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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
HUGO WWTPHugo0.075 MGD (million gallons per day)2022
LARKSPUR LAGOONLarkspur0.075 MGD (million gallons per day)2022
Ponce De Leon WWTPPonce De Leon0.075 MGD (million gallons per day)2022
Paxton WWTFLaurel Hill0.075 MGD (million gallons per day)2022
DanielsvilleDanielsville0.075 MGD (million gallons per day)2022
Odum LASOdum0.075 MGD (million gallons per day)2022
Dexter WPCPDexter0.075 MGD (million gallons per day)2022
Madison County Industrial Development Building Authority WPCP and LASHull0.075 MGD (million gallons per day)2022
GRANITE CREEK-REEDER BAY STPNordman0.075 MGD (million gallons per day)2022
Spring Grove Wastewater SystemSpring Grove0.075 MGD (million gallons per day)2022
Village of Table Grove WWTP/Coll. SysTable Grove0.075 MGD (million gallons per day)2022
DALTON CITY STPDalton City0.075 MGD (million gallons per day)2022
MontezumaMontezuma0.075 MGD (million gallons per day)2022
ROANN WWTPRoann0.075 MGD (million gallons per day)2022
Jefferson Township RSDOtwell0.075 MGD (million gallons per day)2022
CASEY WWTPCasey0.075 MGD (million gallons per day)2022
GARRISON WWTPGarrison0.075 MGD (million gallons per day)2022
GARWIN STLGarwin0.075 MGD (million gallons per day)2022
ARLINGTON WWTPArlington0.075 MGD (million gallons per day)2022
FOWLER WWTPFowler0.075 MGD (million gallons per day)2022
HOYT WWTPHoyt0.075 MGD (million gallons per day)2022
GLASCO WWTPGlasco0.075 MGD (million gallons per day)2022
FI CO SD #2 (SOUTHWIND) WWTPGarden City0.075 MGD (million gallons per day)2022
HAVILAND WWTPHaviland0.075 MGD (million gallons per day)2022
MT. OLIVET WWTPMount Olivet0.075 MGD (million gallons per day)2022
HESSMER LAGOONSHessmer0.075 MGD (million gallons per day)2022
PROVENCAL WWCTSProvencal0.075 MGD (million gallons per day)2022
HARDWOOD COLLECTION SYS.Saint Francisville0.075 MGD (million gallons per day)2022
Chesapeake City North STPChesapeake City0.075 MGD (million gallons per day)2022
COMFREY WWTPComfrey0.075 MGD (million gallons per day)2022
HALSTAD WWTPHalstad0.075 MGD (million gallons per day)2022
ALVARADO WWTPAlvarado0.075 MGD (million gallons per day)2022
Northwest Valley Middle School WWTFHouse Springs0.075 MGD (million gallons per day)2022
Kelso WWTPKelso0.075 MGD (million gallons per day)2022
Greentop WWTPGreentop0.075 MGD (million gallons per day)2022
Montrose WWTPMontrose0.075 MGD (million gallons per day)2022
Rocky Mount Sewer District WWTPRocky Mount0.075 MGD (million gallons per day)2022
Lewistown WWTPLewistown0.075 MGD (million gallons per day)2022
Miller WWTPMiller0.075 MGD (million gallons per day)2022
VERDIGRE WWTPVerdigre0.075 MGD (million gallons per day)2022
Canaan WWTFCanaan0.075 MGD (million gallons per day)2022
Chester Borough - CS/STPChester0.075 MGD (million gallons per day)2022
Jemez Springs, Village ofJemez Springs0.075 MGD (million gallons per day)2022
Reserve, Village of, Wastewater Treatment PlantReserve0.075 MGD (million gallons per day)2022
Magdalena WWTPMagdalena0.075 MGD (million gallons per day)2022
Olive, (T) Boiceville WWTPBoiceville0.075 MGD (million gallons per day)2022
NYS Thruway Authority WWTPPattersonville0.075 MGD (million gallons per day)2022
Willsboro (T) SD#1 STP SewersWillsboro0.075 MGD (million gallons per day)2022
De Kalb (T) D.Junction STP & SewersDe Kalb Junction0.075 MGD (million gallons per day)2022
COLERAIN WWTPColerain0.075 MGD (million gallons per day)2022
BRIDGETON WWTPBridgeton0.075 MGD (million gallons per day)2022
SALEMBURG WWTPSalemburg0.075 MGD (million gallons per day)2022
Republic WWTP & SewersRepublic0.075 MGD (million gallons per day)2022
Galena WWTP & Sewer SystemGalena0.075 MGD (million gallons per day)2022
HULBERT PWA WWTHulbert0.075 MGD (million gallons per day)2022
LAHOMA WWTLahoma0.075 MGD (million gallons per day)2022
KEOTA PWA WWTKeota0.075 MGD (million gallons per day)2022
WAYNE WWTWayne0.075 MGD (million gallons per day)2022
Aurora Wastewater Collection SystemAurora0.075 MGD (million gallons per day)2022
W & WW Authority of Wilson CountyLebanon0.075 MGD (million gallons per day)2022
Skellytown WWTPSkellytown0.075 MGD (million gallons per day)2022
Turkey WWTPTurkey0.075 MGD (million gallons per day)2022
EdroyEdroy0.075 MGD (million gallons per day)2022
South Central Calhoun Co WCID #1Port Lavaca0.075 MGD (million gallons per day)2022
Rochester WWTPRochester0.075 MGD (million gallons per day)2022
Snook WWTPSnook0.075 MGD (million gallons per day)2022
RIESEL STPRiesel0.075 MGD (million gallons per day)2022
Lakeside City WWTPWichita Falls0.075 MGD (million gallons per day)2022
Readsboro WWTFReadsboro0.075 MGD (million gallons per day)2022
LIND STPLind0.075 MGD (million gallons per day)2022
MATOAKA WWTPMatoaka0.075 MGD (million gallons per day)2022
GLEN ROGERS WWTPGlen Rogers0.075 MGD (million gallons per day)2022
BLUE MOUNDS STPBlue Mounds0.075 MGD (million gallons per day)2022
Lincoln Hills School WWTPIrma0.075 MGD (million gallons per day)2022
RIDGEWAY STPRidgeway0.075 MGD (million gallons per day)2022
ROCKLAND STPRockland0.075 MGD (million gallons per day)2022
ALLENTON SD #1 WWTPAllenton0.075 MGD (million gallons per day)2022
Maplesville WWTPMaplesville0.074 MGD (million gallons per day)2022
Keystone Heights WWTFKeystone Heights0.074 MGD (million gallons per day)2022
AHSAHKA STPAhsahka0.074 MGD (million gallons per day)2022
ELLIOTT STLElliott0.074 MGD (million gallons per day)2022
GALVA WWTPGalva0.074 MGD (million gallons per day)2022
THOMPSON WWTPThompson0.074 MGD (million gallons per day)2022
Avoca WWTPAvoca0.074 MGD (million gallons per day)2022
LAKE WILSON WWTPLake Wilson0.074 MGD (million gallons per day)2022
MAYNARD STPMaynard0.074 MGD (million gallons per day)2022
Labadie WWTPLabadie0.074 MGD (million gallons per day)2022
Robertsville WWTPRobertsville0.074 MGD (million gallons per day)2022
Greenville WWTPGreenville0.074 MGD (million gallons per day)2022
Shelbyville WWTPShelbyville0.074 MGD (million gallons per day)2022
Colton STPColton0.074 MGD (million gallons per day)2022
ALMA CENTER STPAlma Center0.074 MGD (million gallons per day)2022
BUTTERNUT WWTPButternut0.074 MGD (million gallons per day)2022
MELBA STPMelba0.073 MGD (million gallons per day)2022
LAUREL STLLaurel0.073 MGD (million gallons per day)2022
LAWTON LAGOONLawton0.073 MGD (million gallons per day)2022
STANTON STLStanton0.073 MGD (million gallons per day)2022
KILBOURNE LAGOONKilbourne0.073 MGD (million gallons per day)2022
MCGREGOR WWTPMcgregor0.073 MGD (million gallons per day)2022
PILLAGER WWTFPillager0.073 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.