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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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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
DIAMOND STPCoal City0.65 MGD (million gallons per day)2022
DENVER STLDenver0.65 MGD (million gallons per day)2022
KAPLAN STPKaplan0.65 MGD (million gallons per day)2022
EAST MILLINOCKET WWTFEast Millinocket0.65 MGD (million gallons per day)2022
PARIS UTILITY DIST W P CSouth Paris0.65 MGD (million gallons per day)2022
Provincetown Sewerage Collection System and WWTFProvincetown0.65 MGD (million gallons per day)2022
WILLIAMSTON WTPWilliamston0.65 MGD (million gallons per day)2022
HARBOR BEACH WWTPHarbor Beach0.65 MGD (million gallons per day)2022
GLADWIN TREATMENT PLANTGladwin0.65 MGD (million gallons per day)2022
HAWTHORNE WWTFHawthorne0.65 MGD (million gallons per day)2022
Long Hill Township - CS/STPStirling0.65 MGD (million gallons per day)2022
Greenport (V) STPGreenport0.65 MGD (million gallons per day)2022
Champlain (V) STPChamplain0.65 MGD (million gallons per day)2022
Granville (V) STPGranville0.65 MGD (million gallons per day)2022
Brownville (V) WWTPBrownville0.65 MGD (million gallons per day)2022
Pulaski (V) WWTPPulaski0.65 MGD (million gallons per day)2022
Alden (V) WWTPAlden0.65 MGD (million gallons per day)2022
Jonesville WWTPJonesville0.65 MGD (million gallons per day)2022
Atwood Regional WSDMineral City0.65 MGD (million gallons per day)2022
HEAVENER UA WWTHeavener0.65 MGD (million gallons per day)2022
PURCELL WWTPurcell0.65 MGD (million gallons per day)2022
SCAPPOOSE STPScappoose0.65 MGD (million gallons per day)2022
CRESSON BORO STPCresson0.65 MGD (million gallons per day)2022
DERRY BOROUGH STPDerry0.65 MGD (million gallons per day)2022
Huntingdon Hwy 22 LagoonHuntingdon0.65 MGD (million gallons per day)2022
CLAIBORNE-NEW TAZEWELL STPNew Tazewell0.65 MGD (million gallons per day)2022
CLAIBORNE CO UD STPNew Tazewell0.65 MGD (million gallons per day)2022
Laguna Madre WDPort Isabel0.65 MGD (million gallons per day)2022
Clifton WWTPClifton0.65 MGD (million gallons per day)2022
Columbus WWTPColumbus0.65 MGD (million gallons per day)2022
Devine WWTPDevine0.65 MGD (million gallons per day)2022
Ingram WWTPIngram0.65 MGD (million gallons per day)2022
Harris Co MUD #304Houston0.65 MGD (million gallons per day)2022
BOONE CO PSD - LITTLE COAL RIVER TPDanville0.65 MGD (million gallons per day)2022
GLENVILLE WWTPGlenville0.65 MGD (million gallons per day)2022
PARK FALLS WWTPPark Falls0.65 MGD (million gallons per day)2022
CANTON WPCFCanton0.646 MGD (million gallons per day)2022
FRAZEE WWTPFrazee0.646 MGD (million gallons per day)2022
Sommerall WWTPHouston0.645 MGD (million gallons per day)2022
Hebronville WWTPHebbronville0.643 MGD (million gallons per day)2022
Shannon Hills WWTPAlexander0.641 MGD (million gallons per day)2022
Miami WWTFMiami0.64 MGD (million gallons per day)2022
NEVADA CITY WWTFNevada City0.64 MGD (million gallons per day)2022
Center Sanitation DistrictCenter0.64 MGD (million gallons per day)2022
Sylvester LASSylvester0.64 MGD (million gallons per day)2022
KLEMME STLKlemme0.64 MGD (million gallons per day)2022
LIBERTY STPLiberty0.64 MGD (million gallons per day)2022
Camdenton WWTPCamdenton0.64 MGD (million gallons per day)2022
Sunapee WWTFSunapee0.64 MGD (million gallons per day)2022
Shawangunk (T)Wallkill SD STP& ISDSWallkill0.64 MGD (million gallons per day)2022
BEDFORD BORO STPBedford0.64 MGD (million gallons per day)2022
Electra WWTPElectra0.64 MGD (million gallons per day)2022
Timberwood WWTPHumble0.64 MGD (million gallons per day)2022
Harris Co MUD # 155 WWTPHouston0.64 MGD (million gallons per day)2022
POTEET WWTPPoteet0.64 MGD (million gallons per day)2022
PLAINS MARSHALL STPMarshall0.64 MGD (million gallons per day)2022
CADIZ STPCadiz0.636 MGD (million gallons per day)2022
REDMONDRedmond0.636 MGD (million gallons per day)2022
Westfield Center WWTP & SewersWestfield Center0.635 MGD (million gallons per day)2022
SELBYVILLE STPSelbyville0.634 MGD (million gallons per day)2022
Gosnell WWTPGosnell0.633 MGD (million gallons per day)2022
KINGWOOD WWTPKingwood0.633 MGD (million gallons per day)2022
IVANHOE WWTFIvanhoe0.63 MGD (million gallons per day)2022
Cuthbert PondCuthbert0.63 MGD (million gallons per day)2022
RUSHVILLE STWRushville0.63 MGD (million gallons per day)2022
BROOKLYN WWTPBrooklyn0.63 MGD (million gallons per day)2022
DE SOTO WWTPDe Soto0.63 MGD (million gallons per day)2022
Montgomery Township - Stage II CS/STPRocky Hill0.63 MGD (million gallons per day)2022
Williamson (T) WWTP & Collection SystemWilliamson0.63 MGD (million gallons per day)2022
ROBBINSVILLE WWTPRobbinsville0.63 MGD (million gallons per day)2022
Kenly WWTPKenly0.63 MGD (million gallons per day)2022
GTUA-Whitewright WWTPWhitewright0.63 MGD (million gallons per day)2022
Kleinbrook WWTPHouston0.63 MGD (million gallons per day)2022
Brookshire WWTPBrookshire0.63 MGD (million gallons per day)2022
HALL CREEK WWTP & COLLECTION SYS.Glade Spring0.63 MGD (million gallons per day)2022
JUNEAU WWTPJuneau0.63 MGD (million gallons per day)2022
GUERNSEY LAGOONHartville0.63 MGD (million gallons per day)2022
MELBOURNE WWTPMelbourne0.627 MGD (million gallons per day)2022
OREGON STPOregon0.626 MGD (million gallons per day)2022
EDDYVILLE WWTPEddyville0.626 MGD (million gallons per day)2022
GARNETT WWTP (South Site)Garnett0.625 MGD (million gallons per day)2022
CARTHAGE WWTPCarthage0.625 MGD (million gallons per day)2022
Champion Lake WWTPSpring0.625 MGD (million gallons per day)2022
HINTON WWTPHinton0.625 MGD (million gallons per day)2022
BELGIUM WWTPBelgium0.625 MGD (million gallons per day)2022
MILTON STPMilton0.625 MGD (million gallons per day)2022
LENOX WWTPLenox0.624 MGD (million gallons per day)2022
Klawock WWTPKlawock0.623 MGD (million gallons per day)2022
South WPCP (City of Forsyth)Forsyth0.622 MGD (million gallons per day)2022
WHEATLAND WWTFWheatland0.62 MGD (million gallons per day)2022
UnadillaUnadilla0.62 MGD (million gallons per day)2022
AUBURN STPAuburn0.62 MGD (million gallons per day)2022
BLAIRSTOWN WWTPBlairstown0.62 MGD (million gallons per day)2022
WISCASSET SEWAGE TREATMENTWiscasset0.62 MGD (million gallons per day)2022
MARLETTE STPMarlette0.62 MGD (million gallons per day)2022
Anderson WWTPAnderson0.62 MGD (million gallons per day)2022
Peterborough WWTFPeterborough0.62 MGD (million gallons per day)2022
Jefferson WWTPJefferson0.62 MGD (million gallons per day)2022
Gun Barrel City WWTPMabank0.62 MGD (million gallons per day)2022
Pirates Beach WWTPGalveston0.62 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.