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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
Hurley WWTPHurley0.052 MGD (million gallons per day)2022
Mora MW&SWAMora0.052 MGD (million gallons per day)2022
Rutland WWTP & Sewer SystemRutland0.052 MGD (million gallons per day)2022
Malinta WWTP and SewersMalinta0.052 MGD (million gallons per day)2022
Whiteface WWTPWhiteface0.052 MGD (million gallons per day)2022
MOSCA GID / Alamosa CountyMosca0.051 MGD (million gallons per day)2022
Aspen Village MDAspen0.051 MGD (million gallons per day)2022
TETONIA S/T FACILITYTetonia0.051 MGD (million gallons per day)2022
MACBRIDE SANITARY SEWER DISTRICTSolon0.051 MGD (million gallons per day)2022
Elba Twp WWTP LagoonLapeer0.051 MGD (million gallons per day)2022
AFTON WWTPAfton0.051 MGD (million gallons per day)2022
PETERSON WWTPPeterson0.051 MGD (million gallons per day)2022
Cainsville WWTFCainsville0.051 MGD (million gallons per day)2022
Kingsville WWTPKingsville0.051 MGD (million gallons per day)2022
BELLWOOD WWTPBellwood0.051 MGD (million gallons per day)2022
Chesterfield Township - CS/STPChesterfield0.051 MGD (million gallons per day)2022
Bowerston WWTP & Sewer SystemBowerston0.051 MGD (million gallons per day)2022
WALLA WALLA WD #2 STPWalla Walla0.051 MGD (million gallons per day)2022
PENN COVE WWTPOak Harbor0.051 MGD (million gallons per day)2022
FAIRWATER WWTPFairwater0.051 MGD (million gallons per day)2022
Hewitt SD - WWTPHewitt0.051 MGD (million gallons per day)2022
Vredenburgh Lagoon & WetlandVredenburgh0.05 MGD (million gallons per day)2022
AKRON LAGOONAkron0.05 MGD (million gallons per day)2022
IDER WWTPIder0.05 MGD (million gallons per day)2022
Seldovia Collection and Community SepticSeldovia0.05 MGD (million gallons per day)2022
Anderson LagoonAnderson0.05 MGD (million gallons per day)2022
Nenana WWTPNenana0.05 MGD (million gallons per day)2022
Saint Paul LagoonSaint Paul Island0.05 MGD (million gallons per day)2022
Ambler LagoonAmbler0.05 MGD (million gallons per day)2022
Scammon Bay LagoonScammon Bay0.05 MGD (million gallons per day)2022
Glennallen LagoonGlennallen0.05 MGD (million gallons per day)2022
Alakanuk LagoonAlakanuk0.05 MGD (million gallons per day)2022
Saint Mary's LagoonSaint Marys0.05 MGD (million gallons per day)2022
Almyra WWTPAlmyra0.05 MGD (million gallons per day)2022
Parkdale WWTPParkdale0.05 MGD (million gallons per day)2022
Norfork WWTPNorfork0.05 MGD (million gallons per day)2022
McDougal WWTPMc Dougal0.05 MGD (million gallons per day)2022
Emerson WWTPEmerson0.05 MGD (million gallons per day)2022
Fulton WWTPFulton0.05 MGD (million gallons per day)2022
Thornton WWTPThornton0.05 MGD (million gallons per day)2022
Rondo WWTPLa Grange0.05 MGD (million gallons per day)2022
Keo WWTPKeo0.05 MGD (million gallons per day)2022
Portland WWTPPortland0.05 MGD (million gallons per day)2022
Blythe Airport WWTFBlythe0.05 MGD (million gallons per day)2022
Pine Valley WWTFSan Diego0.05 MGD (million gallons per day)2022
Saddler Ridge Metropolitan DistrictFort Collins0.05 MGD (million gallons per day)2022
HILAND ACRES WSDBrighton0.05 MGD (million gallons per day)2022
OVID WWTPOvid0.05 MGD (million gallons per day)2022
AGUILAR, TOWN OFAguilar0.05 MGD (million gallons per day)2022
OTIS WWTPOtis0.05 MGD (million gallons per day)2022
MERINO STPMerino0.05 MGD (million gallons per day)2022
REDSTONE STPCarbondale0.05 MGD (million gallons per day)2022
WILEY STPWiley0.05 MGD (million gallons per day)2022
BACA GRANDE CASITA PARKCrestone0.05 MGD (million gallons per day)2022
HIGHLINE LAKE PK STPLoma0.05 MGD (million gallons per day)2022
Alta Colorado MDLeadville0.05 MGD (million gallons per day)2022
Forest Hills Metropolitan DistrictGolden0.05 MGD (million gallons per day)2022
Eckley, Town ofEckley0.05 MGD (million gallons per day)2022
Blanca, Town ofBlanca0.05 MGD (million gallons per day)2022
Fleming, Town ofFleming0.05 MGD (million gallons per day)2022
Glacier View Meadows WS AssocLivermore0.05 MGD (million gallons per day)2022
Dallas Creek/Ouray CountyRidgway0.05 MGD (million gallons per day)2022
Glacier View Meadows WSAWard0.05 MGD (million gallons per day)2022
PORT PENN STP.Middletown0.05 MGD (million gallons per day)2022
VC/Pelican Dunes WWTFOrmond Beach0.05 MGD (million gallons per day)2022
Big Bend Water AuthoritySteinhatchee0.05 MGD (million gallons per day)2022
Walnut Grove LASMonroe0.05 MGD (million gallons per day)2022
Rutledge Oxidation Pond LASRutledge0.05 MGD (million gallons per day)2022
Ochlocknee WPCPOchlocknee0.05 MGD (million gallons per day)2022
MOYIE SPRINGS S/T FACMoyie Springs0.05 MGD (million gallons per day)2022
ALBION SEWAGE TRT FACAlbion0.05 MGD (million gallons per day)2022
EDEN SEWAGE TRT FACEden0.05 MGD (million gallons per day)2022
LORAINE STPLoraine0.05 MGD (million gallons per day)2022
NILWOOD S T PNilwood0.05 MGD (million gallons per day)2022
FAYETTEVILLE STPFayetteville0.05 MGD (million gallons per day)2022
COYNE CENTER S.D.Milan0.05 MGD (million gallons per day)2022
EASTON SEWAGE TREATMENT FEaston0.05 MGD (million gallons per day)2022
MASON STWMason0.05 MGD (million gallons per day)2022
BONNIE STPBonnie0.05 MGD (million gallons per day)2022
INA STPIna0.05 MGD (million gallons per day)2022
MaldenMalden0.05 MGD (million gallons per day)2022
XENIA STPXenia0.05 MGD (million gallons per day)2022
PANAMA STPPanama0.05 MGD (million gallons per day)2022
DAHLGREN STPDahlgren0.05 MGD (million gallons per day)2022
SCALES MOUND STPScales Mound0.05 MGD (million gallons per day)2022
MAQUON STPMaquon0.05 MGD (million gallons per day)2022
BALDWIN STPBaldwin0.05 MGD (million gallons per day)2022
WINSLOW WTPWinslow0.05 MGD (million gallons per day)2022
BEECHER CITY STPBeecher City0.05 MGD (million gallons per day)2022
Crane, Town ofCrane0.05 MGD (million gallons per day)2022
Green County RSDBloomfield0.05 MGD (million gallons per day)2022
Gnaw Bone RSDNashville0.05 MGD (million gallons per day)2022
La Otto RSDLaotto0.05 MGD (million gallons per day)2022
KIMBALLTON STLKimballton0.05 MGD (million gallons per day)2022
DIAMOND JO WORTHNorthwood0.05 MGD (million gallons per day)2022
PIERSON WWTPPierson0.05 MGD (million gallons per day)2022
VAIL LAGOONVail0.05 MGD (million gallons per day)2022
MAHARISHI VEDIC CITY WWTPFairfield0.05 MGD (million gallons per day)2022
MAYETTA WWTPMayetta0.05 MGD (million gallons per day)2022
JF CO S D #7 LAKE RDG EST WWTPOzawkie0.05 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.