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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
MAZEPPA WWTPMazeppa0.073 MGD (million gallons per day)2022
Rockport I-29 WWTPRock Port0.073 MGD (million gallons per day)2022
Randolph (V) WWTPRandolph0.073 MGD (million gallons per day)2022
Bay City - STPBay City0.073 MGD (million gallons per day)2022
Harrell WWTPHarrell0.072 MGD (million gallons per day)2022
Perrytown WWTPHope0.072 MGD (million gallons per day)2022
Leavitt Lake Evaporation PondsSusanville0.072 MGD (million gallons per day)2022
Lauramie Township RSD WWTPStockwell0.072 MGD (million gallons per day)2022
LEHIGH WWTPLehigh0.072 MGD (million gallons per day)2022
RICHLAND WWTPRichland0.072 MGD (million gallons per day)2022
THORNTON STLThornton0.072 MGD (million gallons per day)2022
ARLINGTON WWTPArlington0.072 MGD (million gallons per day)2022
GREENLEAF WWTPGreenleaf0.072 MGD (million gallons per day)2022
LV CO S D #2 WWTPLeavenworth0.072 MGD (million gallons per day)2022
VINALHAVEN, WWTFVinalhaven0.072 MGD (million gallons per day)2022
Cedar Heights Condominiums WWTPCamdenton0.072 MGD (million gallons per day)2022
Wayland WWTPWayland0.072 MGD (million gallons per day)2022
Lyons Falls (V) WWTPLyons Falls0.072 MGD (million gallons per day)2022
Mercer Co West Jefferson WWTPCelina0.072 MGD (million gallons per day)2022
BILLINGS WWTBillings0.072 MGD (million gallons per day)2022
PLACEDO STPPlacedo0.072 MGD (million gallons per day)2022
Lindale South WWTPLindale0.072 MGD (million gallons per day)2022
Coulee City STPCoulee City0.072 MGD (million gallons per day)2022
COCHRANE WWTPCochrane0.072 MGD (million gallons per day)2022
STOCKBRIDGE STPStockbridge0.072 MGD (million gallons per day)2022
MYSTIC WWTPMystic0.071 MGD (million gallons per day)2022
HAWKEYE WWTPHawkeye0.071 MGD (million gallons per day)2022
LECOMPTON WWTPLecompton0.071 MGD (million gallons per day)2022
Holt WWTPHolt0.071 MGD (million gallons per day)2022
Sheldon WWTPSheldon0.071 MGD (million gallons per day)2022
Novinger WWTPNovinger0.071 MGD (million gallons per day)2022
PattonsburgPattonsburg0.071 MGD (million gallons per day)2022
Town of Gordon - LagoonGordon0.07 MGD (million gallons per day)2022
Valley Grande-Overlook Hills LagoonSelma0.07 MGD (million gallons per day)2022
ALTOONA LAGOONAltoona0.07 MGD (million gallons per day)2022
Emmonak LagoonEmmonak0.07 MGD (million gallons per day)2022
King Salmon Aerated LagoonNaknek0.07 MGD (million gallons per day)2022
Marana High School WWTPTucson0.07 MGD (million gallons per day)2022
Jerome WWTFJerome0.07 MGD (million gallons per day)2022
Horseshoe Lake WWTPHughes0.07 MGD (million gallons per day)2022
Hermitage WWTPHermitage0.07 MGD (million gallons per day)2022
Altus WWTPAltus0.07 MGD (million gallons per day)2022
Etowah WWTPEtowah0.07 MGD (million gallons per day)2022
Hatfield WWTPHatfield0.07 MGD (million gallons per day)2022
Mineral Wastewater Treatment PlantMineral0.07 MGD (million gallons per day)2022
PALA RESERVATION LAGOONPala0.07 MGD (million gallons per day)2022
SILVER HEIGHTS STPCastle Rock0.07 MGD (million gallons per day)2022
ROUND MOUNTAIN WWTPWestcliffe0.07 MGD (million gallons per day)2022
De Beque WWTPDe Beque0.07 MGD (million gallons per day)2022
Maybell Sanitation DistrictMaybell0.07 MGD (million gallons per day)2022
SOUTHSIDE SEWER SYSTEMSandpoint0.07 MGD (million gallons per day)2022
GEORGETOWN S/T FACILITYGeorgetown0.07 MGD (million gallons per day)2022
ELLISPORT BAY S/T FACILITYHope0.07 MGD (million gallons per day)2022
MEDORA STPMedora0.07 MGD (million gallons per day)2022
MULBERRY GROVE STPMulberry Grove0.07 MGD (million gallons per day)2022
SUMMERFIELD STPSummerfield0.07 MGD (million gallons per day)2022
ALHAMBRA STPAlhambra0.07 MGD (million gallons per day)2022
GOODFIELD WWTPGoodfield0.07 MGD (million gallons per day)2022
BUREAU JUNCTIONBureau0.07 MGD (million gallons per day)2022
GOLDEN STPGolden0.07 MGD (million gallons per day)2022
PATOKA STPPatoka0.07 MGD (million gallons per day)2022
BLUFORD STPBluford0.07 MGD (million gallons per day)2022
KAMPSVILLE STPKampsville0.07 MGD (million gallons per day)2022
FLAT ROCK STPFlat Rock0.07 MGD (million gallons per day)2022
OLMSTED STPOlmsted0.07 MGD (million gallons per day)2022
COWDEN STPCowden0.07 MGD (million gallons per day)2022
HERRICK STPHerrick0.07 MGD (million gallons per day)2022
FITHIAN STPFithian0.07 MGD (million gallons per day)2022
SORENTO STPSorento0.07 MGD (million gallons per day)2022
IRVING STPIrving0.07 MGD (million gallons per day)2022
HAMMOND STPHammond0.07 MGD (million gallons per day)2022
GORHAM STPGorham0.07 MGD (million gallons per day)2022
INDUSTRY WWTPIndustry0.07 MGD (million gallons per day)2022
BARDOLPH STWBardolph0.07 MGD (million gallons per day)2022
HUMBOLDT STPHumboldt0.07 MGD (million gallons per day)2022
NEW HAVEN STPNew Haven0.07 MGD (million gallons per day)2022
HOYLETON STPHoyleton0.07 MGD (million gallons per day)2022
KINGMAN WWTPKingman0.07 MGD (million gallons per day)2022
LANESVILLE WWTPLanesville0.07 MGD (million gallons per day)2022
DUPONT STPDupont0.07 MGD (million gallons per day)2022
WINSLOW WWTPWinslow0.07 MGD (million gallons per day)2022
BAYARD WWTPBayard0.07 MGD (million gallons per day)2022
FLOYD WWTPFloyd0.07 MGD (million gallons per day)2022
HARPERS FERRY WWTPHarpers Ferry0.07 MGD (million gallons per day)2022
FREMONT STPFremont0.07 MGD (million gallons per day)2022
ARGONIA WWTPArgonia0.07 MGD (million gallons per day)2022
BUSHTON WWTPBushton0.07 MGD (million gallons per day)2022
MACKSVILLE WWTPMacksville0.07 MGD (million gallons per day)2022
SOUTH HAVEN WWTPSouth Haven0.07 MGD (million gallons per day)2022
PROTECTION WWTPProtection0.07 MGD (million gallons per day)2022
JEWELL WWTPJewell0.07 MGD (million gallons per day)2022
DWIGHT WWTPDwight0.07 MGD (million gallons per day)2022
SMITHLANDSmithland0.07 MGD (million gallons per day)2022
SHARPSBURGSharpsburg0.07 MGD (million gallons per day)2022
DOWNSVILLE STPDownsville0.07 MGD (million gallons per day)2022
DODSON LAGOONDodson0.07 MGD (million gallons per day)2022
MILBRIDGE WWTPMilbridge0.07 MGD (million gallons per day)2022
Clifton on the Potomac WWTPNewburg0.07 MGD (million gallons per day)2022
PLAINFIELD TWP WWSLHale0.07 MGD (million gallons per day)2022
GAGETOWN STPGagetown0.07 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.