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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
Long Branch City SA - CS/STPLong Branch5.4 MGD (million gallons per day)2022
Lorain Philip Q Maiorana WWTPLorain5.4 MGD (million gallons per day)2022
Sulphur Springs WWTPSulphur Springs5.4 MGD (million gallons per day)2022
Charles River Water Pollution Control FacilityMedway5.35 MGD (million gallons per day)2022
Oswego (C) East Side STPOswego5.35 MGD (million gallons per day)2022
Wentzville Water ReclamationWentzville5.34 MGD (million gallons per day)2022
KEALAKEHE WWTPKailua Kona5.3 MGD (million gallons per day)2022
MATTOON STPMattoon5.3 MGD (million gallons per day)2022
ADDISON WWTP-NORTHAddison5.3 MGD (million gallons per day)2022
PORTAGE WWTPPortage5.3 MGD (million gallons per day)2022
Branson, Compton Dr. WWTPBranson5.3 MGD (million gallons per day)2022
North Hempstead (T) Great Neck WPCPGreat Neck5.3 MGD (million gallons per day)2022
CAROLINA SHORES WWTPCalabash5.3 MGD (million gallons per day)2022
Burlington Main WWTFBurlington5.3 MGD (million gallons per day)2022
FRONT ROYAL STPFront Royal5.3 MGD (million gallons per day)2022
TAHLEQUAH STPTahlequah5.27 MGD (million gallons per day)2022
GLENDALE HEIGHTS STWGlendale Heights5.26 MGD (million gallons per day)2022
San Elijo WRFCardiff By The Sea5.25 MGD (million gallons per day)2022
MURRAY STPMurray5.25 MGD (million gallons per day)2022
Saline Creek Regional WWTFFenton5.25 MGD (million gallons per day)2022
Portage Co Streetsboro-Hudson Regional WWTPStreetsboro5.236 MGD (million gallons per day)2022
Palm Bay Utilities WWTFPalm Bay5.2 MGD (million gallons per day)2022
WAIANAE WWTPWaianae5.2 MGD (million gallons per day)2022
CROWN POINT WWTPCrown Point5.2 MGD (million gallons per day)2022
PERRY WWTPPerry5.2 MGD (million gallons per day)2022
NORTHFIELD WWTPNorthfield5.2 MGD (million gallons per day)2022
Willingboro Township MUA - CS/STPWillingboro5.2 MGD (million gallons per day)2022
DURBIN REGIONAL PLANTFountain Inn5.2 MGD (million gallons per day)2022
WATERTOWN STPWatertown5.2 MGD (million gallons per day)2022
BREWER WASTEWATER TREATMENTBrewer5.19 MGD (million gallons per day)2022
IOWA GREAT LAKES WWTPMilford5.17 MGD (million gallons per day)2022
Gloucester Sewerage Collection System and WPCFGloucester5.155 MGD (million gallons per day)2022
FRANKLIN STPFranklin5.13 MGD (million gallons per day)2022
Secaucus Town MUA - Koelle Blvd STP/CSSecaucus5.12 MGD (million gallons per day)2022
GILLETTE WWTPGillette5.12 MGD (million gallons per day)2022
Bennington WWTFBennington5.11 MGD (million gallons per day)2022
Kingman Hilltop WWTFKingman5.1 MGD (million gallons per day)2022
San Luis Obispo WRFSan Luis Obispo5.1 MGD (million gallons per day)2022
Mud Creek WPCPValdosta5.1 MGD (million gallons per day)2022
WOOD RIVER STPWood River5.1 MGD (million gallons per day)2022
South Hadley Sewerage Collection System and WWTFSouth Hadley5.1 MGD (million gallons per day)2022
Pharr WWTPPharr5.1 MGD (million gallons per day)2022
Jackrabbit WWTPHouston5.1 MGD (million gallons per day)2022
Stafford WWTPStafford5.1 MGD (million gallons per day)2022
Marinette Wastewater UtilityMarinette5.1 MGD (million gallons per day)2022
Mercedes WWTPMercedes5.09 MGD (million gallons per day)2022
WESTMINSTER WWTPWestminster5.07 MGD (million gallons per day)2022
SHEPHERDSVILLE WWTPShepherdsville5.034 MGD (million gallons per day)2022
Rochester WWTFRochester5.03 MGD (million gallons per day)2022
SWANSEA STPSwansea5.015 MGD (million gallons per day)2022
Cherokee County (Fitzgerald Creek WPCP)Woodstock5.001 MGD (million gallons per day)2022
FORT PAYNE WWTPFort Payne5 MGD (million gallons per day)2022
NORTHPORT WWTPNorthport5 MGD (million gallons per day)2022
Opelika-Eastside WWTPOpelika5 MGD (million gallons per day)2022
TROY WALNUT CREEK WWTPTroy5 MGD (million gallons per day)2022
Jefferson County-Turkey Creek WWTPPinson5 MGD (million gallons per day)2022
SCOTTSBORO SOUTHSIDE WWTPScottsboro5 MGD (million gallons per day)2022
El Dorado - North WWTPEl Dorado5 MGD (million gallons per day)2022
Searcy WWTPSearcy5 MGD (million gallons per day)2022
Mountain Home WWTPMountain Home5 MGD (million gallons per day)2022
Coachella Valley Water District (Water Reclamation Plant No. 7)Indio5 MGD (million gallons per day)2022
Santa Rosa WRFMurrieta5 MGD (million gallons per day)2022
SO SAN LUIS OB CO WWTFOceano5 MGD (million gallons per day)2022
HANFORD WWTFHanford5 MGD (million gallons per day)2022
TULARE WWTFTulare5 MGD (million gallons per day)2022
Brentwood WWTPBrentwood5 MGD (million gallons per day)2022
SONORA WWTPSonora5 MGD (million gallons per day)2022
LINDA WWTFMarysville5 MGD (million gallons per day)2022
Meadowlark Water Reclam. FacilitySan Marcos5 MGD (million gallons per day)2022
SAND CREEK WWTPAurora5 MGD (million gallons per day)2022
STEAMBOAT SPRINGS WWTPSteamboat Springs5 MGD (million gallons per day)2022
WINDSOR POQUONOCK STPWindsor5 MGD (million gallons per day)2022
Homestead WWTPHomestead5 MGD (million gallons per day)2022
Clearwater East WRFClearwater5 MGD (million gallons per day)2022
ST ANDREWS WWTFPanama City5 MGD (million gallons per day)2022
East Port WWTPPort Charlotte5 MGD (million gallons per day)2022
Clay County Miller Street WWTPOrange Park5 MGD (million gallons per day)2022
Fiesta Village WWTPFort Myers5 MGD (million gallons per day)2022
Martin County Tropical Farms WWTFStuart5 MGD (million gallons per day)2022
CAMELOT STPKissimmee5 MGD (million gallons per day)2022
Fowler WRFCumming5 MGD (million gallons per day)2022
Lafayette WPCPLa Fayette5 MGD (million gallons per day)2022
Fayetteville WWTPFayetteville5 MGD (million gallons per day)2022
Trion WPCPTrion5 MGD (million gallons per day)2022
Gum Creek WPCPCordele5 MGD (million gallons per day)2022
Gainesville Linwood WPCPGainesville5 MGD (million gallons per day)2022
HILO WWTFHilo5 MGD (million gallons per day)2022
SANDPOINT S/T PLANTSandpoint5 MGD (million gallons per day)2022
BURLEY SEWAGE TREATMENT PLANTBurley5 MGD (million gallons per day)2022
RUPERT STPRupert5 MGD (million gallons per day)2022
BLACKFOOT S/T FACILITY,Blackfoot5 MGD (million gallons per day)2022
MT VERNON WWTP & Collection SystemMount Vernon5 MGD (million gallons per day)2022
LOCKPORT, Division St . WWTPLockport5 MGD (million gallons per day)2022
GENEVA STPGeneva5 MGD (million gallons per day)2022
FRWRD West STPElgin5 MGD (million gallons per day)2022
ALGONQUIN WWTFAlgonquin5 MGD (million gallons per day)2022
LEBANON WWTPLebanon5 MGD (million gallons per day)2022
NOBLESVILLE WWTPNoblesville5 MGD (million gallons per day)2022
Clarksville WWTPClarksville5 MGD (million gallons per day)2022
GOSHEN WWTPGoshen5 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.