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

Wastewater treatment plants in United States · Ohio

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817 inventory records · HydroWASTE v1.0 / United States

Data years: 2012. The inventory date does not establish current operation.

817 results

CompareNameNative sizeYear
Mount Vernon WWTP and Sewer SystemHW:3528917,798 population served2012
Lake Co Madison No 1 WWTPHW:3520217,680 population served2012
Painesville WWTP and Sewer SystemHW:3533317,503 population served2012
New Philadelphia WWTP and SewersHW:3531117,288 population served2012
Lancaster Upper Hocking WWTPHW:3520916,897 population served2012
Salem WWTP and Sewer SystemHW:3539316,850 population served2012
Eastern Ohio Regional WW AuthorityHW:3498816,520 population served2012
Portage Co Streetsboro Hudson Regional WWTPHW:3535716,400 population served2012
Norwalk WWTP and Sewer SystemHW:3532216,238 population served2012
Southwest Licking Community WSD WWTP and SewersHW:3517416,000 population served2012
Fostoria WWTP and Sewer SystemHW:3510815,395 population served2012
Clermont Co Nine Mile Creek WWTPHW:3504315,373 population served2012
Xenia Glady Run WWTP and SewersHW:3552315,203 population served2012
Bedford WWTP and Sewer SystemHW:3498315,006 population served2012
Summit Co Fishcreek WWTP 25HW:3543415,000 population served2012
Trumbull Co Mosquito Creek WWTPHW:3545415,000 population served2012
Conneaut WWTP and Sewer SystemHW:3505914,841 population served2012
Washington CH WWTP and SewersHW:3548314,660 population served2012
Fairfield Co Tussing Road WRFHW:3524714,608 population served2012
Clermont Co O Bannon Creek WWTPHW:3504514,249 population served2012
Tiffin WWTP and Sewer SystemHW:3544814,193 population served2012
Dover WWTP and Sewer SystemHW:3507614,100 population served2012
Delaware Co Lower Scioto WRFHW:3478314,000 population served2012
Logan Co Indian Lake SSD WWTPHW:3487414,000 population served2012
Lorain Philip Q Maiorana WWTPHW:3522714,000 population served2012
East Liverpool WWTP and Sewer SystemHW:3508713,939 population served2012
West Carrollton WWTP and Sewer SystemHW:3549213,818 population served2012
Circleville WWTP and Sewer SystemHW:3503413,485 population served2012
Xenia Ford Rd WWTP and SewersHW:3552213,482 population served2012
Greenville WWTP and Sewer SystemHW:3515513,230 population served2012
Bucyrus WWTP and Sewer SystemHW:3500613,224 population served2012
Geneva WWTP and Sewer SystemHW:3485613,190 population served2012
Pickerington WWTP and Sewer SystemHW:3534713,159 population served2012
Bellefontaine WWTP and Sewer SystemHW:3498513,069 population served2012
Celina WWTP and Sewer SystemHW:3496812,503 population served2012
Springboro WWTP and Sewer SystemHW:3542312,380 population served2012
London WWTP and Sewer SystemHW:3522512,250 population served2012
Englewood WWTP and Sewer SystemHW:3509612,235 population served2012
Ironton WWTP and Sewer SystemHW:3518012,000 population served2012
Urbana WWTP and Sewer SystemHW:3547312,000 population served2012
Wilmington WWTP and Sewer SystemHW:3551211,921 population served2012
Coshocton WWTP and Sewer SystemHW:3506311,800 population served2012
Amherst WWTP and Sewer SystemHW:3482411,797 population served2012
Galion WWTP and Sewer SystemHW:3512011,750 population served2012
Saint Marys WWTP and Sewer SystemHW:3539111,584 population served2012
Vermilion WWTP and Sewer SystemHW:3496011,400 population served2012
South Point WWTP and Sewer SystemHW:3541911,047 population served2012
Van Wert WWTP and Sewer SystemHW:3547410,690 population served2012
Put in Bay WWTP and Sewer SystemHW:3537310,450 population served2012
Wapakoneta WWTP and Sewer SystemHW:3547810,371 population served2012
Grafton WWTP and Sewer SystemHW:3514810,343 population served2012
Lawrence Co Union Rome SD WWTPHW:3546610,203 population served2012
Twin City WWTP and SewersHW:354659,862 population served2012
Shelby WWTP and Sewer SystemHW:354119,821 population served2012
Mahoning Co Campbell WWTPHW:350199,460 population served2012
Portage Co Franklin Hills WWTPHW:350009,444 population served2012
Napoleon WWTP and Sewer SystemHW:349649,318 population served2012
Bryan WWTP and Sewer SystemHW:350059,230 population served2012
Heath WWTP and Sewer SystemHW:351728,927 population served2012
Louisville WWTP and Sewer SystemHW:352328,904 population served2012
Harrison WWTP and Sewer SystemHW:351688,690 population served2012
Aurora Central WWTP and SewersHW:349588,659 population served2012
Orrville WWTP and Sewer SystemHW:348298,551 population served2012
Jackson WWTP and Sewer SystemHW:351818,452 population served2012
Kenton WWTP and Sewer SystemHW:351938,336 population served2012
Scioto Co Wheelersburg Sewer District No 2 WWTP and SewersHW:354008,225 population served2012
Oberlin WWTP and Sewer SystemHW:353258,195 population served2012
Bellevue WWTP and Sewer SystemHW:349868,193 population served2012
Eaton WWTP and Sewer SystemHW:350888,133 population served2012
Columbiana Co Elkton Regional WWTPHW:348148,100 population served2012
Clyde WWTP and Sewer SystemHW:349438,097 population served2012
Columbiana WWTP and Sewer SystemHW:348227,800 population served2012
Licking Co Buckeye Lake SD 1HW:352197,649 population served2012
Allen Co Shawnee 2 WWTPHW:347977,455 population served2012
Logan WWTP and Sewer SystemHW:352247,415 population served2012
New Carlisle WWTP and Sewer SystemHW:352957,330 population served2012
Hubbard WWTP and Sewer SystemHW:351797,218 population served2012
Belpre WWTP and Sewer SystemHW:349927,102 population served2012
Wauseon WWTP and Sewer SystemHW:354847,091 population served2012
Delphos WWTP and Sewer SystemHW:350736,944 population served2012
Canal Winchester WWTP and SewersHW:350216,888 population served2012
Waynesville WWTP and Sewer SystemHW:354886,836 population served2012
Willard WWTP and Sewer SystemHW:355076,806 population served2012
Upper Sandusky WWTP and Sewer SystemHW:354726,800 population served2012
Millersburg WWTP and Sewer SystemHW:352786,659 population served2012
Geneva on the Lake WWTP and SewersHW:348456,400 population served2012
Hillsboro WWTP and Sewer SystemHW:351766,368 population served2012
Rittman WWTP and Sewer SystemHW:348276,314 population served2012
Milford WWTP and Sewer SystemHW:352776,284 population served2012
Atwood Regional WSDHW:350266,258 population served2012
Gallipolis WWTP and Sewer SystemHW:351226,244 population served2012
Erie Co Sawmill Creek WWTPHW:350986,239 population served2012
Pickaway Correctional InstituteHW:353286,237 population served2012
Waverly WWTP and Sewer SystemHW:354856,200 population served2012
Union WWTP and Sewer SystemHW:354676,194 population served2012
Erie Co Huron Basin WWTPHW:350996,000 population served2012
Allen Co American Bath WWTPHW:347965,999 population served2012
Brookville WWTP and Sewer SystemHW:350045,884 population served2012
Nelsonville WWTP and Sewer SystemHW:352925,804 population served2012
Toronto WWTP and Sewer SystemHW:354525,676 population served2012

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.