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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
Mack SDMack0.015 MGD (million gallons per day)2022
VONA WWTPVona0.015 MGD (million gallons per day)2022
PRITCHETT LAGOONPritchett0.015 MGD (million gallons per day)2022
VC/Pine Island WWTFSeville0.015 MGD (million gallons per day)2022
Point Buena Vista WWTFEast Palatka0.015 MGD (million gallons per day)2022
Doerun WPCPDoerun0.015 MGD (million gallons per day)2022
JOINT SCHOOL DIST 171-TIMBERLINE HS LSASWeippe0.015 MGD (million gallons per day)2022
MASONVILLE LAGOONSMasonville0.015 MGD (million gallons per day)2022
HILLSBORO STLHillsboro0.015 MGD (million gallons per day)2022
MELROSE WWTPMelrose0.015 MGD (million gallons per day)2022
CAMBRIDGE WWTPCambridge0.015 MGD (million gallons per day)2022
MAYFIELD WWTPMayfield0.015 MGD (million gallons per day)2022
NETAWAKA WWTPNetawaka0.015 MGD (million gallons per day)2022
WB CO SD #1 WWTP (FLINTVIEW SUBD)Alma0.015 MGD (million gallons per day)2022
AGENDA WWTPAgenda0.015 MGD (million gallons per day)2022
GREEN WWTPGreen0.015 MGD (million gallons per day)2022
BUNKER HILL WWTPBunker Hill0.015 MGD (million gallons per day)2022
ESBON WWTPEsbon0.015 MGD (million gallons per day)2022
OLMITZ WWTPOlmitz0.015 MGD (million gallons per day)2022
HAVANA WWTPHavana0.015 MGD (million gallons per day)2022
BAYVILLE WWTFBoothbay Harbor0.015 MGD (million gallons per day)2022
South Carroll High School WWTPSykesville0.015 MGD (million gallons per day)2022
Monroe Sewerage Collection System and WWTFMonroe Bridge0.015 MGD (million gallons per day)2022
Shorewood Park SDRush City0.015 MGD (million gallons per day)2022
NIELSVILLE WWTPNielsville0.015 MGD (million gallons per day)2022
DUMONT WWTPDumont0.015 MGD (million gallons per day)2022
DUNDEE WWTFFulda0.015 MGD (million gallons per day)2022
LA SALLE WWTFLa Salle0.015 MGD (million gallons per day)2022
PCPWSD No. 2 Country Club Terrace WWTPRolla0.015 MGD (million gallons per day)2022
SCCPWSD #2 Dakota Boys Ranch WWTPDutzow0.015 MGD (million gallons per day)2022
Clifton Hill WWTFClifton Hill0.015 MGD (million gallons per day)2022
Village of PendletonJonesburg0.015 MGD (million gallons per day)2022
Livonia WWTFLivonia0.015 MGD (million gallons per day)2022
Monroe Co, PWSD#2, Rush Hill WWTPRush Hill0.015 MGD (million gallons per day)2022
Morrison WWTPMorrison0.015 MGD (million gallons per day)2022
Power - Teton County W&S DistrictPower0.015 MGD (million gallons per day)2022
Yellowstone Boys & Girls Ranch County W&S DistrictBillings0.015 MGD (million gallons per day)2022
SACO WWTPSaco0.015 MGD (million gallons per day)2022
LAMBERT WWTPLambert0.015 MGD (million gallons per day)2022
ANTELOPEAntelope0.015 MGD (million gallons per day)2022
STELLA WWTPStella0.015 MGD (million gallons per day)2022
MCGREW WWTPMcgrew0.015 MGD (million gallons per day)2022
THURSTON WWTPThurston0.015 MGD (million gallons per day)2022
Montgomery Township - Skillman Village STPSkillman0.015 MGD (million gallons per day)2022
Chemung (T) WWTPChemung0.015 MGD (million gallons per day)2022
New Paltz (T) SD #6 STPNew Paltz0.015 MGD (million gallons per day)2022
Westport (T) Wadhams SD STPWestport0.015 MGD (million gallons per day)2022
Gates County WWTPGates0.015 MGD (million gallons per day)2022
Holmes Co Winesburg WWTP & SewersWinesburg0.015 MGD (million gallons per day)2022
Defiance Co Evergreen Office Complex WWTPDefiance0.015 MGD (million gallons per day)2022
Defiance Co Belden's Subdivision WWTP & SewersDefiance0.015 MGD (million gallons per day)2022
Auglaize Pines Subdivision WWTPDefiance0.015 MGD (million gallons per day)2022
Gates Mills Downtown WWTP & Sewer SystemGates Mills0.015 MGD (million gallons per day)2022
Geauga Co Wintergreen WWTPChardon0.015 MGD (million gallons per day)2022
Perry Co Moore's Junction AreaNew Lexington0.015 MGD (million gallons per day)2022
Preble Co Sewer District #2 WWTPEaton0.015 MGD (million gallons per day)2022
Warren Co Dale Acres WWTPGoshen0.015 MGD (million gallons per day)2022
DEWEY CO. #2 (CAMARGO) WWTCamargo0.015 MGD (million gallons per day)2022
FAIRMONT WWTFairmont0.015 MGD (million gallons per day)2022
WILLOW WWTWillow0.015 MGD (million gallons per day)2022
GARVIN WWTGarvin0.015 MGD (million gallons per day)2022
Green Sea FloydsGreen Sea0.015 MGD (million gallons per day)2022
Powder House PassLead0.015 MGD (million gallons per day)2022
Morgan County - Coalfield SchoolCoalfield0.015 MGD (million gallons per day)2022
TUSCULUM SEWAGE SYSTEMGreeneville0.015 MGD (million gallons per day)2022
Huxley WWTPShelbyville0.015 MGD (million gallons per day)2022
GLADSTONE STPGladstone0.015 MGD (million gallons per day)2022
EASTSOUND ORCAS VILLAGE WWTPOrcas0.015 MGD (million gallons per day)2022
BERK CO PSSD - MARLOWE GARDENS TPFalling Waters0.015 MGD (million gallons per day)2022
MINGO CO PSD - SHADEE WOODS WWTPNaugatuck0.015 MGD (million gallons per day)2022
LIME RIDGE STPLime Ridge0.015 MGD (million gallons per day)2022
JAMESTOWN SD #2 STPKieler0.015 MGD (million gallons per day)2022
BOAZ STPMuscoda0.015 MGD (million gallons per day)2022
FENWOOD STPStratford0.015 MGD (million gallons per day)2022
OSAGE LAGOONOsage0.015 MGD (million gallons per day)2022
RIVERSIDE LAGOONEncampment0.015 MGD (million gallons per day)2022
Tinsman WWTPHampton0.014 MGD (million gallons per day)2022
Campo, Town of, WWTPCampo0.014 MGD (million gallons per day)2022
Helmer Sewage Treatment SystemDeary0.014 MGD (million gallons per day)2022
MARTINSBURG-RUSSMartinsburg0.014 MGD (million gallons per day)2022
RICKETTS STPRicketts0.014 MGD (million gallons per day)2022
FURLEY IMP. DIST. WWTPWichita0.014 MGD (million gallons per day)2022
GEUDA SPRINGS WWTPGeuda Springs0.014 MGD (million gallons per day)2022
HAZELTON WWTPHazelton0.014 MGD (million gallons per day)2022
HEPLER WWTPHepler0.014 MGD (million gallons per day)2022
SAVONBURG WWTPSavonburg0.014 MGD (million gallons per day)2022
LEOVILLE I D WWTPOberlin0.014 MGD (million gallons per day)2022
PIONEER WWTPPioneer0.014 MGD (million gallons per day)2022
Mardela High School WWTPMardela Springs0.014 MGD (million gallons per day)2022
STEEN WWTFSteen0.014 MGD (million gallons per day)2022
IHLEN WWTFIhlen0.014 MGD (million gallons per day)2022
PCRSD# 33, South GaleSmithville0.014 MGD (million gallons per day)2022
Walnut RidgeHigh Ridge0.014 MGD (million gallons per day)2022
FCPWSD #3, Woodridge Farms Subd. WWTFVilla Ridge0.014 MGD (million gallons per day)2022
Fortuna WWTPFortuna0.014 MGD (million gallons per day)2022
BROCK WWTPBrock0.014 MGD (million gallons per day)2022
ITHACA WWTPIthaca0.014 MGD (million gallons per day)2022
MASON CITY WWTPMason City0.014 MGD (million gallons per day)2022
SPRAGUE WWTPSprague0.014 MGD (million gallons per day)2022
Elma (T) SD#1 Jerge Subdivision WWTPElma0.014 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.