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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
GADSDEN WEST WWTPGadsden11.32 MGD (million gallons per day)2022
Pittsfield Sewerage Collection System and WPCFPittsfield11.3 MGD (million gallons per day)2022
LUFKIN WWTPLufkin11.3 MGD (million gallons per day)2022
Main WWTP #1Galveston11.3 MGD (million gallons per day)2022
MANKATO WWTPMankato11.25 MGD (million gallons per day)2022
O'Fallon STPO Fallon11.25 MGD (million gallons per day)2022
North Ridgeville French Creek WWTPNorth Ridgeville11.25 MGD (million gallons per day)2022
Tri-Cities North Regional WWTPDayton11.2 MGD (million gallons per day)2022
EAST MOLINE REGIONAL STPEast Moline11.1 MGD (million gallons per day)2022
Gilbert Neely WWTFGilbert11 MGD (million gallons per day)2022
El Estero Wastewater Treatment FacilitySanta Barbara11 MGD (million gallons per day)2022
Burbank WRPBurbank11 MGD (million gallons per day)2022
FT. MYERS CENTRAL AWTPFort Myers11 MGD (million gallons per day)2022
Manatee County SE Regional WWTPBradenton11 MGD (million gallons per day)2022
Perry WPCFPerry11 MGD (million gallons per day)2022
GALESBURG SANITARY DISTRICTGalesburg11 MGD (million gallons per day)2022
DOWNERS GROVE SD & COLL SYSTDowners Grove11 MGD (million gallons per day)2022
MANHATTAN WWTPManhattan11 MGD (million gallons per day)2022
ASHLANDAshland11 MGD (million gallons per day)2022
Cape Girardeau WWTPCape Girardeau11 MGD (million gallons per day)2022
Jefferson City WWTPJefferson City11 MGD (million gallons per day)2022
Zanesville WWTP & Sewer SystemZanesville11 MGD (million gallons per day)2022
PALM SPRINGS WWRFPalm Springs10.9 MGD (million gallons per day)2022
Milledgeville WPCPMilledgeville10.9 MGD (million gallons per day)2022
BURLINGTON WWTPBurlington10.85 MGD (million gallons per day)2022
Tracy WWTPTracy10.8 MGD (million gallons per day)2022
Middletown Township SA - CS/STPBelford10.8 MGD (million gallons per day)2022
ALTOONA WESTERLY STPAltoona10.8 MGD (million gallons per day)2022
Fourth Creek WWTPKnoxville10.8 MGD (million gallons per day)2022
BRISTOL STPBristol10.75 MGD (million gallons per day)2022
NMDGF/Red River State Fish HatcheryQuesta10.717 MGD (million gallons per day)2022
NEWPORT WWTFNewport10.7 MGD (million gallons per day)2022
CALDWELL SEWAGE TRT FACILCaldwell10.64 MGD (million gallons per day)2022
Yuba City WRPYuba City10.5 MGD (million gallons per day)2022
JO CO BL RIV MSD #1 WWTPOverland Park10.5 MGD (million gallons per day)2022
HAGERSTOWN WPCFHagerstown10.5 MGD (million gallons per day)2022
MORGANTON WWTPMorganton10.5 MGD (million gallons per day)2022
Marion WWTP & Sewer SystemMarion10.5 MGD (million gallons per day)2022
CHEYENNE DRY CREEK WWTPCheyenne10.5 MGD (million gallons per day)2022
WOODLAND WWTFWoodland10.4 MGD (million gallons per day)2022
COLTON WWTFColton10.4 MGD (million gallons per day)2022
FRANKFORT STP & CSFrankfort10.4 MGD (million gallons per day)2022
McAllen WWTP #2Mcallen10.4 MGD (million gallons per day)2022
North San Mateo County Sanitation District WWTPDaly City10.3 MGD (million gallons per day)2022
NAUGATUCK WPCFNaugatuck10.3 MGD (million gallons per day)2022
MUSCATINE WWTPMuscatine10.3 MGD (million gallons per day)2022
LOVES CREEK STPKnoxville10.3 MGD (million gallons per day)2022
WEST BAY CO REGIONAL WWTPBay City10.28 MGD (million gallons per day)2022
City of Sarasota AWWTFSarasota10.2 MGD (million gallons per day)2022
MARGATE WEST STPPompano Beach10.1 MGD (million gallons per day)2022
Miramar WWTFMiramar Beach10.1 MGD (million gallons per day)2022
BOISE, CITY OF- LANDER STREETBoise10.1 MGD (million gallons per day)2022
Concord Hall Street WWTFConcord10.1 MGD (million gallons per day)2022
Bremerton West Plant STPBremerton10.1 MGD (million gallons per day)2022
BUTLER AREA STPButler10.03 MGD (million gallons per day)2022
Orange Beach WWTPOrange Beach10 MGD (million gallons per day)2022
CHANDLER LONE BUTTE WWTFChandler10 MGD (million gallons per day)2022
Peoria Butler WRFPeoria10 MGD (million gallons per day)2022
Fort Smith - Massard Creek WWTPBarling10 MGD (million gallons per day)2022
Fayetteville - Westside WWTPFayetteville10 MGD (million gallons per day)2022
Central Marin San. Agency WWTFSan Rafael10 MGD (million gallons per day)2022
LOVELAND WWTPLoveland10 MGD (million gallons per day)2022
ENFIELD WWTFEnfield10 MGD (million gallons per day)2022
NEW LONDON WPCFNew London10 MGD (million gallons per day)2022
Arbennie Pritchett Water Reclamation FacilitFort Walton Beach10 MGD (million gallons per day)2022
District II WRFJacksonville10 MGD (million gallons per day)2022
Sunrise STP No. 1 (Springtree)Fort Lauderdale10 MGD (million gallons per day)2022
Plant City WRFPlant City10 MGD (million gallons per day)2022
South County Regional WWTPRuskin10 MGD (million gallons per day)2022
Marshall Street WRFClearwater10 MGD (million gallons per day)2022
Naples WWTPNaples10 MGD (million gallons per day)2022
KEY WEST WWTPKey West10 MGD (million gallons per day)2022
Panama City Beach WWTP #1Panama City Beach10 MGD (million gallons per day)2022
Athens Middle Oconee WRPAthens10 MGD (million gallons per day)2022
Statesboro WPCPStatesboro10 MGD (million gallons per day)2022
DUPAGE CO DPW, KNOLLWOOD STPBurr Ridge10 MGD (million gallons per day)2022
MUNCIE SD WWTPMuncie10 MGD (million gallons per day)2022
OTTUMWA WWTPOttumwa10 MGD (million gallons per day)2022
MIDLAND WWTPMidland10 MGD (million gallons per day)2022
HCUA, EAST BILOXI POTWBiloxi10 MGD (million gallons per day)2022
STARKVILLE POTWStarkville10 MGD (million gallons per day)2022
VICKSBURG POTWVicksburg10 MGD (million gallons per day)2022
Rock Creek WWTPIndependence10 MGD (million gallons per day)2022
Blue Springs Sni-A-BarGrain Valley10 MGD (million gallons per day)2022
North Hudson SA (River Rd WWTP) - CS/CSO/STPHoboken10 MGD (million gallons per day)2022
Poughkeepsie (C) WWTPPoughkeepsie10 MGD (million gallons per day)2022
Westchester (Co) Peekskill SD STPPeekskill10 MGD (million gallons per day)2022
Amsterdam (C) WWTPAmsterdam10 MGD (million gallons per day)2022
Gloversville-Johnstown (C) WWTPJohnstown10 MGD (million gallons per day)2022
Endicott (V) STP and SewersEndicott10 MGD (million gallons per day)2022
Onondaga (Co) Oak Orchard WWTPClay10 MGD (million gallons per day)2022
Delaware Co Alum Creek WWTPLewis Center10 MGD (million gallons per day)2022
Delaware WWTP & Sewer SystemDelaware10 MGD (million gallons per day)2022
Fairfield WWTP & Sewer SystemFairfield10 MGD (million gallons per day)2022
Lancaster Lawrence St WWTPLancaster10 MGD (million gallons per day)2022
Bowling Green WWTP & Sewer SystemBowling Green10 MGD (million gallons per day)2022
STILLWATER WWTStillwater10 MGD (million gallons per day)2022
KELLOGG CREEK STPClackamas10 MGD (million gallons per day)2022
EASTON AREA STPEaston10 MGD (million gallons per day)2022
COLUMBIA WWTPColumbia10 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.