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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
Carey WWTP & Sewer SystemCarey0.91 MGD (million gallons per day)2022
Slaton WWTPSlaton0.91 MGD (million gallons per day)2022
Cinco Ranch South WWTPKaty0.91 MGD (million gallons per day)2022
NORWOOD WWTPNorwood Young America0.908 MGD (million gallons per day)2022
Jefferson County-Prudes Creek WWTPGraysville0.9 MGD (million gallons per day)2022
Seward Aerated LagoonSeward0.9 MGD (million gallons per day)2022
Eureka Springs WWTPEureka Springs0.9 MGD (million gallons per day)2022
Pea Ridge WWTPPea Ridge0.9 MGD (million gallons per day)2022
Prairie Grove WWTPPrairie Grove0.9 MGD (million gallons per day)2022
LARKFIELD-WIKIUP WWTFSanta Rosa0.9 MGD (million gallons per day)2022
Colusa WWTPColusa0.9 MGD (million gallons per day)2022
BURLINGTON WWTPBurlington0.9 MGD (million gallons per day)2022
WELLINGTON WWTPWellington0.9 MGD (million gallons per day)2022
Barefoot Bay WWTPMelbourne0.9 MGD (million gallons per day)2022
LAKE ALFRED WPFLake Alfred0.9 MGD (million gallons per day)2022
Navarre Beach WWTFNavarre0.9 MGD (million gallons per day)2022
Buck Creek WPCPBremen0.9 MGD (million gallons per day)2022
Pearson WPCPPearson0.9 MGD (million gallons per day)2022
LAIE WRFLaie0.9 MGD (million gallons per day)2022
RIGBY STPRigby0.9 MGD (million gallons per day)2022
AMERICAN FALLS S/T FACILAmerican Falls0.9 MGD (million gallons per day)2022
Morris, East WWTPMorris0.9 MGD (million gallons per day)2022
MAHOMET STPMahomet0.9 MGD (million gallons per day)2022
OSSIAN WWTPOssian0.9 MGD (million gallons per day)2022
BRITT WWTPBritt0.9 MGD (million gallons per day)2022
ESSEX WWTPEssex0.9 MGD (million gallons per day)2022
FREDRICKSBURG WWTPFredericksburg0.9 MGD (million gallons per day)2022
EUDORA WWTPEudora0.9 MGD (million gallons per day)2022
BALDWIN CITY WWTPBaldwin City0.9 MGD (million gallons per day)2022
HERINGTON WWTPHerington0.9 MGD (million gallons per day)2022
MCCREARY CO WDStearns0.9 MGD (million gallons per day)2022
St. Tammany Regional WWTPSlidell0.9 MGD (million gallons per day)2022
FARMINGTON WATER POLLUTIOFarmington0.9 MGD (million gallons per day)2022
MACHIAS WWTFMachias0.9 MGD (million gallons per day)2022
Hampstead WWTP & Coll. Sys.Hampstead0.9 MGD (million gallons per day)2022
CHESTERTOWN WWTPChestertown0.9 MGD (million gallons per day)2022
WEST BRANCH WWTPWest Branch0.9 MGD (million gallons per day)2022
COOPERSVILLE STPCoopersville0.9 MGD (million gallons per day)2022
IMLAY CITY STPImlay City0.9 MGD (million gallons per day)2022
RICHMOND WWTPPalmer0.9 MGD (million gallons per day)2022
TITTABAWASSEE TWP STPFreeland0.9 MGD (million gallons per day)2022
ISHPEMING STPIshpeming0.9 MGD (million gallons per day)2022
BERRIEN SPRINGS STPBerrien Springs0.9 MGD (million gallons per day)2022
NEWBERRY STPNewberry0.9 MGD (million gallons per day)2022
Seneca WWTPSeneca0.9 MGD (million gallons per day)2022
Bonne Terre N.E. WWTPBonne Terre0.9 MGD (million gallons per day)2022
GERING WWTPGering0.9 MGD (million gallons per day)2022
SEWARD WWTPSeward0.9 MGD (million gallons per day)2022
ZUNI PUEBLO LAGOONSZuni0.9 MGD (million gallons per day)2022
Red River, Town of Wastewater Treatment PlantTaos0.9 MGD (million gallons per day)2022
GRANITE FALLS WWTPGranite Falls0.9 MGD (million gallons per day)2022
OLD FORT WWTPOld Fort0.9 MGD (million gallons per day)2022
Pleasant Valley RSD WWTP & SewersChillicothe0.9 MGD (million gallons per day)2022
Coldwater WWTP & Sewer SystemColdwater0.9 MGD (million gallons per day)2022
Knox Co Little Jelloway Creek WWTPMount Vernon0.9 MGD (million gallons per day)2022
Jamestown WWTP & Sewer SystemJamestown0.9 MGD (million gallons per day)2022
New Bremen WWTP & Sewer SystemNew Bremen0.9 MGD (million gallons per day)2022
SKIATOOK (HOMINY CREEK) WWTSkiatook0.9 MGD (million gallons per day)2022
PAULS VALLEY WWTPauls Valley0.9 MGD (million gallons per day)2022
WILBURTON PWA WWTWilburton0.9 MGD (million gallons per day)2022
COWETA WWTCoweta0.9 MGD (million gallons per day)2022
HOODLAND STPWelches0.9 MGD (million gallons per day)2022
FLORENCE STPFlorence0.9 MGD (million gallons per day)2022
JUNCTION CITY STPJunction City0.9 MGD (million gallons per day)2022
UMATILLA STPUmatilla0.9 MGD (million gallons per day)2022
WINCHESTER BAY STPWinchester0.9 MGD (million gallons per day)2022
ORWIGSBURG BORO STPOrwigsburg0.9 MGD (million gallons per day)2022
BCW&SA/Upper Berkeley WWTFSaint Stephen0.9 MGD (million gallons per day)2022
Dandridge STPDandridge0.9 MGD (million gallons per day)2022
ERIN STPErin0.9 MGD (million gallons per day)2022
Hartsville/Trousdale County STPHartsville0.9 MGD (million gallons per day)2022
West Warren/Viola STPMorrison0.9 MGD (million gallons per day)2022
Nueces River Authority - LeakeyUvalde0.9 MGD (million gallons per day)2022
TAFT STPTaft0.9 MGD (million gallons per day)2022
Seminole WWTPSeminole0.9 MGD (million gallons per day)2022
Eastland WWTPEastland0.9 MGD (million gallons per day)2022
Hooks WWTPHooks0.9 MGD (million gallons per day)2022
CLARKSVILLE STPClarksville0.9 MGD (million gallons per day)2022
San Augustine WWTPSan Augustine0.9 MGD (million gallons per day)2022
WOODVILLE SOUTH STPWoodville0.9 MGD (million gallons per day)2022
Rushwood WWTPHouston0.9 MGD (million gallons per day)2022
La Grange WWTPLa Grange0.9 MGD (million gallons per day)2022
Via Ranch WWTPHouston0.9 MGD (million gallons per day)2022
PLAIN CITYOgden0.9 MGD (million gallons per day)2022
NEPHINephi0.9 MGD (million gallons per day)2022
Swanton WWTFSwanton0.9 MGD (million gallons per day)2022
Spring Branch WWTPWaverly0.9 MGD (million gallons per day)2022
UNION PSD - 40TH STREET WWTPNitro0.9 MGD (million gallons per day)2022
DODGEVILLE STPDodgeville0.9 MGD (million gallons per day)2022
Teton Village WWTPTeton Village0.9 MGD (million gallons per day)2022
BLOOMING PRAIRIE WWTPBlooming Prairie0.899 MGD (million gallons per day)2022
Somerville LagoonSomerville0.895 MGD (million gallons per day)2022
LAMONI WWTPLamoni0.893 MGD (million gallons per day)2022
Corning WWTPCorning0.89 MGD (million gallons per day)2022
Lonoke WWTPLonoke0.89 MGD (million gallons per day)2022
Falfurrias WWTPFalfurrias0.89 MGD (million gallons per day)2022
GLACIAL LAKES SD WWTPSpicer0.889 MGD (million gallons per day)2022
SHEFFIELD STLSheffield0.888 MGD (million gallons per day)2022
NEW LONDON WWTPNew London0.885 MGD (million gallons per day)2022
EUTAW LAGOONEutaw0.88 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.