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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
NIAGARA WASTEWATERNiagara0.01 MGD (million gallons per day)2022
PEKIN WASTEWATERPekin0.01 MGD (million gallons per day)2022
PLAZA WASTEWATERPlaza0.01 MGD (million gallons per day)2022
PORTAL WASTEWATERPortal0.01 MGD (million gallons per day)2022
RHAME WASTEWATERRhame0.01 MGD (million gallons per day)2022
RYDER WASTEWATERRyder0.01 MGD (million gallons per day)2022
SOLEN WASTEWATERSolen0.01 MGD (million gallons per day)2022
SOURIS WASTEWATERSouris0.01 MGD (million gallons per day)2022
TOLLEY WASTEWATERTolley0.01 MGD (million gallons per day)2022
WOODWORTH WASTEWATERWoodworth0.01 MGD (million gallons per day)2022
FORT RANSOM WASTEWATERFort Ransom0.01 MGD (million gallons per day)2022
MARION WASTEWATERMarion0.01 MGD (million gallons per day)2022
MAPLE RIVER WRD (CHAFFEE WASTEWATER)Walcott0.01 MGD (million gallons per day)2022
Fairview Village STP and collection systemFairview0.01 MGD (million gallons per day)2022
Pleasant Valley RSD Rustic Acres WWTP & SewersChillicothe0.01 MGD (million gallons per day)2022
Highland Co Rolling Acres WWTPHillsboro0.01 MGD (million gallons per day)2022
Wayne Co Gingery Allotment WWTP & SewersWooster0.01 MGD (million gallons per day)2022
Marion Co Harmony Subdivision SD #5BMarion0.01 MGD (million gallons per day)2022
Geauga Co Surrey Downs WWTPChardon0.01 MGD (million gallons per day)2022
Geauga Co Plymouth Acres WWTPEast Claridon0.01 MGD (million gallons per day)2022
Sewer District #9Hinckley0.01 MGD (million gallons per day)2022
Moreland Hills Greentree WWTPChagrin Falls0.01 MGD (million gallons per day)2022
Auglaize Co Sherwood Forest WWTPWapakoneta0.01 MGD (million gallons per day)2022
Auglaize Co Forest Lane WWTPNew Bremen0.01 MGD (million gallons per day)2022
Auglaize Co K/Z Sewer DistrictWapakoneta0.01 MGD (million gallons per day)2022
Union Co Darby Meadows WWTPMarysville0.01 MGD (million gallons per day)2022
Wilson WWTP and Sewer SystemBeallsville0.01 MGD (million gallons per day)2022
Crawford Co Morton SubdivisionBucyrus0.01 MGD (million gallons per day)2022
WOODWARD INDUSTRIAL AIR PARK WWTWoodward0.01 MGD (million gallons per day)2022
LIMA WWTWewoka0.01 MGD (million gallons per day)2022
BEAVER CO. #2 (GATE) WWTGate0.01 MGD (million gallons per day)2022
GREENFIELD WWTGreenfield0.01 MGD (million gallons per day)2022
RATLIFF CITY WWTRatliff City0.01 MGD (million gallons per day)2022
LAKELAND WWTLawton0.01 MGD (million gallons per day)2022
HILLSDALE WWTHillsdale0.01 MGD (million gallons per day)2022
MANCHESTER WWTManchester0.01 MGD (million gallons per day)2022
HEADRICK UT WWTHeadrick0.01 MGD (million gallons per day)2022
ADDINGTON RWD #1 WWTAddington0.01 MGD (million gallons per day)2022
COUNCIL HILL WWTCouncil Hill0.01 MGD (million gallons per day)2022
HANNA PWA WWTHanna0.01 MGD (million gallons per day)2022
NEW ALLUWE WWTChelsea0.01 MGD (million gallons per day)2022
STEPHENS CO. #4 (LOCO) WWTLoco0.01 MGD (million gallons per day)2022
SHARON WWTSharon0.01 MGD (million gallons per day)2022
HARTLETON BORO STPHartleton0.01 MGD (million gallons per day)2022
OAKDALE WWTPOakdale0.01 MGD (million gallons per day)2022
Plant #1 - HarlingenHarlingen0.01 MGD (million gallons per day)2022
McAdoo WWTPMcadoo0.01 MGD (million gallons per day)2022
Ryegate Fire District No 2 WWTFEast Ryegate0.01 MGD (million gallons per day)2022
Whitingham Village WWTFWhitingham0.01 MGD (million gallons per day)2022
Taftsville WWTFTaftsville0.01 MGD (million gallons per day)2022
Page County HS & MS STP-Page CountyShenandoah0.01 MGD (million gallons per day)2022
DRYDEN POTWDryden0.01 MGD (million gallons per day)2022
MNTN TOP PSD - GORMANIA WWTPGormania0.01 MGD (million gallons per day)2022
Flambeau Correctional Center WastewaterHawkins0.01 MGD (million gallons per day)2022
Brighton Dale Links WWTPKansasville0.01 MGD (million gallons per day)2022
WAUMANDEE SD #1 STPArcadia0.01 MGD (million gallons per day)2022
NORTH BEND SD #1 WWTPMelrose0.01 MGD (million gallons per day)2022
MANVILLE LAGOONManville0.01 MGD (million gallons per day)2022
Opal LagoonKemmerer0.01 MGD (million gallons per day)2022
Nikolai LagoonNikolai0.009 MGD (million gallons per day)2022
Wilseyville STPWilseyville0.009 MGD (million gallons per day)2022
FENN S/T FACILITYFenn0.009 MGD (million gallons per day)2022
VIOLA S.T. FACILITIESViola0.009 MGD (million gallons per day)2022
TRUESDALE WASTEWATERTruesdale0.009 MGD (million gallons per day)2022
RANDALIA WWTRandalia0.009 MGD (million gallons per day)2022
SUSANK WWTPConcordia0.009 MGD (million gallons per day)2022
JF CO S D #8 WIND-N-WAVEOskaloosa0.009 MGD (million gallons per day)2022
Letcher Co SD - Millstone Alt STPMillstone0.009 MGD (million gallons per day)2022
ST. JAMES WEST BANK STPLutcher0.009 MGD (million gallons per day)2022
WHITNEYVILLE S.T.Machias0.009 MGD (million gallons per day)2022
GORMAN WWTPOakland0.009 MGD (million gallons per day)2022
Village of Guilford WWTFGuilford0.009 MGD (million gallons per day)2022
CGCRCSD Major Custom Cable WWTFJackson0.009 MGD (million gallons per day)2022
North Cass County S.D.Belton0.009 MGD (million gallons per day)2022
ST. HELENA WWTPSaint Helena0.009 MGD (million gallons per day)2022
SOUTH BEND STPSouth Bend0.009 MGD (million gallons per day)2022
Mosquero, Village ofMosquero0.009 MGD (million gallons per day)2022
Bethlehem (T) S. Albany SD STPDelmar0.009 MGD (million gallons per day)2022
Highland Co Lakeside Estates WWTPGreenfield0.009 MGD (million gallons per day)2022
Allen Co Mast Estates WWTPBluffton0.009 MGD (million gallons per day)2022
Richland Co Country Meadows WWTPShelby0.009 MGD (million gallons per day)2022
HOLLISTER WWTHollister0.009 MGD (million gallons per day)2022
PERRY TOWNSHIP CSHadley0.009 MGD (million gallons per day)2022
Crockett Heights WWTPOzona0.009 MGD (million gallons per day)2022
Rosenberg North - Rosenberg WWTPRosenberg0.009 MGD (million gallons per day)2022
Welder Park WWTPSinton0.009 MGD (million gallons per day)2022
Main Street Sewer DistrictFreeland0.009 MGD (million gallons per day)2022
CONRATH STPConrath0.009 MGD (million gallons per day)2022
Bairoil - North LagoonBairoil0.009 MGD (million gallons per day)2022
Napakiak LagoonNapakiak0.008 MGD (million gallons per day)2022
Chignik Lake LagoonChignik Lake0.008 MGD (million gallons per day)2022
Golovin LagoonWhite Mountain0.008 MGD (million gallons per day)2022
Letha Sewage LagoonsLetha0.008 MGD (million gallons per day)2022
DOLLIVER STPDolliver0.008 MGD (million gallons per day)2022
RL CO S D DEEP CREEK WWTPManhattan0.008 MGD (million gallons per day)2022
JF CO S D #3 WWTPOskaloosa0.008 MGD (million gallons per day)2022
SN CO SD #6 WWTPTopeka0.008 MGD (million gallons per day)2022
MANCHESTER WWTPAbilene0.008 MGD (million gallons per day)2022
GREENRIDGE FORESTRY CAMPFlintstone0.008 MGD (million gallons per day)2022
SHERMAN TWP STPHubbell0.008 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.