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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
Fishkill (V) WWTPFishkill0.45 MGD (million gallons per day)2022
Florida (V) WWTP & Collection SystemFlorida0.45 MGD (million gallons per day)2022
Webb (T) Old Forge SD STP and SewersOld Forge0.45 MGD (million gallons per day)2022
Adams (V) WWTPAdams0.45 MGD (million gallons per day)2022
Heuvelton (V) STPHeuvelton0.45 MGD (million gallons per day)2022
Greene (V) STPGreene0.45 MGD (million gallons per day)2022
Central Square (V) WWTPCentral Square0.45 MGD (million gallons per day)2022
Holley (V) WWTPHolley0.45 MGD (million gallons per day)2022
YANCEYVILLE WWTPYanceyville0.45 MGD (million gallons per day)2022
ROSE HILL WWTPRose Hill0.45 MGD (million gallons per day)2022
Gambier WWTP & Sewer SystemGambier0.45 MGD (million gallons per day)2022
Piketon WWTP & Collection SystemPiketon0.45 MGD (million gallons per day)2022
Plymouth WWTP & Sewer SystemPlymouth0.45 MGD (million gallons per day)2022
Scioto Co West Portsmouth WWTP & SewersWest Portsmouth0.45 MGD (million gallons per day)2022
Spencerville WWTP & Sewer SystemSpencerville0.45 MGD (million gallons per day)2022
Windham WWTP & Sewer SystemWindham0.45 MGD (million gallons per day)2022
BANDON STPBandon0.45 MGD (million gallons per day)2022
UNION CITY BORO STPUnion City0.45 MGD (million gallons per day)2022
MCEWEN STPMc Ewen0.45 MGD (million gallons per day)2022
Crane WWTPCrane0.45 MGD (million gallons per day)2022
REFUGIO STPRefugio0.45 MGD (million gallons per day)2022
Oakwilde WWTPHouston0.45 MGD (million gallons per day)2022
WEST STPWest0.45 MGD (million gallons per day)2022
Dublin WWTPDublin0.45 MGD (million gallons per day)2022
MERIDIAN PLANT #2Meridian0.45 MGD (million gallons per day)2022
Linden - Beach Creek WWTPLinden0.45 MGD (million gallons per day)2022
Eldorado WWTPHouston0.45 MGD (million gallons per day)2022
Westland Creek WWTPKaty0.45 MGD (million gallons per day)2022
Ranch Country WWTPHouston0.45 MGD (million gallons per day)2022
Lytle WWTPLytle0.45 MGD (million gallons per day)2022
Castroville WWTPCastroville0.45 MGD (million gallons per day)2022
FILLMOREFillmore0.45 MGD (million gallons per day)2022
MORGAN CITYMorgan0.45 MGD (million gallons per day)2022
EAST CARBON CITYEast Carbon0.45 MGD (million gallons per day)2022
Enosburg Falls WWTFEnosburg Falls0.45 MGD (million gallons per day)2022
Woodstock WWTFWoodstock0.45 MGD (million gallons per day)2022
West Rutland WWTFWest Rutland0.45 MGD (million gallons per day)2022
CHATHAM STPChatham0.45 MGD (million gallons per day)2022
HOT SPRINGS REG.STPHot Springs0.45 MGD (million gallons per day)2022
DOC-Nottoway Correctional CenterBurkeville0.45 MGD (million gallons per day)2022
KITTITAS STPKittitas0.45 MGD (million gallons per day)2022
STEVENSON STPStevenson0.45 MGD (million gallons per day)2022
GRANTSVILLE WWTPGrantsville0.45 MGD (million gallons per day)2022
CHESTER WWTPChester0.45 MGD (million gallons per day)2022
CROSS PLAINS STPCross Plains0.45 MGD (million gallons per day)2022
RANDOM LAKE STPRandom Lake0.45 MGD (million gallons per day)2022
GILMAN STLGilman0.448 MGD (million gallons per day)2022
ADA WWTPAda0.448 MGD (million gallons per day)2022
New Concord WWTP & Sewer SystemNew Concord0.448 MGD (million gallons per day)2022
Roberta WPCPRoberta0.447 MGD (million gallons per day)2022
HARMONY GROVE-OKEE WWTPLodi0.446 MGD (million gallons per day)2022
Windham (T) WWTP & Collection SystemWindham0.445 MGD (million gallons per day)2022
REMSEN WWTPRemsen0.444 MGD (million gallons per day)2022
MANSON WWTPManson0.442 MGD (million gallons per day)2022
PEOSTA WWTPPeosta0.442 MGD (million gallons per day)2022
GLENNS FERRY SEWAGE TREATGlenns Ferry0.44 MGD (million gallons per day)2022
DALE WWTPDale0.44 MGD (million gallons per day)2022
YATES CENTER WWTPYates Center0.44 MGD (million gallons per day)2022
WEST PONDBastrop0.44 MGD (million gallons per day)2022
DUNDEE STPDundee0.44 MGD (million gallons per day)2022
APPLETON WWTPAppleton0.44 MGD (million gallons per day)2022
EAST HELENA WWTPEast Helena0.44 MGD (million gallons per day)2022
BROKEN BOW WWTPBroken Bow0.44 MGD (million gallons per day)2022
East Fishkill (T) Sagamore SD WWTPHopewell Junction0.44 MGD (million gallons per day)2022
LANGDON WASTEWATERLangdon0.44 MGD (million gallons per day)2022
DEWEY PWA WWTDewey0.44 MGD (million gallons per day)2022
HOLLIS PWA WWTHollis0.44 MGD (million gallons per day)2022
TISHOMINGO WWTTishomingo0.44 MGD (million gallons per day)2022
Canadian WWTPCanadian0.44 MGD (million gallons per day)2022
Hamilton WWTPHamilton0.44 MGD (million gallons per day)2022
Cisco WWTPCisco0.44 MGD (million gallons per day)2022
Lone Star WWTPLone Star0.44 MGD (million gallons per day)2022
Shelburne WWTF No 1 (Bay)Shelburne0.44 MGD (million gallons per day)2022
COWICHE REGIONAL POTWCowiche0.44 MGD (million gallons per day)2022
OOSTBURG STPOostburg0.44 MGD (million gallons per day)2022
JACKSON CSJackson0.439 MGD (million gallons per day)2022
FAYETTE WWTPFayette0.438 MGD (million gallons per day)2022
Shreve WWTP & Sewer SystemShreve0.438 MGD (million gallons per day)2022
ADAMS WWTPFriendship0.436 MGD (million gallons per day)2022
WINAMAC WWTPWinamac0.434 MGD (million gallons per day)2022
WYOMING WWTPWyoming0.434 MGD (million gallons per day)2022
MISSOURI VALLEY STPMissouri Valley0.433 MGD (million gallons per day)2022
Taylor WWTFTaylor0.43 MGD (million gallons per day)2022
Cottonwood WWTPCottonwood0.43 MGD (million gallons per day)2022
WYOMING STPWyoming0.43 MGD (million gallons per day)2022
FLORA WWTPFlora0.43 MGD (million gallons per day)2022
MECHANICSVILLE WWTPMechanicsville0.43 MGD (million gallons per day)2022
WALFORD WWTPWalford0.43 MGD (million gallons per day)2022
ORTONVILLE WWTPOrtonville0.43 MGD (million gallons per day)2022
MOTLEY WWTFMotley0.43 MGD (million gallons per day)2022
CGCRCSD Fruitland WWTFJackson0.43 MGD (million gallons per day)2022
Licking WWTPLicking0.43 MGD (million gallons per day)2022
Warwick (T) SD#1-Wickham Lake WWTPWarwick0.43 MGD (million gallons per day)2022
Liberty (T) Swan Lake S.D.Liberty0.43 MGD (million gallons per day)2022
Sharon Springs (V) WWTPSharon Springs0.43 MGD (million gallons per day)2022
Norwood (V) STPNorwood0.43 MGD (million gallons per day)2022
Commercial Point WWTP & SewersCommercial Point0.43 MGD (million gallons per day)2022
ROGUE RIVER STPRogue River0.43 MGD (million gallons per day)2022
Premont WWTPPremont0.43 MGD (million gallons per day)2022
Mount Vernon WWTPMount Vernon0.43 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.