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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
LAFAYETTE STPLafayette1.5 MGD (million gallons per day)2022
SOUTH PITTSBURG STPSouth Pittsburg1.5 MGD (million gallons per day)2022
SWEETWATER STPSweetwater1.5 MGD (million gallons per day)2022
Kingwood West WWTPPorter1.5 MGD (million gallons per day)2022
Steep Bank/Flat Bank WWTPSugar Land1.5 MGD (million gallons per day)2022
Wharton WWTP #1Wharton1.5 MGD (million gallons per day)2022
Bull Hide Creek WWTPWaco1.5 MGD (million gallons per day)2022
Pecan Branch WWTPGeorgetown1.5 MGD (million gallons per day)2022
Henderson WWTPLampasas1.5 MGD (million gallons per day)2022
Marble Falls WWTPMarble Falls1.5 MGD (million gallons per day)2022
Sabine Creek Regional WWTPWylie1.5 MGD (million gallons per day)2022
Wichita Falls - Northside WWTPWichita Falls1.5 MGD (million gallons per day)2022
Alta Loma WWTPSanta Fe1.5 MGD (million gallons per day)2022
Cedar Bayou WWTPHouston1.5 MGD (million gallons per day)2022
Harris Co MUD #203 WWTPHouston1.5 MGD (million gallons per day)2022
Cotton Bayou WWTPMont Belvieu1.5 MGD (million gallons per day)2022
Winnie - Stowell WWTPWinnie1.5 MGD (million gallons per day)2022
Castlewood WWTPHouston1.5 MGD (million gallons per day)2022
Hasting Greens Plant #2Houston1.5 MGD (million gallons per day)2022
Dinner Creek WWTPHouston1.5 MGD (million gallons per day)2022
Mill Ridge WWTPHouston1.5 MGD (million gallons per day)2022
Timberlane WWTPHouston1.5 MGD (million gallons per day)2022
Tomball WWTPTomball1.5 MGD (million gallons per day)2022
Tomball South WWTPTomball1.5 MGD (million gallons per day)2022
Winchester Country WWTPHouston1.5 MGD (million gallons per day)2022
Walden WWTPConroe1.5 MGD (million gallons per day)2022
Highway 46 WWTPNew Braunfels1.5 MGD (million gallons per day)2022
Buda WWTPBuda1.5 MGD (million gallons per day)2022
Cuero WWTPCuero1.5 MGD (million gallons per day)2022
Gonzales WWTPGonzales1.5 MGD (million gallons per day)2022
GRANTSVILLEGrantsville1.5 MGD (million gallons per day)2022
SALEMSalem1.5 MGD (million gallons per day)2022
RICHFIELDRichfield1.5 MGD (million gallons per day)2022
STANSBURY PARKTooele1.5 MGD (million gallons per day)2022
EMPORIA STPEmporia1.5 MGD (million gallons per day)2022
PURCELLVILLE STPPurcellville1.5 MGD (million gallons per day)2022
CAROLINE CO. REG. WWTPRuther Glen1.5 MGD (million gallons per day)2022
STANWOOD S/T FACILITYStanwood1.5 MGD (million gallons per day)2022
WEST RICHLAND POTWWest Richland1.5 MGD (million gallons per day)2022
BERK CO PSSD - INWOOD WWTPMartinsburg1.5 MGD (million gallons per day)2022
GREEN VALLEY-GLENWOOD PSD WWTPPrinceton1.5 MGD (million gallons per day)2022
SUMMERSVILLE WWTPSummersville1.5 MGD (million gallons per day)2022
LUBECK PSD WWTPWashington1.5 MGD (million gallons per day)2022
BERLIN STPBerlin1.5 MGD (million gallons per day)2022
MUKWONAGO STPMukwonago1.5 MGD (million gallons per day)2022
PLYMOUTH WWTPPlymouth1.5 MGD (million gallons per day)2022
SLINGER STPSlinger1.5 MGD (million gallons per day)2022
WAUPACA WWTPWaupaca1.5 MGD (million gallons per day)2022
DOUGLAS LAGOONDouglas1.5 MGD (million gallons per day)2022
CODY LAGOONCody1.5 MGD (million gallons per day)2022
PINEDALE LAGOONPinedale1.5 MGD (million gallons per day)2022
GREEN RIVER LAGOONGreen River1.5 MGD (million gallons per day)2022
JOHNSTOWN STPJohnstown1.49 MGD (million gallons per day)2022
HAILEY WOODSIDE S/T FACILITYHailey1.48 MGD (million gallons per day)2022
CARLISLE WWTPCarlisle1.48 MGD (million gallons per day)2022
Middleborough Sewerage Collection System and WPCFMiddleboro1.48 MGD (million gallons per day)2022
Alpine WWTPAlpine1.48 MGD (million gallons per day)2022
ENUMCLAW WWTPEnumclaw1.48 MGD (million gallons per day)2022
COLUMBIA STPColumbia1.47 MGD (million gallons per day)2022
COLUMBIA POTW SOUTHColumbia1.47 MGD (million gallons per day)2022
OAKDALE WWT FACILITYOakdale1.46 MGD (million gallons per day)2022
WINNFIELD STPWinnfield1.46 MGD (million gallons per day)2022
Dahlonega WPCPDahlonega1.455 MGD (million gallons per day)2022
Ward WWTPWard1.45 MGD (million gallons per day)2022
Maynard Sewerage Collection System and WPCFMaynard1.45 MGD (million gallons per day)2022
ALLIANCE, WWTPAlliance1.45 MGD (million gallons per day)2022
COLVILLE STPColville1.45 MGD (million gallons per day)2022
FONTANA-WALWORTH WPCC WWTPFontana1.45 MGD (million gallons per day)2022
Bridgewater Sewerage Collection System and WWTFBridgewater1.44 MGD (million gallons per day)2022
Wellston North WWTP & Sewer SystemWellston1.44 MGD (million gallons per day)2022
GLENPOOL USA WWTGlenpool1.44 MGD (million gallons per day)2022
Cranbrook WWTPHouston1.44 MGD (million gallons per day)2022
PORT TOWNSEND STPPort Townsend1.44 MGD (million gallons per day)2022
BIRCH BAY STPBlaine1.44 MGD (million gallons per day)2022
MOUNT VERNON WWTPMount Vernon1.436 MGD (million gallons per day)2022
SOUTH BAY WWTPSouth Bay1.42 MGD (million gallons per day)2022
Pleasanton WWTPPleasanton1.42 MGD (million gallons per day)2022
Red River Wastewater Authority STPStanton1.411 MGD (million gallons per day)2022
TALLASSEE LAGOONTallassee1.4 MGD (million gallons per day)2022
HEALDSBURG WWTFHealdsburg1.4 MGD (million gallons per day)2022
ATASCADERO WWTFAtascadero1.4 MGD (million gallons per day)2022
Live Oak WWTPLive Oak1.4 MGD (million gallons per day)2022
DIXON WWTFDixon1.4 MGD (million gallons per day)2022
Corning WWTPCorning1.4 MGD (million gallons per day)2022
Auburndale Allred WWTPAuburndale1.4 MGD (million gallons per day)2022
Deltona Lakes WRFDeltona1.4 MGD (million gallons per day)2022
Bonifay WWTFBonifay1.4 MGD (million gallons per day)2022
Northeast WPCP (City of Forsyth)Forsyth1.4 MGD (million gallons per day)2022
PARIS-SOUTH STPParis1.4 MGD (million gallons per day)2022
CARMI STPCarmi1.4 MGD (million gallons per day)2022
WEST FRANKFORT STPWest Frankfort1.4 MGD (million gallons per day)2022
BREMEN WWTPBremen1.4 MGD (million gallons per day)2022
FRENCH LICK WWTPWest Baden Springs1.4 MGD (million gallons per day)2022
GLENWOOD WWTPGlenwood1.4 MGD (million gallons per day)2022
PAOLA WWTPPaola1.4 MGD (million gallons per day)2022
RUSSELL WWTPRussell1.4 MGD (million gallons per day)2022
MONTICELLO STPMonticello1.4 MGD (million gallons per day)2022
JENA SEWERAGE SYSTEMJena1.4 MGD (million gallons per day)2022
PONCHATOULA PONDPonchatoula1.4 MGD (million gallons per day)2022
BRUNSWICK WWTPBrunswick1.4 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.