MGD (million gallons per day)2022
Wauseon WWTP & Sewer SystemWauseon1.5 MGD (million gallons per day)2022
SULPHUR WWTSulphur1.5 MGD (million gallons per day)2022
STILWELL ADA WWTStilwell1.5 MGD (million gallons per day)2022
MUSTANG WWTMustang1.5 MGD (million gallons per day)2022
VINITA WWTVinita1.5 MGD (million gallons per day)2022
NORTH COVENTRY MUN AUTHPottstown1.5 MGD (million gallons per day)2022
NORTHAMPTON BORO STPNorthampton1.5 MGD (million gallons per day)2022
PINE GROVE STPPine Grove1.5 MGD (million gallons per day)2022
SLATINGTON BORO STPSlatington1.5 MGD (million gallons per day)2022
KUTZTOWN BORO STPKutztown1.5 MGD (million gallons per day)2022
BADEN BORO STPBaden1.5 MGD (million gallons per day)2022
Tiadaghton Valley MA - WW Treatment and Conveyance SystemJersey Shore1.5 MGD (million gallons per day)2022
Burrillville Sewer CommissionOakland1.5 MGD (million gallons per day)2022
HARRIMAN WWTPHarriman1.5 MGD (million gallons per day)2022

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

  • Permit identifier and permitting authority: EPA or an authorized state.
  • Outfall and receiving water; sewer connections follow a different control route.
  • Current permit conditions, limits and dated measurements; these are not included in CWNS.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.