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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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817 inventory records · HydroWASTE v1.0 / United States

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

817 results

CompareNameNative sizeYear
Wellston North WWTP and Sewer SystemHW:354905,663 population served2012
Ada WWTP and Sewer SystemHW:347305,582 population served2012
Canal Fulton WWTP and Sewer SystemHW:350205,509 population served2012
Newton Falls WWTP and Sewer SystemHW:353145,402 population served2012
Strongsville C WWTP and SewersHW:354315,400 population served2012
Caldwell WWTP and Sewer SystemHW:347735,369 population served2012
Ottawa WWTP and Sewer SystemHW:353305,286 population served2012
North Royalton WW District BHW:353215,200 population served2012
Strongsville B WWTP and SewersHW:354305,200 population served2012
Elida WWTP and Sewer SystemHW:350925,195 population served2012
Chardon WWTP and Sewer SystemHW:350315,156 population served2012
Chagrin Falls WWTP and Sewer SystemHW:350305,055 population served2012
Sewer District 700 ChippewaHW:352655,000 population served2012
Saint Clairsville North WWTPHW:353885,000 population served2012
East Palestine WWTP and Sewer SystemHW:348134,917 population served2012
Greenfield WWTP and Sewer SystemHW:351544,906 population served2012
Brown Twp_Malvern Sewer DistrictHW:352524,900 population served2012
Aurora Westerly WWTP and SewersHW:349594,897 population served2012
Archbold WWTP and Sewer SystemHW:348854,860 population served2012
Tuscarawas Co Wilkshire Hills WWTPHW:347764,740 population served2012
New Lexington WWTP and Sewer SystemHW:347784,689 population served2012
West Milton WWTP and Sewer SystemHW:354984,645 population served2012
Crestline WWTP and Sewer SystemHW:350654,630 population served2012
Newcomerstown WWTP and SewersHW:352964,581 population served2012
Genoa WWTP and Sewer SystemHW:351424,524 population served2012
Wellington WWTP and Sewer SystemHW:354894,511 population served2012
Mingo Junction WWTP and Sewer SystemHW:352824,500 population served2012
Trumbull Co Brookfield SD 1 and 2HW:354554,500 population served2012
Coldwater WWTP and Sewer SystemHW:349694,482 population served2012
Wellsville WWTP and Sewer SystemHW:348214,420 population served2012
Sebring WWTP and Sewer SystemHW:354064,420 population served2012
Roseville WWTP and Sewer SystemHW:353854,419 population served2012
Jamestown WWTP and Sewer SystemHW:351824,403 population served2012
Sunbury WWTP and Collection SystemHW:354434,389 population served2012
Navarre WWTP and Sewer SystemHW:352914,380 population served2012
West Jefferson WWTP and Sewer SystemHW:354954,331 population served2012
Shelby Co Lake Loramie WWTPHW:347924,319 population served2012
New Lebanon WWTP and Sewer SystemHW:353004,231 population served2012
Barnesville WWTP and Sewer SystemHW:349774,225 population served2012
Blanchester WWTP and Sewer SystemHW:349384,220 population served2012
Lexington WWTP and Sewer SystemHW:352174,165 population served2012
Saint Henry WWTP and Sewer SystemHW:353904,116 population served2012
Columbiana Co Gilford Lake WWTPHW:348204,068 population served2012
Wintersville WWTP and Sewer SystemHW:355164,067 population served2012
Oak Harbor WWTP and Sewer SystemHW:353234,041 population served2012
Jefferson Co Barber s Hollow WWTPHW:351844,008 population served2012
Montpelier WWTP and Sewer SystemHW:348984,003 population served2012
Marion Co Sewer District 7 Water Reclamation PlantHW:348884,000 population served2012
The Plains WWTP and SewersHW:349324,000 population served2012
Pataskala WWTP and Sewer SystemHW:353354,000 population served2012
Fairfield Co Little Walnut SycamoreHW:352553,988 population served2012
Minerva WWTP and Sewer SystemHW:352813,934 population served2012
Carey WWTP and Sewer SystemHW:348953,901 population served2012
Bluffton WWTP and SewersHW:349973,896 population served2012
Greene Co Cedarville WWTP and SewersHW:350293,828 population served2012
West Union WWTP and Sewer SystemHW:355053,792 population served2012
Yellow Springs WWTP and Sewer SystemHW:355243,761 population served2012
Byesville John R Smalley WWTP and Sewer SystemHW:350143,700 population served2012
Georgetown WWTP and Sewer SystemHW:351433,691 population served2012
Shadyside WWTP and Sewer SystemHW:354093,675 population served2012
Hicksville WWTP and Sewer SystemHW:349513,649 population served2012
Saint Paris WWTP and Sewer SystemHW:353923,598 population served2012
Paulding WWTP and Sewer SystemHW:353363,595 population served2012
Jefferson WWTP and Sewer SystemHW:351833,572 population served2012
Granville WWTP and Sewer SystemHW:351503,500 population served2012
Richland Co Eastview WWTPHW:353773,500 population served2012
Johnstown WWTP and Sewer SystemHW:351893,440 population served2012
Pleasant Valley RSD WWTP and SewersHW:347633,432 population served2012
MSD Indian Creek Drainage BasinHW:350523,393 population served2012
North Baltimore WWTP and Sewer SystemHW:353173,351 population served2012
Mount Orab WWTP and Sewer SystemHW:352873,315 population served2012
Cadiz WWTP and Sewer SystemHW:350153,308 population served2012
Baltimore WWTP and Sewer SystemHW:349753,307 population served2012
Swanton WWTP and Sewer SystemHW:354453,307 population served2012
Carrollton WWTP and Sewer SystemHW:350273,300 population served2012
Mount Gilead WWTP and Sewer SystemHW:349063,290 population served2012
Clermont Co Wards Corners WWTPHW:350483,250 population served2012
Tuscarawas Co Sandyville East Sparta WWTP and SewerHW:347743,220 population served2012
Lake Co Heatherstone WWTPHW:352033,200 population served2012
Ashville WWTP and Sewer SystemHW:349213,174 population served2012
Madison Co SD 2 Choctaw Lake WWTPHW:347953,149 population served2012
Delta WWTP and Sewer SystemHW:350743,100 population served2012
Stark Co Magnolia WWTPHW:352503,100 population served2012
Lodi WWTP and Sewer SystemHW:352213,061 population served2012
Doylestown WWTP and Sewer SystemHW:350773,051 population served2012
Stark Co Bob O Link Allotment WWTPHW:355013,051 population served2012
Plain City WWTP and Sewer SystemHW:353513,040 population served2012
Belmont Co Fox Shannon WWTPHW:349903,005 population served2012
Fairfield Co Sycamore Creek WRFHW:348103,000 population served2012
Trimble Township WWT DistrictHW:347452,982 population served2012
Loudonville WWTP and Sewer SystemHW:349252,981 population served2012
Mercer Co Montezuma_Club Island SDHW:355292,962 population served2012
Madison WWTP and Sewer SystemHW:352452,921 population served2012
New Bremen WWTP and Sewer SystemHW:352942,909 population served2012
New Concord WWTP and Sewer SystemHW:352972,901 population served2012
Hebron WWTP and Sewer SystemHW:351732,820 population served2012
Allen Co American 2 WWTPHW:347982,806 population served2012
Windham WWTP and Sewer SystemHW:355152,806 population served2012
Lakengren WWTP and Sewer SystemHW:353722,800 population served2012
Minster WWTP and Sewer SystemHW:352832,794 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.