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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
Snoqualmie WWTPSnoqualmie0.72 MGD (million gallons per day)2022
Willapa Regional WWTPRaymond0.72 MGD (million gallons per day)2022
FLATWOODS CANOE RUN PSD WWTPGassaway0.72 MGD (million gallons per day)2022
Paris WWTPParis0.718 MGD (million gallons per day)2022
CLAY CENTER WWTPClay Center0.715 MGD (million gallons per day)2022
VINE GROVE STPVine Grove0.715 MGD (million gallons per day)2022
JACKSON WWTFJackson0.71 MGD (million gallons per day)2022
CARLYLE STP & COLLECTION SYSTEMCarlyle0.71 MGD (million gallons per day)2022
Falmouth Sewerage Collection System and WWTFNorth Falmouth0.71 MGD (million gallons per day)2022
Concordia N. LagoonConcordia0.71 MGD (million gallons per day)2022
Paulding WWTP & Sewer SystemPaulding0.71 MGD (million gallons per day)2022
Waynesville WWTP & Sewer SystemWaynesville0.71 MGD (million gallons per day)2022
MOUNT PLEASANT STPMount Pleasant0.71 MGD (million gallons per day)2022
Caldwell WWTPCaldwell0.71 MGD (million gallons per day)2022
Floresville WWTPFloresville0.71 MGD (million gallons per day)2022
Harris Co MUD #345 WWTPHouston0.71 MGD (million gallons per day)2022
KANABKanab0.71 MGD (million gallons per day)2022
Woodland Wastewater Treatment PlantWoodland0.71 MGD (million gallons per day)2022
BRILLION STPBrillion0.71 MGD (million gallons per day)2022
PLAINFIELD VILLAGE WPCFPlainfield0.707 MGD (million gallons per day)2022
KENNEBUNKPORT WWTFKennebunkport0.705 MGD (million gallons per day)2022
PINE ISLAND WWTPPine Island0.705 MGD (million gallons per day)2022
REMINGTON WWTPRemington0.704 MGD (million gallons per day)2022
NEHALEM BAY STPNehalem0.703 MGD (million gallons per day)2022
BROOKVILLE WWTPBrookville0.702 MGD (million gallons per day)2022
Kachina Village WWTFFlagstaff0.7 MGD (million gallons per day)2022
Colorado River Joint VentureParker0.7 MGD (million gallons per day)2022
Runyan Acres SID 211Sherwood0.7 MGD (million gallons per day)2022
Clarendon WWTPClarendon0.7 MGD (million gallons per day)2022
Brinkley WWTPBrinkley0.7 MGD (million gallons per day)2022
Calistoga WWTPCalistoga0.7 MGD (million gallons per day)2022
YUMA WWTPYuma0.7 MGD (million gallons per day)2022
WALSENBURG STPWalsenburg0.7 MGD (million gallons per day)2022
WEST JEFFERSON METRO DISTEvergreen0.7 MGD (million gallons per day)2022
MILLIKEN, Town ofMilliken0.7 MGD (million gallons per day)2022
LAUREL STPLaurel0.7 MGD (million gallons per day)2022
Players Club WWTFPonte Vedra Beach0.7 MGD (million gallons per day)2022
Lake Butler WWTFLake Butler0.7 MGD (million gallons per day)2022
OROFINO S/T PLANTOrofino0.7 MGD (million gallons per day)2022
ST. CHARLES WEST STPSaint Charles0.7 MGD (million gallons per day)2022
Eldorado WTFEldorado0.7 MGD (million gallons per day)2022
Pingree Grove, Village ofPingree Grove0.7 MGD (million gallons per day)2022
HAVANA STPHavana0.7 MGD (million gallons per day)2022
CARTERVILLE STWCarterville0.7 MGD (million gallons per day)2022
FORT BRANCH WWTPFort Branch0.7 MGD (million gallons per day)2022
HENRYVILLE STPHenryville0.7 MGD (million gallons per day)2022
GEORGETOWNGeorgetown0.7 MGD (million gallons per day)2022
KNOX WWTPKnox0.7 MGD (million gallons per day)2022
DUNKIRK WWTPDunkirk0.7 MGD (million gallons per day)2022
FERDINAND WWTPFerdinand0.7 MGD (million gallons per day)2022
PATOKA LAKE RWSD WWTPDubois0.7 MGD (million gallons per day)2022
KENTLAND STPKentland0.7 MGD (million gallons per day)2022
CLOVERDALE WWTPCloverdale0.7 MGD (million gallons per day)2022
HULL WWTPHull0.7 MGD (million gallons per day)2022
LAURENS WWTPLaurens0.7 MGD (million gallons per day)2022
SAC CITY WWTPSac City0.7 MGD (million gallons per day)2022
GOODLAND WWTPGoodland0.7 MGD (million gallons per day)2022
WELSH STPWelsh0.7 MGD (million gallons per day)2022
BREAUX BRIDGE STPBreaux Bridge0.7 MGD (million gallons per day)2022
INDEPENDENCE PONDIndependence0.7 MGD (million gallons per day)2022
KENTWOOD LAGOONKentwood0.7 MGD (million gallons per day)2022
BRUSLY STPBrusly0.7 MGD (million gallons per day)2022
Piney Orchard WRFOdenton0.7 MGD (million gallons per day)2022
SOLOMONS ISLAND WWTPLusby0.7 MGD (million gallons per day)2022
DENTON TWP WWTFPrudenville0.7 MGD (million gallons per day)2022
CROSWELL STPCroswell0.7 MGD (million gallons per day)2022
BIRCH RUN STPBirch Run0.7 MGD (million gallons per day)2022
BESSEMER STPBessemer0.7 MGD (million gallons per day)2022
OTSEGO STPOtsego0.7 MGD (million gallons per day)2022
SLEEPY EYE WWTPSleepy Eye0.7 MGD (million gallons per day)2022
BALDWYN POTWBaldwyn0.7 MGD (million gallons per day)2022
Ste Genevieve WWTPSainte Genevieve0.7 MGD (million gallons per day)2022
Milan WWTPMilan0.7 MGD (million gallons per day)2022
Buffalo WWTPBuffalo0.7 MGD (million gallons per day)2022
Ava WWTPAva0.7 MGD (million gallons per day)2022
GLASGOW WWTFGlasgow0.7 MGD (million gallons per day)2022
FALLS CITY WWTPFalls City0.7 MGD (million gallons per day)2022
WAYNE WWTPWayne0.7 MGD (million gallons per day)2022
Plymouth WWTFPlymouth0.7 MGD (million gallons per day)2022
Soccorro, City ofSocorro0.7 MGD (million gallons per day)2022
Washingtonville (V) WWTPWashingtonville0.7 MGD (million gallons per day)2022
Stamford (V) WWTPStamford0.7 MGD (million gallons per day)2022
Richfield Springs (V) Sewers & STPRichfield Springs0.7 MGD (million gallons per day)2022
Canisteo (V) WWTPCanisteo0.7 MGD (million gallons per day)2022
Seneca (Co) Willard WWTP and CS - SD#1Willard0.7 MGD (million gallons per day)2022
Middleport (V) STPMiddleport0.7 MGD (million gallons per day)2022
Mount Orab WWTP & Sewer SystemMount Orab0.7 MGD (million gallons per day)2022
MILLERSBURG BORO STPMillersburg0.7 MGD (million gallons per day)2022
LRBSA CLINTON TWP STPClinton0.7 MGD (million gallons per day)2022
LORIS WWTPLoris0.7 MGD (million gallons per day)2022
COPPERHILL STPCopperhill0.7 MGD (million gallons per day)2022
Waynesboro WWTPWaynesboro0.7 MGD (million gallons per day)2022
Cross Creek Ranch WWTPFulshear0.7 MGD (million gallons per day)2022
Haskell WWTPHaskell0.7 MGD (million gallons per day)2022
Post WWTPSherman0.7 MGD (million gallons per day)2022
Nolanville WWTPNolanville0.7 MGD (million gallons per day)2022
North Plant - GiddingsGiddings0.7 MGD (million gallons per day)2022
Jacksboro WWTPJacksboro0.7 MGD (million gallons per day)2022
Daingerfield WWTPDaingerfield0.7 MGD (million gallons per day)2022
Quitman WWTPQuitman0.7 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.