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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
MARIANNA WWTPMarianna4 MGD (million gallons per day)2022
Clermont East WWTFClermont4 MGD (million gallons per day)2022
STUART WRFStuart4 MGD (million gallons per day)2022
Brunswick-Glynn County St. Simons Island Dunbar Creek WPCPSaint Simons Island4 MGD (million gallons per day)2022
Travis Field WRPSavannah4 MGD (million gallons per day)2022
Athens Cedar Creek WRPAthens4 MGD (million gallons per day)2022
Moultrie WPCPMoultrie4 MGD (million gallons per day)2022
Canton WPCPCanton4 MGD (million gallons per day)2022
Ellijay WPCPEllijay4 MGD (million gallons per day)2022
Washington WPCPWashington4 MGD (million gallons per day)2022
Point Peter WPCPSaint Marys4 MGD (million gallons per day)2022
Winder Cedar Cr WPCPWinder4 MGD (million gallons per day)2022
COEUR D ALENE S/T PLANTCoeur D Alene4 MGD (million gallons per day)2022
OTTAWA WWTP & Collection SystemOttawa4 MGD (million gallons per day)2022
STREATOR STPStreator4 MGD (million gallons per day)2022
LIBERTYVILLE STPLibertyville4 MGD (million gallons per day)2022
McHenry South WWTPMchenry4 MGD (million gallons per day)2022
GREENFIELD STPGreenfield4 MGD (million gallons per day)2022
PLAINFIELD STPPlainfield4 MGD (million gallons per day)2022
LOWELL WWTPLowell4 MGD (million gallons per day)2022
WABASH WWTPWabash4 MGD (million gallons per day)2022
INDEPENDENCE WWTPIndependence4 MGD (million gallons per day)2022
MOUNT PLEASANT WWTPMount Pleasant4 MGD (million gallons per day)2022
HENDERSON STP#2 & CSRobards4 MGD (million gallons per day)2022
N KY SD1 - EASTERN REGIONAL STPAlexandria4 MGD (million gallons per day)2022
PIKEVILLEPikeville4 MGD (million gallons per day)2022
BARDSTOWN--JERRY L RILEY STPBardstown4 MGD (million gallons per day)2022
Hardin Co Water District 1-RadcliffRadcliff4 MGD (million gallons per day)2022
LAFAYETTE - EAST SEWAGE PLANTLafayette4 MGD (million gallons per day)2022
ABERDEEN WWTPAberdeen4 MGD (million gallons per day)2022
EASTON WWTPEaston4 MGD (million gallons per day)2022
Conococheague WWTPWilliamsport4 MGD (million gallons per day)2022
Nantucket Sewerage Collection System and WWTFNantucket4 MGD (million gallons per day)2022
DELHI TWP WWTPHolt4 MGD (million gallons per day)2022
IONIA STPIonia4 MGD (million gallons per day)2022
ALBION WWTPAlbion4 MGD (million gallons per day)2022
RED WING WWTPRed Wing4 MGD (million gallons per day)2022
WORTHINGTON WWTPWorthington4 MGD (million gallons per day)2022
ST PETER WWTPSaint Peter4 MGD (million gallons per day)2022
Desoto County Regional Utility Authority - Short Fork POTWHernando4 MGD (million gallons per day)2022
Canton Mun Util-Beatties Bluff WWTFCanton4 MGD (million gallons per day)2022
Kirksville WWTPKirksville4 MGD (million gallons per day)2022
Washington WWTPWashington4 MGD (million gallons per day)2022
Nixa WWTPNixa4 MGD (million gallons per day)2022
KEARNEY WWTPKearney4 MGD (million gallons per day)2022
Lower Township MUA - CS/STPVillas4 MGD (million gallons per day)2022
Mount Laurel Township MUA - CS/STPMount Laurel4 MGD (million gallons per day)2022
ALAMOGORDO STPAlamogordo4 MGD (million gallons per day)2022
North Hempstead (T) Port Washington WPCDPort Washington4 MGD (million gallons per day)2022
Poughkeepsie (T) Arlington STPPoughkeepsie4 MGD (million gallons per day)2022
Wallkill (T) Sewers & STPMiddletown4 MGD (million gallons per day)2022
Oneonta (C) Sewers & WWTPOneonta4 MGD (million gallons per day)2022
West Carthage (V) Joint STPCarthage4 MGD (million gallons per day)2022
Oswego (C) West Side STPOswego4 MGD (million gallons per day)2022
Farmington (T) STP & San SewersFarmington4 MGD (million gallons per day)2022
Hornell (C) WPCPHornell4 MGD (million gallons per day)2022
SILER CITY WWTPSiler City4 MGD (million gallons per day)2022
MT. HOLLY WWTPMount Holly4 MGD (million gallons per day)2022
CRAMERTON WWTPCramerton4 MGD (million gallons per day)2022
THIRD CREEK WWTPStatesville4 MGD (million gallons per day)2022
Melinda B Kroerzer WWTPWilmington4 MGD (million gallons per day)2022
LEITH CREEK WWTPLaurinburg4 MGD (million gallons per day)2022
Trumbull Co Meander Creek WWTPMineral Ridge4 MGD (million gallons per day)2022
Circleville WWTP & Sewer SystemCircleville4 MGD (million gallons per day)2022
Marietta WWTP & Sewer SystemMarietta4 MGD (million gallons per day)2022
Salem WWTP & Sewer SystemSalem4 MGD (million gallons per day)2022
Springboro WWTP & Sewer SystemSpringboro4 MGD (million gallons per day)2022
Summit Co Upper Tuscarawas WWTP #36Akron4 MGD (million gallons per day)2022
Tiffin WWTP & Sewer SystemTiffin4 MGD (million gallons per day)2022
Van Wert WWTP & Sewer SystemVan Wert4 MGD (million gallons per day)2022
Wapakoneta WWTP & Sewer SystemWapakoneta4 MGD (million gallons per day)2022
Xenia Glady Run WWTP & SewersXenia4 MGD (million gallons per day)2022
OAK LODGE STPPortland4 MGD (million gallons per day)2022
SANDY STPBoring4 MGD (million gallons per day)2022
GRANTS PASS STPGrants Pass4 MGD (million gallons per day)2022
DOVER TWP STPDover4 MGD (million gallons per day)2022
LITTLE PEE DEE STPDillon4 MGD (million gallons per day)2022
WCRSA/GILDER CREEKSimpsonville4 MGD (million gallons per day)2022
JONES CREEK STPDickson4 MGD (million gallons per day)2022
KNOB CREEK STPJohnson City4 MGD (million gallons per day)2022
MCMINNVILLE WWTPMc Minnville4 MGD (million gallons per day)2022
Pulaski STPPulaski4 MGD (million gallons per day)2022
Texas A & M WWTPCollege Station4 MGD (million gallons per day)2022
San Juan WWTPSan Juan4 MGD (million gallons per day)2022
Pflugerville - Wilbarger Creek WWTPPflugerville4 MGD (million gallons per day)2022
CLUTE WWTPClute4 MGD (million gallons per day)2022
New Island WWTPPearland4 MGD (million gallons per day)2022
League City - South WWTPLeague City4 MGD (million gallons per day)2022
West District WWTP - BaytownBaytown4 MGD (million gallons per day)2022
New Northeast WWTPBaytown4 MGD (million gallons per day)2022
Homestead WWTPHouston4 MGD (million gallons per day)2022
White Oak WWTPHouston4 MGD (million gallons per day)2022
Imperial Valley WWTPHouston4 MGD (million gallons per day)2022
South Houston WWTPSouth Houston4 MGD (million gallons per day)2022
Southwest WWTP - DaytonDayton4 MGD (million gallons per day)2022
Quail Valley WWTPMissouri City4 MGD (million gallons per day)2022
SOUTH DAVIS SD - SOUTHNorth Salt Lake4 MGD (million gallons per day)2022
PRICE RIVER WIDPrice4 MGD (million gallons per day)2022
SNYDERVILLE WRD - EAST CANYONPark City4 MGD (million gallons per day)2022
Barre City WWTFBarre4 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.