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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
HONOKAA WWTFHonokaa0.056 MGD (million gallons per day)2022
VERSAILLES STPVersailles0.056 MGD (million gallons per day)2022
Big Rock, Village ofBig Rock0.056 MGD (million gallons per day)2022
LOSTANT STPLostant0.056 MGD (million gallons per day)2022
BATAVIA WWTPBatavia0.056 MGD (million gallons per day)2022
FERTILE WWTPFertile0.056 MGD (million gallons per day)2022
HOLY CROSS WWTPHoly Cross0.056 MGD (million gallons per day)2022
LITTLE ROCK WWTPLittle Rock0.056 MGD (million gallons per day)2022
QUENEMO WWTPQuenemo0.056 MGD (million gallons per day)2022
ROTHSAY WWTPRothsay0.056 MGD (million gallons per day)2022
Portage Des Sioux WWTPPortage Des Sioux0.056 MGD (million gallons per day)2022
Osborn WWTPOsborn0.056 MGD (million gallons per day)2022
Raymondville WWTPRaymondville0.056 MGD (million gallons per day)2022
Norwood WWTPNorwood0.056 MGD (million gallons per day)2022
Woodbury (V) Valley Forge SD#1 WWTPHighland Mills0.056 MGD (million gallons per day)2022
BOKOSHE PWA WWTBokoshe0.056 MGD (million gallons per day)2022
RINGWOOD WWTRingwood0.056 MGD (million gallons per day)2022
MOSIER STPMosier0.056 MGD (million gallons per day)2022
Lake Poinsett Sanitary DistrictLake Norden0.056 MGD (million gallons per day)2022
Alamo RanchettesFort Stockton0.056 MGD (million gallons per day)2022
STEVENS PASS SEWER DISTRILeavenworth0.056 MGD (million gallons per day)2022
ARPIN WWTPArpin0.056 MGD (million gallons per day)2022
Fountain Hill WWTPFountain Hill0.055 MGD (million gallons per day)2022
Poyen WWTPPoyen0.055 MGD (million gallons per day)2022
Colt WWTPColt0.055 MGD (million gallons per day)2022
E HADDAM, TOWN OFEast Haddam0.055 MGD (million gallons per day)2022
Prairie Utilities KokomoSharpsville0.055 MGD (million gallons per day)2022
CENTER POINTCenterpoint0.055 MGD (million gallons per day)2022
MOORELAND WWTPMooreland0.055 MGD (million gallons per day)2022
BONAPARTE WWTPBonaparte0.055 MGD (million gallons per day)2022
KISMET WWTPKismet0.055 MGD (million gallons per day)2022
WILLIAMSBURG WWTPWilliamsburg0.055 MGD (million gallons per day)2022
KENSINGTON WWTPKensington0.055 MGD (million gallons per day)2022
ATLANTA WWTPAtlanta0.055 MGD (million gallons per day)2022
Vanceburg-Meadowbrook SubdivisionVanceburg0.055 MGD (million gallons per day)2022
CYRUS WWTPCyrus0.055 MGD (million gallons per day)2022
BADGER WWTFBadger0.055 MGD (million gallons per day)2022
BROWNSVILLE WWTPBrownsville0.055 MGD (million gallons per day)2022
AKELEY WWTPAkeley0.055 MGD (million gallons per day)2022
LAKE LILLIAN WWTPLake Lillian0.055 MGD (million gallons per day)2022
Ottertail WWTFBattle Lake0.055 MGD (million gallons per day)2022
Laclede WWTPLaclede0.055 MGD (million gallons per day)2022
Arcadia WWTP - WestArcadia0.055 MGD (million gallons per day)2022
Chamois WWTPChamois0.055 MGD (million gallons per day)2022
Alexander V WWTPAlexander0.055 MGD (million gallons per day)2022
Marlborough (T) Milton STPMilton0.055 MGD (million gallons per day)2022
Chateaugay (V) WWTPChateaugay0.055 MGD (million gallons per day)2022
Port Leyden (V) WWTP & Collection SystemPort Leyden0.055 MGD (million gallons per day)2022
Alexander (V) WWTPAlexander0.055 MGD (million gallons per day)2022
Fort Jennings WWTP & Sewer SystemFort Jennings0.055 MGD (million gallons per day)2022
Trumbull Co Mecca # 1 WWTPCortland0.055 MGD (million gallons per day)2022
Wharton WWTP and SewersWharton0.055 MGD (million gallons per day)2022
GORE WWTGore0.055 MGD (million gallons per day)2022
JENNINGS WWTJennings0.055 MGD (million gallons per day)2022
Goree WWTPGoree0.055 MGD (million gallons per day)2022
Chelsea WWTFChelsea0.055 MGD (million gallons per day)2022
PATCH GROVE STPPatch Grove0.055 MGD (million gallons per day)2022
PACKWAUKEE SD #1 STPPackwaukee0.055 MGD (million gallons per day)2022
FIFIELD SD #1 - STPFifield0.055 MGD (million gallons per day)2022
WALSH WWTPWalsh0.054 MGD (million gallons per day)2022
LEAF RIVER WWTPLeaf River0.054 MGD (million gallons per day)2022
MALLARD LAGOONMallard0.054 MGD (million gallons per day)2022
SALIX WWTPSalix0.054 MGD (million gallons per day)2022
ALTA VISTA WWTPAlta Vista0.054 MGD (million gallons per day)2022
NATOMA WWTPNatoma0.054 MGD (million gallons per day)2022
LUCAS WWTPLucas0.054 MGD (million gallons per day)2022
SYLVAN GROVE WWTPSylvan Grove0.054 MGD (million gallons per day)2022
DELAVAN WWTPDelavan0.054 MGD (million gallons per day)2022
Ravenwood WWTPRavenwood0.054 MGD (million gallons per day)2022
GRACEMONT WWTGracemont0.054 MGD (million gallons per day)2022
MAUPIN STPMaupin0.054 MGD (million gallons per day)2022
Normanna / TuletaTuleta0.054 MGD (million gallons per day)2022
Sheldon Springs WWTFSheldon Springs0.054 MGD (million gallons per day)2022
BOSTON HARBOR WWTFOlympia0.054 MGD (million gallons per day)2022
MELROSE WWTPMelrose0.054 MGD (million gallons per day)2022
Gibbsville SD - STPSheboygan Falls0.054 MGD (million gallons per day)2022
ROCKVALE, TOWN OFRockvale0.053 MGD (million gallons per day)2022
ENGLISH WWTPEnglish0.053 MGD (million gallons per day)2022
ARCADIA STLArcadia0.053 MGD (million gallons per day)2022
FARNHAMVILLE STLFarnhamville0.053 MGD (million gallons per day)2022
BALDWIN WWTPBaldwin0.053 MGD (million gallons per day)2022
MILES WWTPMiles0.053 MGD (million gallons per day)2022
SEVERY WWTPSevery0.053 MGD (million gallons per day)2022
Deep Creek Lake State ParkSwanton0.053 MGD (million gallons per day)2022
Pemberton WWTPPemberton0.053 MGD (million gallons per day)2022
Shelter Island Heights WWTPShelter Island Heights0.053 MGD (million gallons per day)2022
Newcomb (T) Winebrook STPNewcomb0.053 MGD (million gallons per day)2022
Rensselaer Falls (V) STPRensselaer Falls0.053 MGD (million gallons per day)2022
MARSHALL WWTMarshall0.053 MGD (million gallons per day)2022
Fisherman Bay STPLopez Island0.053 MGD (million gallons per day)2022
NORTH LAKE POYGAN SD STPFremont0.053 MGD (million gallons per day)2022
Grand Mesa Metropolitan District #2Mesa0.052 MGD (million gallons per day)2022
COURTLAND WWTPCourtland0.052 MGD (million gallons per day)2022
EDNA WWTPEdna0.052 MGD (million gallons per day)2022
GEORGETOWN STPGeorgetown0.052 MGD (million gallons per day)2022
Newark STPNewark0.052 MGD (million gallons per day)2022
Wayland High School Sewerage Collection System and WWTFWayland0.052 MGD (million gallons per day)2022
NEW GERMANY WWTFNew Germany0.052 MGD (million gallons per day)2022
CROMWELL WWTPCromwell0.052 MGD (million gallons per day)2022
CRANE LAKE WWTPCrane Lake0.052 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.