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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
Charterwood WWTPHouston0.6 MGD (million gallons per day)2022
Bammel Village WWTPHouston0.6 MGD (million gallons per day)2022
Mills Road MUD WWTPHouston0.6 MGD (million gallons per day)2022
North Belt UD WWTPHouston0.6 MGD (million gallons per day)2022
Westbourne WWTPTomball0.6 MGD (million gallons per day)2022
Prestonwood Forest WWTPHouston0.6 MGD (million gallons per day)2022
Trail of the Lakes WWTPHouston0.6 MGD (million gallons per day)2022
Woodcreek WWTPHouston0.6 MGD (million gallons per day)2022
Big Lake WWTPBig Lake0.6 MGD (million gallons per day)2022
Harris Co MUD #286 WWTPHouston0.6 MGD (million gallons per day)2022
DELTADelta0.6 MGD (million gallons per day)2022
Manchester WWTFManchester0.6 MGD (million gallons per day)2022
HRSD West Point STPWest Point0.6 MGD (million gallons per day)2022
Black Swamp WWTPWaverly0.6 MGD (million gallons per day)2022
CHASE CITY REGIONAL STPChase City0.6 MGD (million gallons per day)2022
STUART STPStuart0.6 MGD (million gallons per day)2022
RUTLEDGE CREEK WWTPAmherst0.6 MGD (million gallons per day)2022
KENBRIDGE STPKenbridge0.6 MGD (million gallons per day)2022
PENNINGTON GAP STPPennington Gap0.6 MGD (million gallons per day)2022
Ruckersville CSRuckersville0.6 MGD (million gallons per day)2022
MATTAWA WWTPMattawa0.6 MGD (million gallons per day)2022
COLFAX STPColfax0.6 MGD (million gallons per day)2022
GOLDENDALE POTWGoldendale0.6 MGD (million gallons per day)2022
GHCPSD - WEST MILFORD WWTPLost Creek0.6 MGD (million gallons per day)2022
SALEM WWTPSalem0.6 MGD (million gallons per day)2022
SISSONVILLE WWTPCharleston0.6 MGD (million gallons per day)2022
PADEN CITY WWTPPaden City0.6 MGD (million gallons per day)2022
DENMARK WWTPDenmark0.6 MGD (million gallons per day)2022
FREDONIA WWTPFredonia0.6 MGD (million gallons per day)2022
STANLEY WWTPStanley0.6 MGD (million gallons per day)2022
TOMAHAWK WWTPIrma0.6 MGD (million gallons per day)2022
Northern Moraine Utility Com. WWTPGlenbeulah0.6 MGD (million gallons per day)2022
LYMAN LAGOONFort Bridger0.6 MGD (million gallons per day)2022
HEMPSTEAD STPHempstead0.599 MGD (million gallons per day)2022
STANWOOD WWTPStanwood0.597 MGD (million gallons per day)2022
BRODHEAD STPBrodhead0.597 MGD (million gallons per day)2022
WATERVILLE WWTPWaterville0.595 MGD (million gallons per day)2022
Vandalia WWTPVandalia0.593 MGD (million gallons per day)2022
Earle WWTPEarle0.59 MGD (million gallons per day)2022
MALAD CITY STPMalad City0.59 MGD (million gallons per day)2022
GRANGER WWTPGranger0.59 MGD (million gallons per day)2022
Marion Sewerage Collection System and WPCFMarion0.59 MGD (million gallons per day)2022
LONSDALE WWTPLonsdale0.59 MGD (million gallons per day)2022
ODELL STPOdell0.59 MGD (million gallons per day)2022
BOYKINS STPBoykins0.59 MGD (million gallons per day)2022
BEDFORD WWTPBedford0.589 MGD (million gallons per day)2022
Dresden LagoonDresden0.589 MGD (million gallons per day)2022
WILLIAMSBURG STPWilliamsburg0.585 MGD (million gallons per day)2022
LAKEFIELD WWTPLakefield0.582 MGD (million gallons per day)2022
HORICON WWTPHoricon0.582 MGD (million gallons per day)2022
Piggott WWTPPiggott0.58 MGD (million gallons per day)2022
England WWTPEngland0.58 MGD (million gallons per day)2022
DOS PALOS STPDos Palos0.58 MGD (million gallons per day)2022
West Point STPSan Andreas0.58 MGD (million gallons per day)2022
DELHI STPDelhi0.58 MGD (million gallons per day)2022
Eatonton East WPCPEatonton0.58 MGD (million gallons per day)2022
GIBSON CITY STPGibson City0.58 MGD (million gallons per day)2022
LIBERTY WWTPLiberty0.58 MGD (million gallons per day)2022
GREENTOWN WWTPGreentown0.58 MGD (million gallons per day)2022
EPWORTH WWTPEpworth0.58 MGD (million gallons per day)2022
STRAWBERRY PT SOUTH WWTPStrawberry Point0.58 MGD (million gallons per day)2022
DEXTER STPDexter0.58 MGD (million gallons per day)2022
Bourbon WWTPBourbon0.58 MGD (million gallons per day)2022
BEULAH WASTEWATERBeulah0.58 MGD (million gallons per day)2022
TWIN BORO STPMifflin0.58 MGD (million gallons per day)2022
MULESHOE STPMuleshoe0.58 MGD (million gallons per day)2022
Hickory Creek WWTPHouston0.58 MGD (million gallons per day)2022
BLACK RIVER FALLS STPBlack River Falls0.58 MGD (million gallons per day)2022
GENOA CITY WWTPGenoa City0.58 MGD (million gallons per day)2022
SEYMOUR WWTPSeymour0.58 MGD (million gallons per day)2022
LOVELL LAGOONLovell0.58 MGD (million gallons per day)2022
Portage Co Twin Lakes WWTPKent0.579 MGD (million gallons per day)2022
MARSHVILLE WWTPMarshville0.576 MGD (million gallons per day)2022
BETSIE LAKE UNTILIES AUTHFrankfort0.575 MGD (million gallons per day)2022
Three Lakes MUD # 1 WWTPHouston0.575 MGD (million gallons per day)2022
Bull Shoals WWTPBull Shoals0.573 MGD (million gallons per day)2022
BRUCETON WASTEWATER LAGOONBruceton0.572 MGD (million gallons per day)2022
Santa Rosa WWTPSanta Rosa0.572 MGD (million gallons per day)2022
NORTH WEBSTER WWTPNorth Webster0.571 MGD (million gallons per day)2022
Cambridge-Oakland WW CommissionCambridge0.571 MGD (million gallons per day)2022
DELAWARE CITY STPNew Castle0.57 MGD (million gallons per day)2022
Stock Island/Boca ChicaKey West0.57 MGD (million gallons per day)2022
BYRON STPByron0.57 MGD (million gallons per day)2022
St Leon WWTPWest Harrison0.57 MGD (million gallons per day)2022
BLISSFIELD STPBlissfield0.57 MGD (million gallons per day)2022
CALEDONIA WWTPCaledonia0.57 MGD (million gallons per day)2022
POJOAQUE PUEBLO STPSanta Fe0.57 MGD (million gallons per day)2022
Sodus Point (V) WWTPSodus Point0.57 MGD (million gallons per day)2022
DRUMRIGHT UT WWTDrumright0.57 MGD (million gallons per day)2022
EAGLE RIVER STPEagle River0.57 MGD (million gallons per day)2022
MARSHALL STPMarshall0.57 MGD (million gallons per day)2022
ONAWA, WWTPOnawa0.568 MGD (million gallons per day)2022
Lincoln CountyHugo0.566 MGD (million gallons per day)2022
ALTA WWTPAlta0.566 MGD (million gallons per day)2022
LA PORTE CITY WWTPLa Porte City0.566 MGD (million gallons per day)2022
MITCHELL WWTPMitchell0.565 MGD (million gallons per day)2022
Anthony WWTPAnthony0.565 MGD (million gallons per day)2022
Lone Grove (Main) WWTPLone Grove0.564 MGD (million gallons per day)2022
Portageville WWTPPortageville0.561 MGD (million gallons per day)2022
Camden South WWTPCamden0.56 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.