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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
SOUTH STP #3Huntsville1.6 MGD (million gallons per day)2022
Silsbee SouthSilsbee1.6 MGD (million gallons per day)2022
West Columbia WWTPWest Columbia1.6 MGD (million gallons per day)2022
Spring Glen WWTPHouston1.6 MGD (million gallons per day)2022
Saint Johnsbury WWTFSaint Johnsbury1.6 MGD (million gallons per day)2022
LURAY S T PLuray1.6 MGD (million gallons per day)2022
BERK CO PSSD - OPEQ/HEDGE WWTPMartinsburg1.6 MGD (million gallons per day)2022
FOLLANSBEE WWTPFollansbee1.6 MGD (million gallons per day)2022
RICHLAND CENTER WWTPRichland Center1.6 MGD (million gallons per day)2022
SAUKVILLE STPSaukville1.6 MGD (million gallons per day)2022
NORWAY, TOWN SD #1 STPWaterford1.6 MGD (million gallons per day)2022
Zapata WWTPZapata1.599 MGD (million gallons per day)2022
CAMDEN WPCFCamden1.59 MGD (million gallons per day)2022
Temescal Valley WD WWTPCorona1.58 MGD (million gallons per day)2022
Lambertville City SA - CS/STPLambertville1.58 MGD (million gallons per day)2022
Cortez Sanitation DistrictCortez1.57 MGD (million gallons per day)2022
GREENVILLE STWGreenville1.57 MGD (million gallons per day)2022
PRINCETON STPPrinceton1.57 MGD (million gallons per day)2022
ROCKPORT WWTPRockport1.57 MGD (million gallons per day)2022
CORINNA W P C FCorinna1.56 MGD (million gallons per day)2022
FALMOUTH WWTFFalmouth1.56 MGD (million gallons per day)2022
COLD SPRING WWTPCold Spring1.56 MGD (million gallons per day)2022
PIEDMONT WWTPPiedmont1.55 MGD (million gallons per day)2022
Plymouth Sewerage Collection System and WWTFPlymouth1.55 MGD (million gallons per day)2022
Cuba WWTPCuba1.55 MGD (million gallons per day)2022
Catskill (V) WWTPCatskill1.55 MGD (million gallons per day)2022
LECLAIRE WWTPLe Claire1.54 MGD (million gallons per day)2022
Mitchell, City ofMitchell1.54 MGD (million gallons per day)2022
POCOMOKE CITY WWTPPocomoke City1.53 MGD (million gallons per day)2022
Medfield Sewerage Collection System and WWTFMedfield1.52 MGD (million gallons per day)2022
LAKE CITY WWTPLake City1.52 MGD (million gallons per day)2022
EVANSDALE WWTPEvansdale1.517 MGD (million gallons per day)2022
ELDORA WWTPEldora1.515 MGD (million gallons per day)2022
Sylvania WPCPSylvania1.51 MGD (million gallons per day)2022
Uxbridge Sewerage Collection System and WWTFUxbridge1.51 MGD (million gallons per day)2022
MSD Indian Creek Drainage BasinNorth Bend1.51 MGD (million gallons per day)2022
Raymondville WWTPRaymondville1.51 MGD (million gallons per day)2022
Montgomery-Milley's Creek WWTPPike Road1.5 MGD (million gallons per day)2022
BREWTON LAGOONBrewton1.5 MGD (million gallons per day)2022
Calera WWTP Buxahatchee CreekCalera1.5 MGD (million gallons per day)2022
CHICKASAW LAGOONMobile1.5 MGD (million gallons per day)2022
Enterprise College WWTPEnterprise1.5 MGD (million gallons per day)2022
PRICHARD STANLEY BROOKS WWTPEight Mile1.5 MGD (million gallons per day)2022
ROANOKE WWTFRoanoke1.5 MGD (million gallons per day)2022
EVERGREEN LAGOONCastleberry1.5 MGD (million gallons per day)2022
Hamilton WWTPHamilton1.5 MGD (million gallons per day)2022
RAINSVILLE WWTPRainsville1.5 MGD (million gallons per day)2022
THOMASVILLE HCR LAGOONThomasville1.5 MGD (million gallons per day)2022
Marana WWTFMarana1.5 MGD (million gallons per day)2022
Sahuarita WWTRSahuarita1.5 MGD (million gallons per day)2022
Arizona City Sanitary DistrictArizona City1.5 MGD (million gallons per day)2022
Cottonwood Mingus WWTFCottonwood1.5 MGD (million gallons per day)2022
SAN LUIS SBR WESTSan Luis1.5 MGD (million gallons per day)2022
Crossett WWTPCrossett1.5 MGD (million gallons per day)2022
Monticello - West WWTPMonticello1.5 MGD (million gallons per day)2022
Clinton - West WWTPClinton1.5 MGD (million gallons per day)2022
FORTUNA WWTFFortuna1.5 MGD (million gallons per day)2022
SCOTTS VALLEY WWTFScotts Valley1.5 MGD (million gallons per day)2022
SOLVANG WWTFSolvang1.5 MGD (million gallons per day)2022
TAFT WWTFTaft1.5 MGD (million gallons per day)2022
Upper Blue Sanitation DistrictBreckenridge1.5 MGD (million gallons per day)2022
ESTES PARK WWTPEstes Park1.5 MGD (million gallons per day)2022
ERIE SWRFErie1.5 MGD (million gallons per day)2022
BUENA VISTA WWTPBuena Vista1.5 MGD (million gallons per day)2022
Lewes WWTFLewes1.5 MGD (million gallons per day)2022
Northeast County WWTFNaples1.5 MGD (million gallons per day)2022
Sunrise Southwest WWTPFort Lauderdale1.5 MGD (million gallons per day)2022
BLOUNTSTOWN WWTFBlountstown1.5 MGD (million gallons per day)2022
Mid-Clay WWTPMiddleburg1.5 MGD (million gallons per day)2022
GOLDEN GATE - FGUALongwood1.5 MGD (million gallons per day)2022
Avon Park WWTPAvon Park1.5 MGD (million gallons per day)2022
MarathonMarathon1.5 MGD (million gallons per day)2022
DADE CITY WPCPDade City1.5 MGD (million gallons per day)2022
State Road 16 WWTFSaint Augustine1.5 MGD (million gallons per day)2022
Sawgrass WWTFPonte Vedra Beach1.5 MGD (million gallons per day)2022
North Bay WWTPPanama City1.5 MGD (million gallons per day)2022
CRYSTAL RIVER WWFCrystal River1.5 MGD (million gallons per day)2022
City of Inverness WWTFInverness1.5 MGD (million gallons per day)2022
Quincy WWTPQuincy1.5 MGD (million gallons per day)2022
CLEWISTON WWTPClewiston1.5 MGD (million gallons per day)2022
SEBRING Cemetery Road WWTPSebring1.5 MGD (million gallons per day)2022
Mount Dora WWTP #1Mount Dora1.5 MGD (million gallons per day)2022
Southwest Regional WRFHomosassa1.5 MGD (million gallons per day)2022
City of Alachua AWRFAlachua1.5 MGD (million gallons per day)2022
Brunswick-Glynn County Exit 29 WPCPBrunswick1.5 MGD (million gallons per day)2022
Indian Creek WPCPLocust Grove1.5 MGD (million gallons per day)2022
Barrow County Tanners Bridge WWTFBethlehem1.5 MGD (million gallons per day)2022
Oconee County (Calls Creek WPCP)Watkinsville1.5 MGD (million gallons per day)2022
Pumpkinvine Creek WRFAcworth1.5 MGD (million gallons per day)2022
Camilla (LAS)Camilla1.5 MGD (million gallons per day)2022
Folkston WPCPFolkston1.5 MGD (million gallons per day)2022
Hogansville WPCPHogansville1.5 MGD (million gallons per day)2022
Pelham WPCPPelham1.5 MGD (million gallons per day)2022
Stephan D. Purifoy WPCPStockbridge1.5 MGD (million gallons per day)2022
Winder Marburg CR WPCPWinder1.5 MGD (million gallons per day)2022
Decatur County Board of Commission (Industrial Airpark WPCP)Bainbridge1.5 MGD (million gallons per day)2022
MIDDLETON SEWAGE TREATMENT FCLTYMiddleton1.5 MGD (million gallons per day)2022
SANDWICH STWSandwich1.5 MGD (million gallons per day)2022
PITTSFIELD MAIN PLANTPittsfield1.5 MGD (million gallons per day)2022
ST CLAIR STPBelleville1.5 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.