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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
NEORSD Southerly WWTPHW:35050607,312 population served2012
Columbus Southerly WWTP and SewersHW:35057552,865 population served2012
Columbus Jackson Pike WWTP and SewersHW:35056487,474 population served2012
MSD Mill Creek Drainage BasinHW:35164428,050 population served2012
Akron WWTP and SewersHW:34777358,376 population served2012
Toledo Bay View Park WWTP and SewersHW:35451329,989 population served2012
NEORSD Easterly WWTPHW:35049322,387 population served2012
Dayton WWTP and Sewer SystemHW:35069278,226 population served2012
Canton WWTP and Sewer SystemHW:35022186,357 population served2012
Youngstown WWTP and Sewer SystemHW:35526148,118 population served2012
MSD Little Miami Drainage BasinHW:35163132,088 population served2012
NEORSD Westerly WWTPHW:35051122,497 population served2012
Warren Co Lower Little Miami WWTPHW:35479110,000 population served2012
Sewer District 500 LiverpoolHW:3526793,398 population served2012
Euclid WWTP and Sewer SystemHW:3510093,059 population served2012
Massillon WWTP and Sewer SystemHW:3526192,325 population served2012
Gary L Kron WRF and Sewer SystemHW:3520190,775 population served2012
Montgomery Co Western Regional WWTP and SewersHW:3528586,372 population served2012
Springfield WWTP and Sewer SystemHW:3542485,000 population served2012
Lucas Co Maumee River WWTPHW:3523882,649 population served2012
Rocky River WWTP and Sewer SystemHW:3538480,919 population served2012
Delaware Co Alum Creek WWTPHW:3478274,000 population served2012
Butler Co Upper Mill Creek WWTPHW:3501172,774 population served2012
Lorain Black River WWTPHW:3522667,371 population served2012
Butler Co LeSourdsville WWTPHW:3500963,640 population served2012
Warren WWTP and Sewer SystemHW:3548262,887 population served2012
Tri Cities North Regional WWTPHW:3502562,808 population served2012
Hamilton WRF and Sewer SystemHW:3516161,171 population served2012
Middletown WWTP and Sewer SystemHW:3527560,000 population served2012
Lakewood WWTP and Sewer SystemHW:3520757,096 population served2012
Elyria WWTP and Sewer SystemHW:3509457,000 population served2012
Mansfield WWTP and Sewer SystemHW:3525456,903 population served2012
Clermont Co Lower East Fork WWTPHW:3504255,791 population served2012
Ottawa Co Danbury Township WWTPHW:3524655,000 population served2012
Ashtabula WWTP and Sewer SystemHW:3491653,462 population served2012
Lancaster Lawrence St WWTPHW:3520851,203 population served2012
Zanesville WWTP and Sewer SystemHW:3552751,100 population served2012
Lima WWTP and Sewer SystemHW:3522047,839 population served2012
Newark WWTP and Sewer SystemHW:3529346,279 population served2012
Montgomery Co Eastern Regional WWTP and SewersHW:3528445,375 population served2012
North Olmsted WWTP and Sewer SystemHW:3531945,101 population served2012
Fairfield WWTP and Sewer SystemHW:3510245,000 population served2012
Ottawa Co Portage_Catawba WWTPHW:3480644,374 population served2012
Struthers WWTP and Sewer SystemHW:3543244,256 population served2012
Findlay WWTP and Sewer SystemHW:3510542,498 population served2012
Greene Co Sugarcreek WWTP and SewersHW:3515342,458 population served2012
Willoughby Eastlake WWTP and SewersHW:3551042,099 population served2012
Sandusky WWTP and Sewer SystemHW:3539442,085 population served2012
Delaware Co Olentangy ECCHW:3507141,000 population served2012
Greene Co Beavercreek WWTP and SewersHW:3515238,000 population served2012
Delaware WWTP and Sewer SystemHW:3507237,066 population served2012
Marion WWTP and Sewer SystemHW:3525835,660 population served2012
North Ridgeville French Creek WWTPHW:3511434,499 population served2012
Fairborn WWTP and Sewer SystemHW:3510132,052 population served2012
Summit Co Upper Tuscarawas WWTP 36HW:3543932,000 population served2012
Bowling Green WWTP and Sewer SystemHW:3553630,208 population served2012
Barberton WWTP and Sewer SystemHW:3497630,173 population served2012
Oregon WWTP and Sewer SystemHW:3532729,410 population served2012
North Royalton WW District AHW:3532028,250 population served2012
Kent WWTP and Sewer SystemHW:3519227,946 population served2012
Troy WWTP and Sewer SystemHW:3545327,220 population served2012
Wooster WWTP and Sewer SystemHW:3552127,069 population served2012
Niles WWTP and Sewer SystemHW:3531627,013 population served2012
MSD Taylor Creek Drainage BasinHW:3516726,767 population served2012
Clermont Co Middle East Fork WWTPHW:3503926,489 population served2012
MSD Polk Run Drainage BasinHW:3523326,404 population served2012
Alliance WWTP and SewersHW:3480326,253 population served2012
Sewer District 300 HinckleyHW:3526626,114 population served2012
Avon Lake WPCF and SewersHW:3497425,645 population served2012
Solon Central WWTP and Sewer SystemHW:3541525,600 population served2012
Fremont WPCC and Sewer SystemHW:3511325,395 population served2012
Portsmouth Lawson Run WWTP and SewersHW:3536925,292 population served2012
MSD Sycamore Creek Drainage BasinHW:3516625,223 population served2012
Clark Co Southwest Regional WWTPHW:3503623,414 population served2012
Mahoning Co Boardman WWTPHW:3524823,000 population served2012
Lebanon Regional WWTP and SewersHW:3521222,492 population served2012
Franklin Regional WWTPHW:3502422,175 population served2012
Mason WWTP and Sewer SystemHW:3526022,016 population served2012
Oxford WWTP and Sewer SystemHW:3533221,943 population served2012
Chillicothe WWTP and Sewer SystemHW:3503321,796 population served2012
Sidney WWTP and Sewer SystemHW:3541321,744 population served2012
Piqua WWTP and Sewer SystemHW:3535021,373 population served2012
Athens WWTP and Sewer SystemHW:3493121,342 population served2012
Ashland WWTP and Sewer SystemHW:3490821,249 population served2012
MSD Muddy Creek Drainage BasinHW:3516521,148 population served2012
Perrysburg WWTP and Sewer SystemHW:3534121,100 population served2012
Wadsworth WWTP and Sewer SystemHW:3547620,817 population served2012
Twinsburg WWTP and Sewer SystemHW:3546420,600 population served2012
Miamisburg WWTP and Sewer SystemHW:3527220,181 population served2012
Girard WWTP and Sewer SystemHW:3514519,932 population served2012
Bedford Heights WWTP and Sewer SystemHW:3498419,892 population served2012
Geauga Co McFarland Creek WWTPHW:3513319,740 population served2012
Marietta WWTP and Sewer SystemHW:3525719,452 population served2012
Cambridge WWTP and Sewer SystemHW:3501719,399 population served2012
Marysville WRF and Sewer SystemHW:3525919,282 population served2012
Steubenville WWTP and Sewer SystemHW:3542519,015 population served2012
Ravenna WWTP and Sewer SystemHW:3537518,771 population served2012
Mahoning Co Meander Creek WWTPHW:3481118,500 population served2012
Defiance WWTP and Sewer SystemHW:3507018,274 population served2012
Port Clinton WWTP and Sewer SystemHW:3536818,080 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.