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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
Thornville WWTP & Sewer SystemThornville0.4 MGD (million gallons per day)2022
Tiltonsville WWTP & Sewer SystemTiltonsville0.4 MGD (million gallons per day)2022
CHEROKEE WWTCherokee0.4 MGD (million gallons per day)2022
MULDROW UA WWTMuldrow0.4 MGD (million gallons per day)2022
SPENCER WWTSpencer0.4 MGD (million gallons per day)2022
MANGUM WWTMangum0.4 MGD (million gallons per day)2022
BLANCHARD WWTBlanchard0.4 MGD (million gallons per day)2022
NETARTS-OCEANSIDE SANITARY DISTRICTOceanside0.4 MGD (million gallons per day)2022
PACIFIC CITY STPPacific City0.4 MGD (million gallons per day)2022
FREEDOM SEWAGE SYSDuncansville0.4 MGD (million gallons per day)2022
MIFFLINBURG WWTFMifflinburg0.4 MGD (million gallons per day)2022
MCCANDLESS TWP - A&B STPPittsburgh0.4 MGD (million gallons per day)2022
ROSTRAVER TWP - POLLOCK RUN STPBelle Vernon0.4 MGD (million gallons per day)2022
REYNOLDSVILLE STPReynoldsville0.4 MGD (million gallons per day)2022
Chamberlain Sanitary Sewer CollectionChamberlain0.4 MGD (million gallons per day)2022
ALAMO STPAlamo0.4 MGD (million gallons per day)2022
BENTON WWTPBenton0.4 MGD (million gallons per day)2022
Berry's Chapel Utility DistrictFranklin0.4 MGD (million gallons per day)2022
COWAN STPCowan0.4 MGD (million gallons per day)2022
NIOTA STPNiota0.4 MGD (million gallons per day)2022
SIGNAL MOUNTAIN STPChattanooga0.4 MGD (million gallons per day)2022
Harris Co MUD #216 WWTPHouston0.4 MGD (million gallons per day)2022
Rio Hondo WWTPRio Hondo0.4 MGD (million gallons per day)2022
Progreso WWTPProgreso0.4 MGD (million gallons per day)2022
Rancho Viejo WWTPOlmito0.4 MGD (million gallons per day)2022
Three Rivers WWTPThree Rivers0.4 MGD (million gallons per day)2022
Harris Co MUD #360 WWTPHouston0.4 MGD (million gallons per day)2022
East Bernard WWTPEast Bernard0.4 MGD (million gallons per day)2022
Caney Creek WWTPBay City0.4 MGD (million gallons per day)2022
NW Harris Co MUD #32 WWTPSpring0.4 MGD (million gallons per day)2022
Whitney WWTPWhitney0.4 MGD (million gallons per day)2022
Liberty Hill WWTPLiberty Hill0.4 MGD (million gallons per day)2022
Aubrey WWTPAubrey0.4 MGD (million gallons per day)2022
Krum WWTPKrum0.4 MGD (million gallons per day)2022
Mabank WWTPMabank0.4 MGD (million gallons per day)2022
Alto WWTPAlto0.4 MGD (million gallons per day)2022
Malakoff WWTPMalakoff0.4 MGD (million gallons per day)2022
Kountze WWTPKountze0.4 MGD (million gallons per day)2022
SHEPHERD STPShepherd0.4 MGD (million gallons per day)2022
Timpson WWTPTimpson0.4 MGD (million gallons per day)2022
Needville WWTPNeedville0.4 MGD (million gallons per day)2022
Bayou Vista WWTPHitchcock0.4 MGD (million gallons per day)2022
Ellsbeth WWTPChannelview0.4 MGD (million gallons per day)2022
Fonmeadow WWTPHouston0.4 MGD (million gallons per day)2022
PANORAMA VILLAGE STPConroe0.4 MGD (million gallons per day)2022
South - Addicks UDHouston0.4 MGD (million gallons per day)2022
Hunters Glen WWTPHouston0.4 MGD (million gallons per day)2022
Fairwood WWTPCypress0.4 MGD (million gallons per day)2022
Autumn Meadow Lane WWTPHouston0.4 MGD (million gallons per day)2022
Timberlake WWTPHouston0.4 MGD (million gallons per day)2022
Llano WWTPLlano0.4 MGD (million gallons per day)2022
KAMASKamas0.4 MGD (million gallons per day)2022
HUNTINGTONCastle Dale0.4 MGD (million gallons per day)2022
MONAMona0.4 MGD (million gallons per day)2022
BEAR LAKE SSDGarden City0.4 MGD (million gallons per day)2022
WOLF CREEKEden0.4 MGD (million gallons per day)2022
Randolph WWTFRandolph0.4 MGD (million gallons per day)2022
HONAKER WWTP & Collection SystemHonaker0.4 MGD (million gallons per day)2022
SHENANDOAH STPShenandoah0.4 MGD (million gallons per day)2022
FERRUM STPFerrum0.4 MGD (million gallons per day)2022
INDEPENDENCE WWTP & Coll. SystemIndependence0.4 MGD (million gallons per day)2022
GROTTOES STPGrottoes0.4 MGD (million gallons per day)2022
MIDDLETOWN STPMiddletown0.4 MGD (million gallons per day)2022
Duffield WWTP & Collection SystemDuffield0.4 MGD (million gallons per day)2022
Mercer Co PSDMatoaka0.4 MGD (million gallons per day)2022
BLUEWELL PSD WWTP 2Rock0.4 MGD (million gallons per day)2022
BUFFALO WWTP #2Buffalo0.4 MGD (million gallons per day)2022
BLUEWELL PSD - MONTCALM WWTPRock0.4 MGD (million gallons per day)2022
PHILIPPI WWTPPhilippi0.4 MGD (million gallons per day)2022
PHILIPPI - TYGART GLEN WWTPPhilippi0.4 MGD (million gallons per day)2022
ALDERSON WWTPAlderson0.4 MGD (million gallons per day)2022
CHAPMANVILLE WWTPChapmanville0.4 MGD (million gallons per day)2022
NEW HAVEN WWTPNew Haven0.4 MGD (million gallons per day)2022
BLUEWELL PSD WWTPBluefield0.4 MGD (million gallons per day)2022
PARSONS WWTPParsons0.4 MGD (million gallons per day)2022
MINERAL WELLS PSDMineral Wells0.4 MGD (million gallons per day)2022
WILLIAMSTOWN WWTPWilliamstown0.4 MGD (million gallons per day)2022
CENTER WWTPPineville0.4 MGD (million gallons per day)2022
Pulaski WWTPPulaski0.4 MGD (million gallons per day)2022
AMERY STPAmery0.4 MGD (million gallons per day)2022
CEDAR GROVE STPCedar Grove0.4 MGD (million gallons per day)2022
COLBY WWTPColby0.4 MGD (million gallons per day)2022
CUMBERLAND WWTPCumberland0.4 MGD (million gallons per day)2022
Luxemburg - CSLuxemburg0.4 MGD (million gallons per day)2022
EAGLE LAKE UD #1 - STPKansasville0.4 MGD (million gallons per day)2022
DUBOIS LAGOONDubois0.4 MGD (million gallons per day)2022
ALPINE WWTPAlpine0.4 MGD (million gallons per day)2022
FONTANELLE STLFontanelle0.398 MGD (million gallons per day)2022
ORFORDVILLE STPOrfordville0.398 MGD (million gallons per day)2022
ST. CROIX FALLS STPSaint Croix Falls0.398 MGD (million gallons per day)2022
EAST GULL LAKE WWTFPillager0.396 MGD (million gallons per day)2022
CASSVILLE STPCassville0.396 MGD (million gallons per day)2022
CORNELL STPCornell0.395 MGD (million gallons per day)2022
DEERFIELD STPDeerfield0.393 MGD (million gallons per day)2022
PRINCETON WWTPPrinceton0.392 MGD (million gallons per day)2022
PRESTON WWTPPreston0.392 MGD (million gallons per day)2022
BALDWIN STPBaldwin0.392 MGD (million gallons per day)2022
McCrory WWTPMc Crory0.39 MGD (million gallons per day)2022
SALIDA TRTMNT PLANTSalida0.39 MGD (million gallons per day)2022
ASSUMPTION STPAssumption0.39 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.