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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
Dayton WWTP & Sewer SystemDayton72 MGD (million gallons per day)2022
East Central Regional WWTPWest Palm Beach70 MGD (million gallons per day)2022
NCSD #2 - South Shore WRF (Formerly Bay Park STP)East Rockaway70 MGD (million gallons per day)2022
Fresno-Clovis Regional WRFFresno68 MGD (million gallons per day)2022
Springfield Sewerage Collection System and WPCFSpringfield67.1 MGD (million gallons per day)2022
LOWER POTOMAC STPLorton67 MGD (million gallons per day)2022
Springfield SW WWTPSpringfield64 MGD (million gallons per day)2022
MCALPINE CREEK WWTPPineville64 MGD (million gallons per day)2022
Upper Blackstone Clean WaterMillbury63 MGD (million gallons per day)2022
GRAND RAPIDS WWTPGrand Rapids61.1 MGD (million gallons per day)2022
Jefferson County-Village Creek WWTPBirmingham60 MGD (million gallons per day)2022
Phoenix 23rd Ave WWTPPhoenix60 MGD (million gallons per day)2022
HARTFORD WPCFHartford60 MGD (million gallons per day)2022
Cobb County Sutton WPCPSmyrna60 MGD (million gallons per day)2022
GARY SANITARY DISTRICTGary60 MGD (million gallons per day)2022
New York (C) - Red Hook WPCPBrooklyn60 MGD (million gallons per day)2022
New York (C) - Port Richmond WPCPStaten Island60 MGD (million gallons per day)2022
NEUSE RIVER RESOURCE RECOVERY FACILITYRaleigh60 MGD (million gallons per day)2022
METRO WWTPColumbia60 MGD (million gallons per day)2022
Southwest - HoustonHouston60 MGD (million gallons per day)2022
TACOMA CENTRAL STP #1Tacoma60 MGD (million gallons per day)2022
FORT WAYNE WPCPFort Wayne58.1 MGD (million gallons per day)2022
Point Woronzof, John Asplund WWTPAnchorage58 MGD (million gallons per day)2022
PCRWRD Greater Tucson CollectionTucson57.4 MGD (million gallons per day)2022
OCUD/South WRFOrlando56 MGD (million gallons per day)2022
CEDAR RAPIDS WWTPCedar Rapids56 MGD (million gallons per day)2022
LOHMEYER REG. WWTPFort Lauderdale55.7 MGD (million gallons per day)2022
Stockton Regional WWCFStockton55 MGD (million gallons per day)2022
Greater Lawrence Sanitary DistrictNorth Andover55 MGD (million gallons per day)2022
Oneida (Co) Oneida Co.WPCPUtica54 MGD (million gallons per day)2022
ATLANTIC W P C FVirginia Beach54 MGD (million gallons per day)2022
ALEXANDRIA STPAlexandria54 MGD (million gallons per day)2022
WATER RECLAMATION PROJECTCentreville54 MGD (million gallons per day)2022
Central Contra Costa WWTFMartinez53.8 MGD (million gallons per day)2022
MADISON MSD STPMadison53.6 MGD (million gallons per day)2022
KALAMAZOO WWTPKalamazoo53.5 MGD (million gallons per day)2022
BUCKMAN STREET WWTFJacksonville52.5 MGD (million gallons per day)2022
MWRDGC, JAMES C. KIRIE WRPChicago52 MGD (million gallons per day)2022
LBVSD, Atherton PlantIndependence52 MGD (million gallons per day)2022
San Antonio Creek WWFOakland51 MGD (million gallons per day)2022
Spokane Riverside Park POTWSpokane51 MGD (million gallons per day)2022
MISSOURI RIVER STPOmaha50.7 MGD (million gallons per day)2022
PCRWRD Tres Rios Water Reclamation FacilityTucson50 MGD (million gallons per day)2022
South Platte Renew LITTLETON/ENGLEWOOD WWTPEnglewood50 MGD (million gallons per day)2022
Gwinnett F. Wayne Hill WRCNorcross50 MGD (million gallons per day)2022
FLINT WPCFFlint50 MGD (million gallons per day)2022
PAPILLION WWTPBellevue50 MGD (million gallons per day)2022
ALBUQUERQUE #1 PLANT AND COLL. SYSTEMAlbuquerque50 MGD (million gallons per day)2022
SOUTH VALLEY WRFWest Jordan50 MGD (million gallons per day)2022
HOPEWELL REGIONAL WWTPHopewell50 MGD (million gallons per day)2022
Leon Creek Water Recycling WWTPSan Antonio49.72 MGD (million gallons per day)2022
Green Bay MSD (NEW Water) - Green BayGreen Bay49.2 MGD (million gallons per day)2022
MWMC - EUGENE/SPRINGFIELD STPEugene49 MGD (million gallons per day)2022
HOLLYWOOD WPCPHollywood48.75 MGD (million gallons per day)2022
WLSSD REGIONAL WWTFDuluth48.4 MGD (million gallons per day)2022
Hamilton WRF & Sewer SystemHamilton48.208 MGD (million gallons per day)2022
South River WRCAtlanta48 MGD (million gallons per day)2022
SOUTH BEND WWTPSouth Bend48 MGD (million gallons per day)2022
Amherst (T) WWTP #16 & SewersTonawanda48 MGD (million gallons per day)2022
Niagara Falls (C) WWTP and San SewersNiagara Falls48 MGD (million gallons per day)2022
Wilson Creek WWTPMckinney48 MGD (million gallons per day)2022
Sims Bayou WWTPHouston48 MGD (million gallons per day)2022
SALT LAKE CITYSalt Lake City48 MGD (million gallons per day)2022
CENTRAL WEBER SIDOgden47 MGD (million gallons per day)2022
N KY SD1 - DRY CREEK STPErlanger46.5 MGD (million gallons per day)2022
Reno City of - TMWRFReno46.5 MGD (million gallons per day)2022
Augusta J.B. Messerly WPCPAugusta46.1 MGD (million gallons per day)2022
Riverside, City of (Regional Water Quality Control Plant)Riverside46 MGD (million gallons per day)2022
JACKSON POTW, SAVANNA STREETJackson46 MGD (million gallons per day)2022
Salado Creek WWTPSan Antonio46 MGD (million gallons per day)2022
YCUA WWTPYpsilanti45.9 MGD (million gallons per day)2022
FIELDS POINT WWTFProvidence45.5 MGD (million gallons per day)2022
WICHITA WWTP #1 + #2Wichita45 MGD (million gallons per day)2022
New York (C) - Rockaway WPCPNew York45 MGD (million gallons per day)2022
Waco Regional WWTPWaco45 MGD (million gallons per day)2022
IEUA Regional Plant No.1Ontario44 MGD (million gallons per day)2022
Dekalb County Snapfinger WWTPDecatur44 MGD (million gallons per day)2022
Truckee Meadows Water Reclamation Facility Treatment PlantReno44 MGD (million gallons per day)2022
DELCORA CHESTER STPChester44 MGD (million gallons per day)2022
KUWAHEE WWTPKnoxville44 MGD (million gallons per day)2022
Oceanside WPCPSan Francisco43 MGD (million gallons per day)2022
MUSKEGON CO METRO STPMuskegon43 MGD (million gallons per day)2022
Saratoga (Co) SD#1 WPCPMechanicville43 MGD (million gallons per day)2022
TULSA SOUTHSIDE WWTTulsa42.5 MGD (million gallons per day)2022
Roberto Bustamante WWTPEl Paso42.33 MGD (million gallons per day)2022
South Columbus WRPColumbus42 MGD (million gallons per day)2022
FOX METRO WATER RECLAMATION DISTRICTOswego42 MGD (million gallons per day)2022
BLUE LAKE WWTPShakopee42 MGD (million gallons per day)2022
Western Virginia Water Auth. WWTPWirtz42 MGD (million gallons per day)2022
Huntsville Spring Branch WWTPHuntsville41 MGD (million gallons per day)2022
Decatur Sanitary DistrictDecatur41 MGD (million gallons per day)2022
Brightwater Treatment PlantWoodinville40.9 MGD (million gallons per day)2022
Encina Water Pollution Control FacilityCarlsbad40.51 MGD (million gallons per day)2022
TULSA NORTHSIDE WWTTulsa40.1 MGD (million gallons per day)2022
Regional Tertiary Treatment Rapid Infiltration and Extraction FacilityColton40 MGD (million gallons per day)2022
NEW HAVEN EAST SHORE WPCFNew Haven40 MGD (million gallons per day)2022
Iron Bridge Regional WRFOviedo40 MGD (million gallons per day)2022
Dalton (Riverbend LAS)Dalton40 MGD (million gallons per day)2022
Utoy Creek WRPAtlanta40 MGD (million gallons per day)2022
Cobb County South WPCPAustell40 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.