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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
MORGAN CO SEWERBerkeley Springs1.246 MGD (million gallons per day)2022
Dove Springs WWTPGeorgetown1.24 MGD (million gallons per day)2022
MARSEILLES STPMarseilles1.23 MGD (million gallons per day)2022
OAK PARK CDJeffersonville1.23 MGD (million gallons per day)2022
ELIZABETHTOWN WWTPElizabethtown1.225 MGD (million gallons per day)2022
ROSELLE-BOTTERMAN STPRoselle1.22 MGD (million gallons per day)2022
MADELIA WWTPMadelia1.22 MGD (million gallons per day)2022
White River Junction WWTFWhite River Junction1.22 MGD (million gallons per day)2022
OGDEN STPOgden1.218 MGD (million gallons per day)2022
GENEVA WWTPGeneva1.215 MGD (million gallons per day)2022
MCCANDLESS TWP - LONGVUE #1 STPPittsburgh1.21 MGD (million gallons per day)2022
OAKMONT BORO STPOakmont1.21 MGD (million gallons per day)2022
Bridgeport WWTPBridge City1.208 MGD (million gallons per day)2022
Hoover Inverness WWTPBirmingham1.2 MGD (million gallons per day)2022
OPP WESTSIDE WWTPOpp1.2 MGD (million gallons per day)2022
BERRY WWTF-Lagoon & SprayfieldBerry1.2 MGD (million gallons per day)2022
Soldotna WWTSoldotna1.2 MGD (million gallons per day)2022
Benson WWTFBenson1.2 MGD (million gallons per day)2022
Bisbee - San Jose WWTFBisbee1.2 MGD (million gallons per day)2022
Globe WWTFGlobe1.2 MGD (million gallons per day)2022
Helena/West Helena - W. Helena WWTPWest Helena1.2 MGD (million gallons per day)2022
Hope - Bois D'Arc WWTPHope1.2 MGD (million gallons per day)2022
Dermott WWTPDermott1.2 MGD (million gallons per day)2022
Clinton - East WWTPClinton1.2 MGD (million gallons per day)2022
C & H SUGAR JOINT WWTPCrockett1.2 MGD (million gallons per day)2022
AVALON WWRFAvalon1.2 MGD (million gallons per day)2022
KERMAN WWTFKerman1.2 MGD (million gallons per day)2022
WILLOWS WWTFWillows1.2 MGD (million gallons per day)2022
Silver Lakes WWTFHelendale1.2 MGD (million gallons per day)2022
NEEDLES WWTFNeedles1.2 MGD (million gallons per day)2022
Mount CRESTED BUTTE WsdCrested Butte1.2 MGD (million gallons per day)2022
EVANS STPEvans1.2 MGD (million gallons per day)2022
Golden WWTPGolden1.2 MGD (million gallons per day)2022
Resource Colorado Water and SanitatDenver1.2 MGD (million gallons per day)2022
PORTLAND, TOWN OFPortland1.2 MGD (million gallons per day)2022
PAHOKEE STPPahokee1.2 MGD (million gallons per day)2022
West Port WWTPPort Charlotte1.2 MGD (million gallons per day)2022
CARRABELLE STPCarrabelle1.2 MGD (million gallons per day)2022
JASPER WWTFJasper1.2 MGD (million gallons per day)2022
WAUCHULA STPWauchula1.2 MGD (million gallons per day)2022
Chipley WWTPChipley1.2 MGD (million gallons per day)2022
Wakulla County WWTFCrawfordville1.2 MGD (million gallons per day)2022
Mineral Springs WPCPNewnan1.2 MGD (million gallons per day)2022
PRESTON S/T FACILITYPreston1.2 MGD (million gallons per day)2022
BEECHER STPBeecher1.2 MGD (million gallons per day)2022
E PEORIA SEWAGE PLT NO 3East Peoria1.2 MGD (million gallons per day)2022
PITTSBORO WWTPPittsboro1.2 MGD (million gallons per day)2022
GARRETT WWTPGarrett1.2 MGD (million gallons per day)2022
DALLAS CENTER WWTPDallas Center1.2 MGD (million gallons per day)2022
GRUNDY CENTER WWTPGrundy Center1.2 MGD (million gallons per day)2022
ANDOVER WWTPAndover1.2 MGD (million gallons per day)2022
COLUMBIA STPColumbia1.2 MGD (million gallons per day)2022
STANFORDStanford1.2 MGD (million gallons per day)2022
CENTRAL CITY STPCentral City1.2 MGD (million gallons per day)2022
HARLAN STPLoyall1.2 MGD (million gallons per day)2022
WINNSBORO STPWinnsboro1.2 MGD (million gallons per day)2022
TALLULAH/RICHMOND STPTallulah1.2 MGD (million gallons per day)2022
Mt. Airy WWTPMount Airy1.2 MGD (million gallons per day)2022
DENTON WWTPDenton1.2 MGD (million gallons per day)2022
Concord Sewerage Collection System and WWTFConcord1.2 MGD (million gallons per day)2022
Great Barrington Sewerage Collection System and WWTFGreat Barrington1.2 MGD (million gallons per day)2022
BELDING STPBelding1.2 MGD (million gallons per day)2022
SPARTA WASTEWATER TRMTSparta1.2 MGD (million gallons per day)2022
GRAND VALLEY COLLEGE STPMuskegon1.2 MGD (million gallons per day)2022
HOWELL STPHowell1.2 MGD (million gallons per day)2022
GUN LAKE AREA STPShelbyville1.2 MGD (million gallons per day)2022
COLDWATERColdwater1.2 MGD (million gallons per day)2022
ROLLIN-WOODSTOCK STPAddison1.2 MGD (million gallons per day)2022
ALLEGAN STPAllegan1.2 MGD (million gallons per day)2022
NEGAUNEE STPNegaunee1.2 MGD (million gallons per day)2022
TWO HARBORS WWTPTwo Harbors1.2 MGD (million gallons per day)2022
Glaize Creek WWTPBarnhart1.2 MGD (million gallons per day)2022
Moscow Mills Crooked CreekMoscow Mills1.2 MGD (million gallons per day)2022
LEWISTOWN WWT FACILITYLewistown1.2 MGD (million gallons per day)2022
YORK WWTPYork1.2 MGD (million gallons per day)2022
Lancaster WWTFLancaster1.2 MGD (million gallons per day)2022
Pease Development WWTFPortsmouth1.2 MGD (million gallons per day)2022
Pompton Lakes Borough CS/STPPompton Lakes1.2 MGD (million gallons per day)2022
Tucumcari, City ofTucumcari1.2 MGD (million gallons per day)2022
RATON, CITY OF STPRaton1.2 MGD (million gallons per day)2022
Aztec, City ofAztec1.2 MGD (million gallons per day)2022
Catharine Valley Water Reclamation Facility (CVWRF)Watkins Glen1.2 MGD (million gallons per day)2022
Fonda (V) Fonda-Fultonville WWTPFonda1.2 MGD (million gallons per day)2022
Warsaw (V) WWTP & Collection SystemWarsaw1.2 MGD (million gallons per day)2022
ERWIN WWTPErwin1.2 MGD (million gallons per day)2022
TROY WWTPTroy1.2 MGD (million gallons per day)2022
Allen Co American #2 WWTPLima1.2 MGD (million gallons per day)2022
Brookville WWTP & Sewer SystemBrookville1.2 MGD (million gallons per day)2022
Erie Co Sawmill Creek WWTPHuron1.2 MGD (million gallons per day)2022
Johnstown WWTP & Sewer SystemJohnstown1.2 MGD (million gallons per day)2022
Milford WWTP & Sewer SystemMilford1.2 MGD (million gallons per day)2022
Scioto Co Wheelersburg Sewer District No. 2 WWTP & SewersWheelersburg1.2 MGD (million gallons per day)2022
West Jefferson WWTP & Sewer SystemWest Jefferson1.2 MGD (million gallons per day)2022
West Milton WWTP & Sewer SystemWest Milton1.2 MGD (million gallons per day)2022
MOUNT UNION BOROMount Union1.2 MGD (million gallons per day)2022
FOREST HILLS SOUTH FORK STPSouth Fork1.2 MGD (million gallons per day)2022
EDINBORO BORO STPEdinboro1.2 MGD (million gallons per day)2022
CONCORD TWP SEW AUTHGlen Mills1.2 MGD (million gallons per day)2022
PIEDMONT WTPPiedmont1.2 MGD (million gallons per day)2022
NORTH MOUSE CREEK WWTPAthens1.2 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.