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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in United States · Ohio

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808 inventory records · EPA Clean Watersheds Needs Survey 2022

Data years: 2022. The inventory date does not establish current operation.

808 results

CompareNameNative sizeYear
Hocking Co Lake Moor Estates WWTPLogan0.03 MGD (million gallons per day)2022
Pickaway Co Circle Hills WWTPCircleville0.03 MGD (million gallons per day)2022
Muskingum Co SD #57 AdamsvilleAdamsville0.03 MGD (million gallons per day)2022
Tuscarawas Co Stone Creek WWTPStone Creek0.03 MGD (million gallons per day)2022
Greene Co Clifton WWTP and SewersCedarville0.029 MGD (million gallons per day)2022
Hocking Co Rockbridge WWTPRockbridge0.028 MGD (million gallons per day)2022
Trumbull Co Fox Den WWTPWarren0.028 MGD (million gallons per day)2022
Stark Co Skyland Hills MHP WWTPMinerva0.028 MGD (million gallons per day)2022
Holmes County Jail & Training Center WWTPMillersburg0.026 MGD (million gallons per day)2022
Delaware Co Hoover Woods WWTPDelaware0.026 MGD (million gallons per day)2022
Charles Mill Lake Campground Collection System and WWTPMansfield0.025 MGD (million gallons per day)2022
Franklin Co Taylor Estates WWTPWesterville0.025 MGD (million gallons per day)2022
Cecil WWTP & Sewer SystemCecil0.025 MGD (million gallons per day)2022
Geauga Co Scarsdale WWTPChagrin Falls0.025 MGD (million gallons per day)2022
Kirtland Rockwood Ledges WWTPWilloughby0.025 MGD (million gallons per day)2022
Trumbull Co Kinsman WWTPKinsman0.025 MGD (million gallons per day)2022
Preble Co Sewer District #3 WWTPWest Elkton0.025 MGD (million gallons per day)2022
Crawford Co Linlare VillageBucyrus0.025 MGD (million gallons per day)2022
Latty WWTP & Sewer SystemLatty0.024 MGD (million gallons per day)2022
Rodney Village II WWTP & SewersGallipolis0.024 MGD (million gallons per day)2022
Moscow WWTP and Sewer SystemMoscow0.024 MGD (million gallons per day)2022
Knox Co Pleasant View Acres WWTPMount Vernon0.024 MGD (million gallons per day)2022
Lake Co Dodd's Hill WWTPPainesville0.024 MGD (million gallons per day)2022
Darke Co Rolin Acres WWTPGreenville0.024 MGD (million gallons per day)2022
Philothea Sewer District WWTPCelina0.024 MGD (million gallons per day)2022
Hocking Co Haydenville WWTPLogan0.023 MGD (million gallons per day)2022
Holmes Co Mount Hope WWTP & SewersMount Hope0.022 MGD (million gallons per day)2022
Washington Co Deerfield Estates WWTP and SewersMarietta0.022 MGD (million gallons per day)2022
Jenera WWTP and Sewer SystemJenera0.022 MGD (million gallons per day)2022
Catawba WWTP & Sewer SystemCatawba0.022 MGD (million gallons per day)2022
Knox County Mount Liberty WWTPMount Liberty0.022 MGD (million gallons per day)2022
Lake Co Rio Grande WWTPPainesville0.022 MGD (million gallons per day)2022
Auglaize Co Beverly Hills WWTPWapakoneta0.022 MGD (million gallons per day)2022
Knox Co Amity WWTPMount Vernon0.021 MGD (million gallons per day)2022
Village of Dexter City WWTP & collection systemDexter City0.02 MGD (million gallons per day)2022
Kelley's Island WWTP and collection systemKelleys Island0.02 MGD (million gallons per day)2022
Delaware County Home WWTPDelaware0.02 MGD (million gallons per day)2022
Union Co Parrott Village WWTPMarysville0.02 MGD (million gallons per day)2022
Columbiana Co Skyview Acres WWTPWellsville0.02 MGD (million gallons per day)2022
Columbiana Co Roseview Acres WWTPLisbon0.02 MGD (million gallons per day)2022
Shelby Co Hickory Dell Estates WWTPSidney0.02 MGD (million gallons per day)2022
Fulton Co Pleasant View WWTPDelta0.02 MGD (million gallons per day)2022
Lake Co Sunshine Acres WWTPPainesville0.02 MGD (million gallons per day)2022
Lorain Co Plum Creek WWTPColumbia Station0.02 MGD (million gallons per day)2022
Auglaize Co Pleasantview EstatesSaint Marys0.02 MGD (million gallons per day)2022
Pickaway Co Knollwood Village WWTPCircleville0.02 MGD (million gallons per day)2022
Sandusky Co Westwood AcresFremont0.02 MGD (million gallons per day)2022
Trumbull Co Vienna #1 WWTPVienna0.019 MGD (million gallons per day)2022
Rome Village WWTP & collection systemRome0.018 MGD (million gallons per day)2022
Amesville Cluster Sewers and WWTPsAmesville0.018 MGD (million gallons per day)2022
Clark Co KTK WWTPSpringfield0.017 MGD (million gallons per day)2022
Marion Co North Quarry Subdivision WWTPMarion0.016 MGD (million gallons per day)2022
Knox County Brandon WWTPMount Vernon0.016 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
Fayette Co Flakes Ford Estates WWTPWashington Court House0.014 MGD (million gallons per day)2022
Shelby Co Fair Haven WWTPSidney0.013 MGD (million gallons per day)2022
Kirtland Shenandoah Estates WWTPWilloughby0.013 MGD (million gallons per day)2022
NWWSD Bairdstown AreaNorth Baltimore0.013 MGD (million gallons per day)2022
Geauga Co Willow Hills WWTPChester0.012 MGD (million gallons per day)2022
Sewer District #11Hinckley0.012 MGD (million gallons per day)2022
Auglaize Co Arrowhead Estates WWTPUniopolis0.012 MGD (million gallons per day)2022
Trumbull Co Newton Falls #2 WWTPWarren0.012 MGD (million gallons per day)2022
Trumbull Co Warren #3 WWTPLeavittsburg0.012 MGD (million gallons per day)2022
Knox County Jelloway WWTPDanville0.011 MGD (million gallons per day)2022
Carroll County Home Golden Age Retreat WWTPCarrollton0.011 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
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
Tuscarawas Co Kerr Allotment WWTPNew Philadelphia0.008 MGD (million gallons per day)2022
Fairfield Co Lakeside Estates WWTPPickerington0.008 MGD (million gallons per day)2022
Defiance Co Middle Gordon Creek WWTP & SewersHicksville0.008 MGD (million gallons per day)2022
Geauga Co Wenhaven WWTPChagrin Falls0.008 MGD (million gallons per day)2022
Auglaize Co Sharlon WWTPNew Knoxville0.008 MGD (million gallons per day)2022
Richland Co Lust Subdivision WWTPMansfield0.008 MGD (million gallons per day)2022
Darke Co Stillwater Golf EstatesVersailles0.008 MGD (million gallons per day)2022
Union Co Crottinger EstatesPlain City0.007 MGD (million gallons per day)2022
Union Co Tawa Estates WWTPRichwood0.007 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.