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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 GreenfieldGreenfield0.018 MGD (million gallons per day)2022
Fort Smith Water and Sewer DistrictHardin0.018 MGD (million gallons per day)2022
CARLETON WWTPCarleton0.018 MGD (million gallons per day)2022
NAPONEE WWTPNaponee0.018 MGD (million gallons per day)2022
Annsville (T) Taberg STP & OnsitesTaberg0.018 MGD (million gallons per day)2022
CAMDEN COUNTY WWTPSouth Mills0.018 MGD (million gallons per day)2022
Rome Village WWTP & collection systemRome0.018 MGD (million gallons per day)2022
Amesville Cluster Sewers and WWTPsAmesville0.018 MGD (million gallons per day)2022
GRADY COUNTY RWD #2 (AMBER)Amber0.018 MGD (million gallons per day)2022
BORING STPBoring0.018 MGD (million gallons per day)2022
Toyah STPToyah0.018 MGD (million gallons per day)2022
Arlington High School WWTFArlington0.018 MGD (million gallons per day)2022
Benson WWTFBenson0.018 MGD (million gallons per day)2022
FARMINGTON STPFarmington0.018 MGD (million gallons per day)2022
COALWOOD WWTPWelch0.018 MGD (million gallons per day)2022
COMA PSD - HELEN WWTPHelen0.018 MGD (million gallons per day)2022
CUSHING SD #1 - STPCushing0.018 MGD (million gallons per day)2022
WYEVILLE STPTomah0.018 MGD (million gallons per day)2022
KOSSUTH SD #2 STPFrancis Creek0.018 MGD (million gallons per day)2022
WESTBORO SD #1 - STPWestboro0.018 MGD (million gallons per day)2022
Gardner WSDWalsenburg0.017 MGD (million gallons per day)2022
DRAKESVILLE WWTPDrakesville0.017 MGD (million gallons per day)2022
FLORIS LAGOONFloris0.017 MGD (million gallons per day)2022
ST PAUL STPSaint Paul0.017 MGD (million gallons per day)2022
TORONTO WASTEWATERWheatland0.017 MGD (million gallons per day)2022
WEST CHESTER WWTPWest Chester0.017 MGD (million gallons per day)2022
WILLIAMSON WWTPWilliamson0.017 MGD (million gallons per day)2022
ROSE HILLRose Hill0.017 MGD (million gallons per day)2022
COATS WWTPCoats0.017 MGD (million gallons per day)2022
ISABEL WWTPIsabel0.017 MGD (million gallons per day)2022
RAYMOND WWTPRaymond0.017 MGD (million gallons per day)2022
NASHVILLE WWTPNashville0.017 MGD (million gallons per day)2022
GOFF WWTPGoff0.017 MGD (million gallons per day)2022
PT CO S D FOSTORIA WWTPWestmoreland0.017 MGD (million gallons per day)2022
ELSMORE WWTPElsmore0.017 MGD (million gallons per day)2022
WO CO I D #2 WWTPPiqua0.017 MGD (million gallons per day)2022
WILSEY WWTPWilsey0.017 MGD (million gallons per day)2022
ZURICH WWTPPlainville0.017 MGD (million gallons per day)2022
BISON WWTPBison0.017 MGD (million gallons per day)2022
HORACE WWTPTribune0.017 MGD (million gallons per day)2022
TYRO WWTPTyro0.017 MGD (million gallons per day)2022
LATHAM WWTPLatham0.017 MGD (million gallons per day)2022
LAROSE STPRaceland0.017 MGD (million gallons per day)2022
Chopticon High School WWTPMorganza0.017 MGD (million gallons per day)2022
WANDA WWTPWanda0.017 MGD (million gallons per day)2022
SOBIESKI WWTPSwan River0.017 MGD (million gallons per day)2022
ELKTON WWTPElkton0.017 MGD (million gallons per day)2022
CGCRCSD Cedar Meadows Subdivision WWTFJackson0.017 MGD (million gallons per day)2022
FCPWSD #3, Golden PondVilla Ridge0.017 MGD (million gallons per day)2022
FCPWSD #3, Pine Lake Estates SubdivisionGray Summit0.017 MGD (million gallons per day)2022
Flemington LagoonFlemington0.017 MGD (million gallons per day)2022
MELROSE COUNTY W & S DISTRICTMelrose0.017 MGD (million gallons per day)2022
BARTLETT WWTPBartlett0.017 MGD (million gallons per day)2022
SHUBERT WWTPShubert0.017 MGD (million gallons per day)2022
JANSEN WWTPJansen0.017 MGD (million gallons per day)2022
Athens (V) Brick Row STPAthens0.017 MGD (million gallons per day)2022
Schodack (T) S. Landing Sewers/STPSchodack Landing0.017 MGD (million gallons per day)2022
Clark Co KTK WWTPSpringfield0.017 MGD (million gallons per day)2022
GRAYSON WWTHenryetta0.017 MGD (million gallons per day)2022
Town of AuburnAuburn0.017 MGD (million gallons per day)2022
CHILI WWTPChili0.017 MGD (million gallons per day)2022
Anvik LagoonAnvik0.016 MGD (million gallons per day)2022
Amagon WWTPAmagon0.016 MGD (million gallons per day)2022
Posey County RSD - HarbortownMount Vernon0.016 MGD (million gallons per day)2022
LARRABEE WWTPLarrabee0.016 MGD (million gallons per day)2022
MACKSBURG WWTPMacksburg0.016 MGD (million gallons per day)2022
ROCK FALLS WWTPRock Falls0.016 MGD (million gallons per day)2022
LORRAINE WWTPLorraine0.016 MGD (million gallons per day)2022
SHARON WWTPSharon0.016 MGD (million gallons per day)2022
WHEATON WWTPOnaga0.016 MGD (million gallons per day)2022
GE CO S D #4 WWTPJunction City0.016 MGD (million gallons per day)2022
PARADISE WWTPParadise0.016 MGD (million gallons per day)2022
GOVE WWTPGove0.016 MGD (million gallons per day)2022
COOLIDGE WWTPCoolidge0.016 MGD (million gallons per day)2022
ZENDA WWTPZenda0.016 MGD (million gallons per day)2022
EAST MACHIAS WWTPEast Machias0.016 MGD (million gallons per day)2022
Roscoe WWTPRoscoe0.016 MGD (million gallons per day)2022
WALTERS WWTFConger0.016 MGD (million gallons per day)2022
SCCPWSD #2 Sycamore Creek WWTPNew Melle0.016 MGD (million gallons per day)2022
Wentworth WWTPWentworth0.016 MGD (million gallons per day)2022
FCPWSD #3, Ad Deum SubdivisionPacific0.016 MGD (million gallons per day)2022
Bucklin West WWTPBucklin0.016 MGD (million gallons per day)2022
DIXONDixon0.016 MGD (million gallons per day)2022
VENANGO WWTPVenango0.016 MGD (million gallons per day)2022
Seward (T) STPCobleskill0.016 MGD (million gallons per day)2022
Marion Co North Quarry Subdivision WWTPMarion0.016 MGD (million gallons per day)2022
Knox County Brandon WWTPMount Vernon0.016 MGD (million gallons per day)2022
GRADY CO #1 (POCASSET) WWTPocasset0.016 MGD (million gallons per day)2022
PENSACOLA PWA WWTLangley0.016 MGD (million gallons per day)2022
LIBERTY SCHOOL DISTRICT 362Spangle0.016 MGD (million gallons per day)2022
OAK HILL - INDUSTRIAL PARK WWTPMinden0.016 MGD (million gallons per day)2022
PAGE KINCAID PSD - BEARDS FORK TPKincaid0.016 MGD (million gallons per day)2022
MARSHALL CO SD - SENTIMENTAL WWTPGlen Dale0.016 MGD (million gallons per day)2022
MARSHALL CO SD - RUSTIC HILLS WWTPGlen Dale0.016 MGD (million gallons per day)2022
MARSHALL CO SD - PINE KNOLL WWTPGlen Dale0.016 MGD (million gallons per day)2022
Whittier WWTPWhittier0.015 MGD (million gallons per day)2022
PCRWRD Mount Lemmon WWTFMount Lemmon0.015 MGD (million gallons per day)2022
Nimmons WWTPRector0.015 MGD (million gallons per day)2022
Roe WWTPRoe0.015 MGD (million gallons per day)2022
Delta County, Horizons Healthcare and Retirement CommunityEckert0.015 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.