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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
Cash SUDGreenville0.7 MGD (million gallons per day)2022
Harris Co WCID #76 WWTPHouston0.7 MGD (million gallons per day)2022
Champions WWTPHouston0.7 MGD (million gallons per day)2022
Fulshear WWTPFulshear0.7 MGD (million gallons per day)2022
Cypress Klein UD WWTPHouston0.7 MGD (million gallons per day)2022
Harris Co WCID #92 WWTPSpring0.7 MGD (million gallons per day)2022
Memorial Chase WWTPHouston0.7 MGD (million gallons per day)2022
Richey Road WWTPHouston0.7 MGD (million gallons per day)2022
Brandon WWTFBrandon0.7 MGD (million gallons per day)2022
Claypool Hill/Wardell WWTPCedar Bluff0.7 MGD (million gallons per day)2022
MOUNT JACKSON STPMount Jackson0.7 MGD (million gallons per day)2022
BERRYVILLE STPBerryville0.7 MGD (million gallons per day)2022
EDGERTON STPEdgerton0.7 MGD (million gallons per day)2022
JOHNSON CREEK WWTPJohnson Creek0.7 MGD (million gallons per day)2022
SISTER BAY WWTPSister Bay0.7 MGD (million gallons per day)2022
WEYAUWEGA STPWeyauwega0.7 MGD (million gallons per day)2022
Lyons WPCP #1 EastLyons0.695 MGD (million gallons per day)2022
SHADY COVE STPShady Cove0.694 MGD (million gallons per day)2022
Madison SouthMadison0.693 MGD (million gallons per day)2022
Dane-Iowa WWTFMazomanie0.693 MGD (million gallons per day)2022
BLOOMFIELD WWTPBloomfield0.692 MGD (million gallons per day)2022
WOODWARD STLWoodward0.692 MGD (million gallons per day)2022
PROVIDENCEProvidence0.692 MGD (million gallons per day)2022
GILBERT WWTPGilbert0.691 MGD (million gallons per day)2022
Lake Wildwood WWTPPenn Valley0.69 MGD (million gallons per day)2022
BREESE STPBreese0.69 MGD (million gallons per day)2022
Augusta Regional Sewer AuthorityBrooksville0.69 MGD (million gallons per day)2022
Hopedale Sewerage Collection System and WWTFHopedale0.69 MGD (million gallons per day)2022
AITKIN WWTPAitkin0.69 MGD (million gallons per day)2022
PIGEON CREEK STPCharleroi0.69 MGD (million gallons per day)2022
Cypress Hill WWTPCypress0.69 MGD (million gallons per day)2022
LA CENTER STPLa Center0.69 MGD (million gallons per day)2022
Pocahontas WWTPPocahontas0.685 MGD (million gallons per day)2022
COLFAX WWTPColfax0.685 MGD (million gallons per day)2022
CAMERON STPCameron0.685 MGD (million gallons per day)2022
Potosi WWTPPotosi0.683 MGD (million gallons per day)2022
HINCKLEY WWTPHinckley0.682 MGD (million gallons per day)2022
NEW SHARON WTPNew Sharon0.681 MGD (million gallons per day)2022
Lyons WPCP #2 NorthLyons0.68 MGD (million gallons per day)2022
PARMA SEWAGE LAGOONParma0.68 MGD (million gallons per day)2022
SOLON WWTPSolon0.68 MGD (million gallons per day)2022
SALYERSVILLE STPSalyersville0.68 MGD (million gallons per day)2022
LEONARDTOWN STPLeonardtown0.68 MGD (million gallons per day)2022
HOYT LAKES WWTPHoyt Lakes0.68 MGD (million gallons per day)2022
STAPLES WWTPStaples0.68 MGD (million gallons per day)2022
Malden Ind. Park LagMalden0.68 MGD (million gallons per day)2022
Whitehouse WWTPWhitehouse0.68 MGD (million gallons per day)2022
BLAINE STPBlaine0.68 MGD (million gallons per day)2022
OCONTO FALLS STPOconto Falls0.68 MGD (million gallons per day)2022
MILACA WWTPMilaca0.679 MGD (million gallons per day)2022
Sheridan WWTPSheridan0.676 MGD (million gallons per day)2022
Bald Knob WWTPBald Knob0.675 MGD (million gallons per day)2022
ESSEXVILLE STPEssexville0.675 MGD (million gallons per day)2022
ROSEAU WWTPRoseau0.675 MGD (million gallons per day)2022
SCOTLAND NECK WWTPScotland Neck0.675 MGD (million gallons per day)2022
DYER WWTPDyer0.675 MGD (million gallons per day)2022
Timber Creek WWTPHouston0.675 MGD (million gallons per day)2022
MADAWASKA WWTFMadawaska0.674 MGD (million gallons per day)2022
HAWARDEN STPHawarden0.672 MGD (million gallons per day)2022
SERPENT LAKE SD WWTFCrosby0.672 MGD (million gallons per day)2022
Roseville WWTP & Sewer SystemRoseville0.671 MGD (million gallons per day)2022
SALISBURY, TOWN OFSalisbury0.67 MGD (million gallons per day)2022
Eustis- Eastern WWTFEustis0.67 MGD (million gallons per day)2022
Vidalia Southeast Collection (LAS)Vidalia0.67 MGD (million gallons per day)2022
ST ANTHONY SEWAGE LAGOONAshton0.67 MGD (million gallons per day)2022
BROWNSTOWN WWTPBrownstown0.67 MGD (million gallons per day)2022
CENTREVILLE WWTPCentreville0.67 MGD (million gallons per day)2022
SNOW HILL WWTPSnow Hill0.67 MGD (million gallons per day)2022
ROSCOMMON TWP WWTFHoughton Lake0.67 MGD (million gallons per day)2022
TIPTONVILLE CITY LAGOONTiptonville0.67 MGD (million gallons per day)2022
Fabens WWTPFabens0.67 MGD (million gallons per day)2022
Tiger Creek WWTPVidor0.67 MGD (million gallons per day)2022
GORDONSVILLE STPGordonsville0.67 MGD (million gallons per day)2022
MONTESANO WWPCPMontesano0.67 MGD (million gallons per day)2022
LOMIRA WWTPLomira0.667 MGD (million gallons per day)2022
ATTICA WWTPAttica0.665 MGD (million gallons per day)2022
Brewster WWTP & Sewer SystemBrewster0.665 MGD (million gallons per day)2022
Soperton WPCPSoperton0.663 MGD (million gallons per day)2022
Shelbina WWTPShelbina0.662 MGD (million gallons per day)2022
STONINGTON BOROUGH WPCFStonington0.66 MGD (million gallons per day)2022
KNOXVILLE STPKnoxville0.66 MGD (million gallons per day)2022
LEROY SEWAGE TREATMENT PLLe Roy0.66 MGD (million gallons per day)2022
Fairbury STP & Collection SystemFairbury0.66 MGD (million gallons per day)2022
HOLTON WWTPHolton0.66 MGD (million gallons per day)2022
Talbot County Region II WWTPEaston0.66 MGD (million gallons per day)2022
Seneca (Co) Five Points WWTP & CS - SD#2Romulus0.66 MGD (million gallons per day)2022
PERRY WWTPerry0.66 MGD (million gallons per day)2022
Countryside WWTPLeague City0.66 MGD (million gallons per day)2022
Brocton (V) WWTPBrocton0.658 MGD (million gallons per day)2022
ISANTI WWTPIsanti0.657 MGD (million gallons per day)2022
RIVERSIDE WWTPRiverside0.654 MGD (million gallons per day)2022
ROCKFORD WWTPRockford0.651 MGD (million gallons per day)2022
UNIONTOWN WWTPUniontown0.65 MGD (million gallons per day)2022
Camp Verde SD WWTFCamp Verde0.65 MGD (million gallons per day)2022
Oakmont WWTPSanta Rosa0.65 MGD (million gallons per day)2022
BUELLTON WWTFBuellton0.65 MGD (million gallons per day)2022
RIO VISTA WWTFRio Vista0.65 MGD (million gallons per day)2022
ROCKTON SEWAGE TREATMENTRockton0.65 MGD (million gallons per day)2022
Roxana, Village ofSouth Roxana0.65 MGD (million gallons per day)2022
SPARTA, SOUTHEAST STPSparta0.65 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.