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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
RUSSELL SD #1 - STPGleason0.048 MGD (million gallons per day)2022
LARSEN-WINCHESTER SD - WWTPLarsen0.048 MGD (million gallons per day)2022
POY SIPPI SD STPPoy Sippi0.048 MGD (million gallons per day)2022
Griffithville WWTPGriffithville0.047 MGD (million gallons per day)2022
ORIENT STPOrient0.047 MGD (million gallons per day)2022
Newport, Town ofNewport0.047 MGD (million gallons per day)2022
CLEGHORN WWTPCleghorn0.047 MGD (million gallons per day)2022
Sun Valley Sanitary DistrictEllston0.047 MGD (million gallons per day)2022
MCCALLSBURG STLMc Callsburg0.047 MGD (million gallons per day)2022
TESCOTT WWTPTescott0.047 MGD (million gallons per day)2022
UPSALA WWTPUpsala0.047 MGD (million gallons per day)2022
RICHEY WWTPRichey0.047 MGD (million gallons per day)2022
Lakewood Village WWTPLittle Elm0.047 MGD (million gallons per day)2022
LAKE WENATCHEE POTWLeavenworth0.047 MGD (million gallons per day)2022
CRESTON STPCreston0.047 MGD (million gallons per day)2022
Florence North WRFFlorence0.046 MGD (million gallons per day)2022
Saint Charles WWTPSaint Charles0.046 MGD (million gallons per day)2022
Rockport Wastewater SystemMalvern0.046 MGD (million gallons per day)2022
MIRANDA WWTFMiranda0.046 MGD (million gallons per day)2022
BURNETTSVILLE WWTPBurnettsville0.046 MGD (million gallons per day)2022
MENLO WWTPMenlo0.046 MGD (million gallons per day)2022
STOCKPORT WWTPStockport0.046 MGD (million gallons per day)2022
PROTIVIN WWTPProtivin0.046 MGD (million gallons per day)2022
PARKER WWTPParker0.046 MGD (million gallons per day)2022
HAMILTON WWTPHamilton0.046 MGD (million gallons per day)2022
WICHITA (FAIRWAY MEADOWS) WWTPWichita0.046 MGD (million gallons per day)2022
DALTON WWTPDalton0.046 MGD (million gallons per day)2022
VERGAS WWTPVergas0.046 MGD (million gallons per day)2022
Williamsville WWTPWilliamsville0.046 MGD (million gallons per day)2022
ALBERTON LAGOONSAlberton0.046 MGD (million gallons per day)2022
DUTTON LAGOONDutton0.046 MGD (million gallons per day)2022
Carmel (T) SD #7 STP -Country ManorMahopac0.046 MGD (million gallons per day)2022
Geauga Co Kimberly Estates WWTPNewbury0.046 MGD (million gallons per day)2022
GRAND RONDE STPGrand Ronde0.046 MGD (million gallons per day)2022
Town of West Point-WWTPCullman0.045 MGD (million gallons per day)2022
Knobel WWTPKnobel0.045 MGD (million gallons per day)2022
Perry WWTPPerry0.045 MGD (million gallons per day)2022
Ulm WWTPUlm0.045 MGD (million gallons per day)2022
GRANADA STPGranada0.045 MGD (million gallons per day)2022
Banks County Industrial Park WPCPCommerce0.045 MGD (million gallons per day)2022
Newington WPCPNewington0.045 MGD (million gallons per day)2022
BOTTLE BAY S/T FACILITYSagle0.045 MGD (million gallons per day)2022
NEWDALE S/T FACILITYNewdale0.045 MGD (million gallons per day)2022
Grand View Sewage SystemGrand View0.045 MGD (million gallons per day)2022
MANLIUS STPManlius0.045 MGD (million gallons per day)2022
HILLSBORO WWTPHillsboro0.045 MGD (million gallons per day)2022
MODOC STPModoc0.045 MGD (million gallons per day)2022
TENNYSON STPTennyson0.045 MGD (million gallons per day)2022
Glenwood WWTPGlenwood0.045 MGD (million gallons per day)2022
ASHTON WWTPAshton0.045 MGD (million gallons per day)2022
BLAIRSBURG STLBlairsburg0.045 MGD (million gallons per day)2022
BLENCOE STLBlencoe0.045 MGD (million gallons per day)2022
DIXON WWTPDixon0.045 MGD (million gallons per day)2022
NICHOLS STLNichols0.045 MGD (million gallons per day)2022
WASHTA WWTPWashta0.045 MGD (million gallons per day)2022
SPILLVILLE WWTPSpillville0.045 MGD (million gallons per day)2022
VIOLA WWTPViola0.045 MGD (million gallons per day)2022
COLONY WWTPColony0.045 MGD (million gallons per day)2022
NEOSHO RAPIDS WWTPNeosho Rapids0.045 MGD (million gallons per day)2022
LURAY WWTPLuray0.045 MGD (million gallons per day)2022
PALCO WWTPPalco0.045 MGD (million gallons per day)2022
LEWIS WWTPLewis0.045 MGD (million gallons per day)2022
BIRD CITY WWTPBird City0.045 MGD (million gallons per day)2022
CLARKSON STPClarkson0.045 MGD (million gallons per day)2022
MENIFEE CO. S.D.#1Means0.045 MGD (million gallons per day)2022
MSD - OCEA Lockwood Estates WWTPCrestwood0.045 MGD (million gallons per day)2022
LEWISTOWN PONDRaceland0.045 MGD (million gallons per day)2022
FLINTSTONE-GILPIN WWTPFlintstone0.045 MGD (million gallons per day)2022
NEW MUNICH WWTPNew Munich0.045 MGD (million gallons per day)2022
GILMAN WWTFGilman0.045 MGD (million gallons per day)2022
HARTLAND WWTPHartland0.045 MGD (million gallons per day)2022
DEXTER WWTPDexter0.045 MGD (million gallons per day)2022
Urbana WWTPUrbana0.045 MGD (million gallons per day)2022
Diggins WWTPDiggins0.045 MGD (million gallons per day)2022
Bunker WWTFBunker0.045 MGD (million gallons per day)2022
BASIN W&S DISTRICTBasin0.045 MGD (million gallons per day)2022
GOLDFIELD WWTFGoldfield0.045 MGD (million gallons per day)2022
MONTELLO WWTFMontello0.045 MGD (million gallons per day)2022
Suffolk (Co) SCSD #9 COLLEGE PARKFarmingville0.045 MGD (million gallons per day)2022
East Hampton (T) WWTPEast Hampton0.045 MGD (million gallons per day)2022
Vinton WWTP and Sewer SystemVinton0.045 MGD (million gallons per day)2022
Mount Eaton WWTP & Sewer SystemMount Eaton0.045 MGD (million gallons per day)2022
Knox Co Bladensburg WWTPBladensburg0.045 MGD (million gallons per day)2022
Charles Mill Sites Lake Cottage WWTPMansfield0.045 MGD (million gallons per day)2022
Troy Township Wastewater DistrictNova0.045 MGD (million gallons per day)2022
GANS WWTGans0.045 MGD (million gallons per day)2022
MEDICINE PARK WWTMedicine Park0.045 MGD (million gallons per day)2022
WAPANUCKA PWA WWTWapanucka0.045 MGD (million gallons per day)2022
WEBBER'S FALLS WWTWebbers Falls0.045 MGD (million gallons per day)2022
OTTAWA #1 (WYANDOTTE) WWTWyandotte0.045 MGD (million gallons per day)2022
FRANCIS WWTFrancis0.045 MGD (million gallons per day)2022
GARDINER Sanitary DistrictGardiner0.045 MGD (million gallons per day)2022
East Sevier County UD STPSevierville0.045 MGD (million gallons per day)2022
Texline WWTPTexline0.045 MGD (million gallons per day)2022
Sanford WWTPSanford0.045 MGD (million gallons per day)2022
Tynan WWTPSinton0.045 MGD (million gallons per day)2022
Ponder WWTP (new)Ponder0.045 MGD (million gallons per day)2022
Mitchell Lake WWTPSan Antonio0.045 MGD (million gallons per day)2022
Marshfield WWTFMarshfield0.045 MGD (million gallons per day)2022
CLARK CO. HEALTH CC - STPOwen0.045 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.