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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
JEA Mandarin WRFJacksonville8.75 MGD (million gallons per day)2022
SCHERERVILLE STPSchererville8.75 MGD (million gallons per day)2022
ALBANY-MILLERSBURG WATER RECLAMATION FACILITYAlbany8.7 MGD (million gallons per day)2022
LOWER STROUBLES CRK STPBlacksburg8.67 MGD (million gallons per day)2022
Northampton Sewerage Collection System and WWTFNorthampton8.65 MGD (million gallons per day)2022
KISHWAUKEE WRD WWTPDekalb8.63 MGD (million gallons per day)2022
ELK RIVER WWTFEureka8.6 MGD (million gallons per day)2022
ALEXANDER CITY SUGAR CREEK WWTPAlexander City8.5 MGD (million gallons per day)2022
North Little Rock - White Oak BayouNorth Little Rock8.5 MGD (million gallons per day)2022
Livermore WRPLivermore8.5 MGD (million gallons per day)2022
Lodi WPCFLodi8.5 MGD (million gallons per day)2022
Fremont SD - Rainbow Park WWTPCanon City8.5 MGD (million gallons per day)2022
NORWICH WPCFNorwich8.5 MGD (million gallons per day)2022
TRAVERSE CITY REG STPTraverse City8.5 MGD (million gallons per day)2022
Neptune Township (TNSA) - CS/STPNeptune8.5 MGD (million gallons per day)2022
Middletown (C) WWTPMiddletown8.5 MGD (million gallons per day)2022
Greene Co Beavercreek WWTP & SewersDayton8.5 MGD (million gallons per day)2022
ENID WWTEnid8.5 MGD (million gallons per day)2022
Medio Creek WWTPSan Antonio8.5 MGD (million gallons per day)2022
CENTRAL DAVIS SDKaysville8.5 MGD (million gallons per day)2022
Heart of the Valley MSDKaukauna8.5 MGD (million gallons per day)2022
Centennial Water and Sanitation DistrictLittleton8.48 MGD (million gallons per day)2022
GRAND FORKS WASTEWATERGrand Forks8.476 MGD (million gallons per day)2022
AUSTIN WWTPAustin8.475 MGD (million gallons per day)2022
Huntsville Aldridge Creek WWTPHuntsville8.4 MGD (million gallons per day)2022
Paradise, Town ofMagalia8.4 MGD (million gallons per day)2022
Taunton Sewerage Collection System and WWTFTaunton8.4 MGD (million gallons per day)2022
UPPER MORELAND-HATBORO JNT SEWWillow Grove8.37 MGD (million gallons per day)2022
ROANOKE RAPIDS S.D.Weldon8.34 MGD (million gallons per day)2022
Benton WWTPBenton8.3 MGD (million gallons per day)2022
Tifton New River WPCPTifton8.3 MGD (million gallons per day)2022
HUTCHINSON WWTPHutchinson8.3 MGD (million gallons per day)2022
TRYON CREEK STPLake Oswego8.3 MGD (million gallons per day)2022
MADISON WWTPMadison8.25 MGD (million gallons per day)2022
GTR POTTSVILLE AREA - MAIN STPPottsville8.21 MGD (million gallons per day)2022
MANCHESTER WPCFManchester8.2 MGD (million gallons per day)2022
MILFORD - HOUSATONIC WPCFMilford8.2 MGD (million gallons per day)2022
ECUA- Bayou Marcus WRFPensacola8.2 MGD (million gallons per day)2022
Landis Sewerage Authority - CS/STPVineland8.2 MGD (million gallons per day)2022
Rio Rancho, City of WWTP #2Rio Rancho8.2 MGD (million gallons per day)2022
NEENAH-MENASHA SC WWTPMenasha8.2 MGD (million gallons per day)2022
WAUSAU WWTPWausau8.2 MGD (million gallons per day)2022
Fox West WWTPNeenah8.2 MGD (million gallons per day)2022
WARMINSTER STPWarminster8.18 MGD (million gallons per day)2022
Cambridge WWTF & Coll. Sys.Cambridge8.1 MGD (million gallons per day)2022
Rutland City WWTFRutland8.1 MGD (million gallons per day)2022
BLUEFIELD Westside WWTPBluefield8.1 MGD (million gallons per day)2022
Roswell, City of WWTPRoswell8.05 MGD (million gallons per day)2022
Fairbanks WWTPFairbanks8 MGD (million gallons per day)2022
MESA SOUTHEAST WRPMesa8 MGD (million gallons per day)2022
Porterville, City ofPorterville8 MGD (million gallons per day)2022
Selma-Kingsburg-Fowler CSD WWTFKingsburg8 MGD (million gallons per day)2022
EL CENTRO WWTFEl Centro8 MGD (million gallons per day)2022
Western Riverside Co Reg WWTPCorona8 MGD (million gallons per day)2022
Yucaipa Valley WD WWTPYucaipa8 MGD (million gallons per day)2022
Lake Elsinore Regional WWTPLake Elsinore8 MGD (million gallons per day)2022
4S Ranch Wastewater Treatment PlantSan Diego8 MGD (million gallons per day)2022
South Adams County WSDHenderson8 MGD (million gallons per day)2022
KILLINGLY WPCFDanielson8 MGD (million gallons per day)2022
WALLINGFORD WPCFWallingford8 MGD (million gallons per day)2022
Central County WRFSarasota8 MGD (million gallons per day)2022
Apopka WRF - Project ArrowApopka8 MGD (million gallons per day)2022
BCUD/South Beaches WWTFMelbourne Beach8 MGD (million gallons per day)2022
Bartow WRFBartow8 MGD (million gallons per day)2022
Lakeland Northside WRFLakeland8 MGD (million gallons per day)2022
VENICE EAST SIDE WWTPVenice8 MGD (million gallons per day)2022
ORMOND BEACH WRFOrmond Beach8 MGD (million gallons per day)2022
Bethelview WPCPCumming8 MGD (million gallons per day)2022
Walnut Creek WPCPMcdonough8 MGD (million gallons per day)2022
POCATELLO STPPocatello8 MGD (million gallons per day)2022
ELMHURST WWTP & COLLECTION SYSTEMElmhurst8 MGD (million gallons per day)2022
BELLEVILLE STP #1Belleville8 MGD (million gallons per day)2022
ROCK ISLAND MAIN STPRock Island8 MGD (million gallons per day)2022
FISHERS WWTPFishers8 MGD (million gallons per day)2022
SHELBYVILLE WWTPShelbyville8 MGD (million gallons per day)2022
Richmond - Otter Creek WWTPRichmond8 MGD (million gallons per day)2022
IRVINE STPIrvine8 MGD (million gallons per day)2022
HAMMOND NORTH STPHammond8 MGD (million gallons per day)2022
HOUMA S REG TRTMT PLTHouma8 MGD (million gallons per day)2022
THIBODAUX WWTPThibodaux8 MGD (million gallons per day)2022
AUGUSTA SEWAGE TPAugusta8 MGD (million gallons per day)2022
SAULT STE MARIE STPSault Sainte Marie8 MGD (million gallons per day)2022
Western Monmouth UA - Pine Brook STP/CSEnglishtown8 MGD (million gallons per day)2022
Nassau Co Glen Cove (C) STPGlen Cove8 MGD (million gallons per day)2022
Haverstraw Joint Regional STPWest Haverstraw8 MGD (million gallons per day)2022
Watertown (C) WWTPWatertown8 MGD (million gallons per day)2022
Utley Creek WRFHolly Springs8 MGD (million gallons per day)2022
Marysville WRF & Sewer SystemMarysville8 MGD (million gallons per day)2022
Newark WWTP & Sewer SystemNewark8 MGD (million gallons per day)2022
Oregon WWTP & Sewer SystemOregon8 MGD (million gallons per day)2022
Perrysburg WWTP & Sewer SystemPerrysburg8 MGD (million gallons per day)2022
Summit Co Fishcreek WWTP #25Stow8 MGD (million gallons per day)2022
EDMOND COFFEE CREEK WWTEdmond8 MGD (million gallons per day)2022
LEBANON CITY STPLebanon8 MGD (million gallons per day)2022
Middlefork STPJackson8 MGD (million gallons per day)2022
McAllen Plant #3 - NorthMcallen8 MGD (million gallons per day)2022
Greenwood WWTPCorpus Christi8 MGD (million gallons per day)2022
New BroadwayCorpus Christi8 MGD (million gallons per day)2022
Burton Creek WWTPBryan8 MGD (million gallons per day)2022
Waxahachie WWTPWaxahachie8 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.