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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
Somerset WWTP and Sewer SystemHW:354161,549 population served2012
Haskins WWTP and Sewer SystemHW:351711,544 population served2012
Butler Co New Miami WWTPHW:353011,542 population served2012
Orwell WWTP and Sewer SystemHW:348511,529 population served2012
Leesburg WWTP and Sewer SystemHW:352131,528 population served2012
West Salem WWTP and Sewer SystemHW:348381,501 population served2012
Holmes Co Berlin Village WWTP and SewersHW:347381,500 population served2012
Milan WWTP and Sewer SystemHW:352761,500 population served2012
Forest WWTP and Sewer SystemHW:349091,488 population served2012
Monroeville WWTP and Sewer SystemHW:349351,483 population served2012
Yorkville WWTP and Sewer SystemHW:355251,480 population served2012
Roaming Shores WWTP and Sewer SystemHW:348461,469 population served2012
Pioneer WWTP and Sewer SystemHW:348971,460 population served2012
Fort Recovery WWTP and SewersHW:349671,450 population served2012
Centerburg WWTP and Sewer SystemHW:349551,432 population served2012
Walnut Creek Sewer DistrictHW:353531,430 population served2012
Elmore WWTP and Sewer SystemHW:350931,426 population served2012
Dresden WWTP and Sewer SystemHW:350781,423 population served2012
Bethesda WWTP and Sewer SystemHW:349941,413 population served2012
Butler Co Queen Acres WRFHW:350101,400 population served2012
Salineville WWTP and Sewer SystemHW:348231,397 population served2012
West Alexandria WWTP and Sewer SystemHW:354911,395 population served2012
New Waterford WWTP and Sewer SystemHW:353151,391 population served2012
Dalton WWTP and Sewer SystemHW:348351,382 population served2012
Scioto Co West Portsmouth WWTP and SewersHW:354011,372 population served2012
Ansonia WWTP and SewersHW:348581,369 population served2012
Pemberville WWTP and Sewer SystemHW:353391,365 population served2012
Arlington WWTP and SewersHW:347261,351 population served2012
Lynchburg WWTP and Sewer SystemHW:352401,350 population served2012
Williams Co Nettle Lake WWTPHW:349031,307 population served2012
Beverly WWTP and Sewer SystemHW:349951,282 population served2012
Lowellville WWTP and Sewer SystemHW:352351,281 population served2012
Gnadenhutten WWTP and Sewer SystemHW:351471,280 population served2012
Bremen WWTP and Sewer SystemHW:350011,265 population served2012
Portage Co Randolph WWTPHW:353671,250 population served2012
Hiram WWTP and Sewer SystemHW:353581,242 population served2012
Smithville WWTP and Sewer SystemHW:348281,232 population served2012
Wayne Co Kidron WWTP and SewersHW:348421,220 population served2012
Sardinia WWTP and Sewer SystemHW:353971,220 population served2012
Ashley WWTP and SewersHW:349141,216 population served2012
Botkins WWTP and Sewer SystemHW:348611,205 population served2012
Frazeysburg WWTP and Sewer SystemHW:351111,201 population served2012
Marion Co Grandview Estates SD 2AHW:348891,200 population served2012
Portage Co Atwater WWTPHW:353601,200 population served2012
Prospect WWTP and Sewer SystemHW:348861,191 population served2012
Continental WWTP and Sewer SystemHW:350601,188 population served2012
Pandora WWTP and Sewer SystemHW:353341,188 population served2012
Bradner WWTP and Sewer SystemHW:349991,171 population served2012
Bettsville WWTP and Sewer SystemHW:349931,167 population served2012
Payne WWTP and Sewer SystemHW:353371,166 population served2012
Liberty Center WWTP and Sewer SystemHW:352181,159 population served2012
Earnhart Hill Regional WSD WWTPHW:353461,149 population served2012
Holgate WWTP and Sewer SystemHW:351771,135 population served2012
Pleasant Hill WWTP and Sewer SystemHW:350231,134 population served2012
Rockford WWTP and Sewer SystemHW:349701,126 population served2012
Fayette Co Rattlesnake SD 1 WWTPHW:347851,115 population served2012
Convoy WWTP and Sewer SystemHW:350611,110 population served2012
Danville WWTP and Sewer SystemHW:349541,104 population served2012
New Vienna WWTP and Sewer SystemHW:348801,100 population served2012
NWWSD Tontogany Service Area SD 1200HW:355181,077 population served2012
Gallia Co Bidwell Porter WWTPHW:347561,072 population served2012
Aberdeen WWTP and SewersHW:347271,070 population served2012
Chauncey WWTP and Sewer SystemHW:350321,067 population served2012
Union Co Mill Creek Estates WWTPHW:354691,060 population served2012
Westfield Center WWTP and SewersHW:354941,054 population served2012
Portage Co Bolingbrook WWTPHW:353561,046 population served2012
Mantua WWTP and Collection SystemHW:353591,046 population served2012
Bloomville WWTP and SewersHW:349181,045 population served2012
Seaman WWTP and Sewer SystemHW:354051,039 population served2012
Kingston WWTP and Sewer SystemHW:351951,032 population served2012
Kalida WWTP and Sewer SystemHW:351911,031 population served2012
New Madison WWTP and SewersHW:348701,025 population served2012
Winchester WWTP and Sewer SystemHW:355141,025 population served2012
Beloit WWTP and Sewer SystemHW:349911,024 population served2012
Grand Rapids WWTP and Sewer SystemHW:351491,018 population served2012
NWWSD Cygnet WWTP and Sewer SystemHW:350671,017 population served2012
Rawson WWTP and Sewer SystemHW:349281,015 population served2012
Frankfort WWTP and Sewer SystemHW:351091,011 population served2012
Albany WWTP and Sewer SystemHW:347841,010 population served2012
Millersport WWTP and Sewer SystemHW:352791,010 population served2012
Williamsport WWTP and Sewer SystemHW:355091,002 population served2012
Washington Co Riverview Estates WWTP and SewersHW:347581,000 population served2012
Franklin Co Oakhurst Knolls WWTPHW:351101,000 population served2012
Warren Co Sycamore Trails WWTPHW:354801,000 population served2012
Apple Creek WWTP and SewersHW:34833999 population served2012
Luckey WWTP and Sewer SystemHW:35239998 population served2012
Clermont Co Arrowhead Park WWTPHW:35044994 population served2012
New Washington WWTP and SewersHW:34883987 population served2012
Hopedale WWTP and Sewer SystemHW:35178984 population served2012
Farmersville WWTP and Sewer SystemHW:35103980 population served2012
Newport WSD WWTP and Sewer SystemHW:34762975 population served2012
Bloomingburg WWTP and Sewer SystemHW:34732960 population served2012
Matamoras WWTP and Sewer SystemHW:35262957 population served2012
Mount Victory WWTP and Sewer SystemHW:34911955 population served2012
Dunkirk WWTP and Sewer SystemHW:35079952 population served2012
Wakeman WWTP and Sewer SystemHW:35477951 population served2012
Sycamore WWTP and Sewer SystemHW:34894950 population served2012
Clinton Co Martinsville Midland WWTPHW:34878940 population served2012
Gratis WWTP and Sewer SystemHW:35151934 population served2012
Flushing WWTP and Sewer SystemHW:35106923 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.