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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
CUSICK STPCusick0.07 MGD (million gallons per day)2022
GARFIELD STPGarfield0.07 MGD (million gallons per day)2022
COLFAX PSDColfax0.07 MGD (million gallons per day)2022
PCSPSD - BRUCETON MILLS WWTPBruceton Mills0.07 MGD (million gallons per day)2022
LAKE HOLCOMBE SD #1 STPHolcombe0.07 MGD (million gallons per day)2022
KENDALL STPKendall0.07 MGD (million gallons per day)2022
NORTH FREEDOM STPNorth Freedom0.07 MGD (million gallons per day)2022
SOUTH WAYNE STPSouth Wayne0.07 MGD (million gallons per day)2022
OAKDALE - WWTPOakdale0.07 MGD (million gallons per day)2022
SINCLAIR LAGOONRawlins0.07 MGD (million gallons per day)2022
HULETT LAGOONHulett0.07 MGD (million gallons per day)2022
NEBO STPNebo0.069 MGD (million gallons per day)2022
ADAMS LAKE RSDWolcottville0.069 MGD (million gallons per day)2022
DELMAR STLDelmar0.069 MGD (million gallons per day)2022
ROYAL WSPRoyal0.069 MGD (million gallons per day)2022
FCPWSD #3, Charing CrossVilla Ridge0.069 MGD (million gallons per day)2022
Roaring River State ParkCassville0.069 MGD (million gallons per day)2022
Colton (T) SD#1 STP and SewersColton0.069 MGD (million gallons per day)2022
North GreenvilleTigerville0.069 MGD (million gallons per day)2022
PISGAH STLPisgah0.068 MGD (million gallons per day)2022
PRESCOTT, WWTPPrescott0.068 MGD (million gallons per day)2022
REDDELL PONDMamou0.068 MGD (million gallons per day)2022
NATCHEZ WWCTSNatchez0.068 MGD (million gallons per day)2022
Green Ridge WWTPGreen Ridge0.068 MGD (million gallons per day)2022
HOMER WWTPHomer0.068 MGD (million gallons per day)2022
MEAD WWTPMead0.068 MGD (million gallons per day)2022
VALPARAISO WWTPValparaiso0.068 MGD (million gallons per day)2022
New Athens WWTP and collection systemNew Athens0.068 MGD (million gallons per day)2022
VALLEY BROOK WWTOklahoma City0.068 MGD (million gallons per day)2022
Fritts WWTPComanche0.068 MGD (million gallons per day)2022
Buffalo SpringsComanche0.068 MGD (million gallons per day)2022
HANCOCK WWTPDeerfield0.068 MGD (million gallons per day)2022
MILLTOWN STPMilltown0.068 MGD (million gallons per day)2022
Commerce Davis House WPCPCommerce0.067 MGD (million gallons per day)2022
POTLATCH S/T FACILITYPotlatch0.067 MGD (million gallons per day)2022
LA CROSSE WWTPLa Crosse0.067 MGD (million gallons per day)2022
MEDARYVILLEMedaryville0.067 MGD (million gallons per day)2022
CALAMUS STLCalamus0.067 MGD (million gallons per day)2022
MARQUETTE WWTPMarquette0.067 MGD (million gallons per day)2022
MILAN WWTPMilan0.067 MGD (million gallons per day)2022
BRICELYN WWTPBricelyn0.067 MGD (million gallons per day)2022
DANUBE WWTPDanube0.067 MGD (million gallons per day)2022
LAKE SHORE WWTFPequot Lakes0.067 MGD (million gallons per day)2022
Oremus Ozark Ventures WWTPForsyth0.067 MGD (million gallons per day)2022
Queen City WWTPQueen City0.067 MGD (million gallons per day)2022
Morley WWTFMorley0.067 MGD (million gallons per day)2022
Old Monroe WWTPOld Monroe0.067 MGD (million gallons per day)2022
THOMPSON FALLS - TOWN OF - WWTPThompson Falls0.067 MGD (million gallons per day)2022
Willshire WWTP & Sewer SystemWillshire0.067 MGD (million gallons per day)2022
Senna Hills MUDAustin0.067 MGD (million gallons per day)2022
Chilton WWTPChilton0.067 MGD (million gallons per day)2022
Bardwell WWTPBardwell0.067 MGD (million gallons per day)2022
Brownsboro WWTPBrownsboro0.067 MGD (million gallons per day)2022
CHASEBURG STPChaseburg0.067 MGD (million gallons per day)2022
DON PEDRO WWTFLa Grange0.066 MGD (million gallons per day)2022
SANDBORN WWTPSandborn0.066 MGD (million gallons per day)2022
CAMPBELLSBURG WWTPCampbellsburg0.066 MGD (million gallons per day)2022
SPEARVILLE WWTPSpearville0.066 MGD (million gallons per day)2022
EKALAKA WWTPEkalaka0.066 MGD (million gallons per day)2022
Wappinger(T) Midpoint Pk SD (RoyalRi)Wappingers Falls0.066 MGD (million gallons per day)2022
Jeromesville WWTP and Sewer SystemJeromesville0.066 MGD (million gallons per day)2022
Stratton WWTP & Sewer SystemStratton0.066 MGD (million gallons per day)2022
ST PAUL STPSaint Benedict0.066 MGD (million gallons per day)2022
Sadler WWTPSadler0.066 MGD (million gallons per day)2022
Rice WWTPRice0.066 MGD (million gallons per day)2022
Maynard WWTPMaynard0.065 MGD (million gallons per day)2022
BOLINAS WWTFBolinas0.065 MGD (million gallons per day)2022
Vallecito/Douglas Flat WWTFDouglas Flat0.065 MGD (million gallons per day)2022
BOVILL S/T FACILITYBovill0.065 MGD (million gallons per day)2022
HILLSDALE STPHillsdale0.065 MGD (million gallons per day)2022
New Boston WWTPNew Boston0.065 MGD (million gallons per day)2022
JOPPA WWTPJoppa0.065 MGD (million gallons per day)2022
SCHNEIDER WWTPSchneider0.065 MGD (million gallons per day)2022
ELIZABETHTOWN STPElizabethtown0.065 MGD (million gallons per day)2022
Lake Bruce CD WWTPKewanna0.065 MGD (million gallons per day)2022
IRWIN WASTE STAB PONDSIrwin0.065 MGD (million gallons per day)2022
BUSSEY STLBussey0.065 MGD (million gallons per day)2022
UNIVERSITY PARK WASTEWATERUniversity Park0.065 MGD (million gallons per day)2022
TURON WWTPTuron0.065 MGD (million gallons per day)2022
DELPHOS WWTPDelphos0.065 MGD (million gallons per day)2022
LEBANON WWTPLebanon0.065 MGD (million gallons per day)2022
TROY WEST WWTP (MOSQUITO CRK)Troy0.065 MGD (million gallons per day)2022
Harbor View WWTPChesapeake City0.065 MGD (million gallons per day)2022
Ewell-Rhodes Point WWTPEwell0.065 MGD (million gallons per day)2022
ROSE CREEK WWTPRose Creek0.065 MGD (million gallons per day)2022
CANTON WWTPCanton0.065 MGD (million gallons per day)2022
BASSFIELD POTWBassfield0.065 MGD (million gallons per day)2022
Village of Windsor Place WWTFBoonville0.065 MGD (million gallons per day)2022
Skidmore WWTPSkidmore0.065 MGD (million gallons per day)2022
Essex WWTPEssex0.065 MGD (million gallons per day)2022
Altenburg WWTPAltenburg0.065 MGD (million gallons per day)2022
Bucklin East WWTPBucklin0.065 MGD (million gallons per day)2022
Livingston (Co) Groveland Station WWTPGroveland0.065 MGD (million gallons per day)2022
Essex (T) STPEssex0.065 MGD (million gallons per day)2022
Mount Blanchard WWTP and SewersMount Blanchard0.065 MGD (million gallons per day)2022
Higginsport WWTP & Sewer SystemHigginsport0.065 MGD (million gallons per day)2022
Lyons WWTP & Sewer SystemLyons0.065 MGD (million gallons per day)2022
West Manchester WWTP & Sewer SystemWest Manchester0.065 MGD (million gallons per day)2022
BOSWELL WWTBoswell0.065 MGD (million gallons per day)2022
BOYNTON PWA WWTBoynton0.065 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.