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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
New Holland WWTP & Sewer SystemNew Holland0.145 MGD (million gallons per day)2022
Dunkirk WWTP & Sewer SystemDunkirk0.14 MGD (million gallons per day)2022
Ohio City WWTP & Sewer SystemOhio City0.135 MGD (million gallons per day)2022
West Farmington WWTP and collection systemWest Farmington0.13 MGD (million gallons per day)2022
Albany WWTP and Sewer SystemAlbany0.13 MGD (million gallons per day)2022
New Madison WWTP & SewersNew Madison0.13 MGD (million gallons per day)2022
Bloomville WWTP & SewersBloomville0.13 MGD (million gallons per day)2022
Bradner WWTP & Sewer SystemBradner0.13 MGD (million gallons per day)2022
Butler Co Alamo Heights WWTPHamilton0.13 MGD (million gallons per day)2022
Adena WWTP & Sewer SystemAdena0.128 MGD (million gallons per day)2022
Williams Co South Central SD and WWTPBryan0.127 MGD (million gallons per day)2022
Hamden WWTP and Sewer SystemHamden0.125 MGD (million gallons per day)2022
Rawson WWTP and Sewer SystemRawson0.125 MGD (million gallons per day)2022
Butler WWTP & Sewer SystemButler0.125 MGD (million gallons per day)2022
Hopedale WWTP & Sewer SystemHopedale0.125 MGD (million gallons per day)2022
Stoutsville WWTP and SewersStoutsville0.125 MGD (million gallons per day)2022
Waynesfield WWTP & Sewer SystemWaynesfield0.123 MGD (million gallons per day)2022
Osgood WWTP & SewersNew Weston0.122 MGD (million gallons per day)2022
Washingtonville WWTP & Sewer SystemWashingtonville0.12 MGD (million gallons per day)2022
Marshallville WWTP & Sewer SystemMarshallville0.12 MGD (million gallons per day)2022
McGuffey WWTP & Sewer SystemMc Guffey0.12 MGD (million gallons per day)2022
Clarksburg WWTP & Sewer SystemClarksburg0.12 MGD (million gallons per day)2022
Lorain Co Brentwood Lake WWTPGrafton0.12 MGD (million gallons per day)2022
Luckey WWTP & Sewer SystemLuckey0.12 MGD (million gallons per day)2022
McClure WWTP & Sewer SystemMc Clure0.12 MGD (million gallons per day)2022
Perrysville WWTP & Sewer SystemPerrysville0.12 MGD (million gallons per day)2022
Shiloh WWTP & Sewer SystemShiloh0.12 MGD (million gallons per day)2022
Summit Co Brentwood Estates WWTP#24Barberton0.12 MGD (million gallons per day)2022
Gratis WWTP & Sewer SystemGratis0.119 MGD (million gallons per day)2022
Fulton Co Pettisville WWTPPettisville0.116 MGD (million gallons per day)2022
Hamler WWTP & Sewer SystemHamler0.113 MGD (million gallons per day)2022
LaRue WWTP & Sewer SystemLa Rue0.11 MGD (million gallons per day)2022
Belmont Co Pennwood Estates WWTPSaint Clairsville0.11 MGD (million gallons per day)2022
Smithfield WWTP & Sewer SystemSmithfield0.11 MGD (million gallons per day)2022
Lowell WWTP & Sewer SystemLowell0.108 MGD (million gallons per day)2022
Williams Co Nettle Lake WWTPMontpelier0.105 MGD (million gallons per day)2022
Union Co Mill Creek Estates WWTPMarysville0.105 MGD (million gallons per day)2022
Waynoka Regional WWTP & SewersSardinia0.102 MGD (million gallons per day)2022
Baltic WWTP & Sewer SystemBaltic0.1 MGD (million gallons per day)2022
Jewett WWTP & Sewer SystemJewett0.1 MGD (million gallons per day)2022
Gallia Co Bidwell Porter WWTPBidwell0.1 MGD (million gallons per day)2022
Kirkersville WWTP & Sewer SystemKirkersville0.1 MGD (million gallons per day)2022
Amanda WWTP & Sewer SystemAmanda0.1 MGD (million gallons per day)2022
Columbiana Co Beaver Local WWTPLisbon0.1 MGD (million gallons per day)2022
Rushsylvania WWTP & Sewer SystemRushsylvania0.1 MGD (million gallons per day)2022
Logan Co Flatbranch SSD WWTPEast Liberty0.1 MGD (million gallons per day)2022
Marion Co Fountain Place SD #5AMarion0.1 MGD (million gallons per day)2022
Oakwood WWTP & Sewer SystemOakwood0.1 MGD (million gallons per day)2022
Beaverdam WWTP & Sewer SystemBeaverdam0.1 MGD (million gallons per day)2022
Coalton WWTP & Sewer SystemCoalton0.1 MGD (million gallons per day)2022
Eldorado WWTP & Sewer SystemEldorado0.1 MGD (million gallons per day)2022
Junction City WWTP & Sewer SystemJunction City0.1 MGD (million gallons per day)2022
Lafayette WWTP & Sewer SystemLafayette0.1 MGD (million gallons per day)2022
Mendon WWTP & Sewer SystemMendon0.1 MGD (million gallons per day)2022
Stark Co Molly Stark Hospital WWTPLouisville0.1 MGD (million gallons per day)2022
NWWSD Tontogany Service Area SD #1200Tontogany0.1 MGD (million gallons per day)2022
Guernsey Co Mental Health Center WWTPCambridge0.099 MGD (million gallons per day)2022
South Solon WWTPSolon0.098 MGD (million gallons per day)2022
Lucas WWTP & Sewer SystemLucas0.096 MGD (million gallons per day)2022
Highland Co Southwest WWTPMowrystown0.095 MGD (million gallons per day)2022
Chesterville WWTP & Sewer SystemChesterville0.095 MGD (million gallons per day)2022
New Straitsville WWTP & SewersNew Straitsville0.095 MGD (million gallons per day)2022
NWWSD Risingsun WWTP and Sewer SystemRisingsun0.095 MGD (million gallons per day)2022
Holmesville WWTP & SewersHolmesville0.095 MGD (million gallons per day)2022
Shawnee WWTP & Sewer SystemShawnee0.093 MGD (million gallons per day)2022
Wayne WWTP & Sewer SystemWayne0.092 MGD (million gallons per day)2022
Newport WSD WWTP & Sewer SystemNewport0.09 MGD (million gallons per day)2022
Russia WWTP & Sewer SystemRussia0.09 MGD (million gallons per day)2022
Clarksville WWTP & Sewer SystemClarksville0.09 MGD (million gallons per day)2022
Nevada WWTP & Sewer SystemNevada0.09 MGD (million gallons per day)2022
Mount Victory WWTP & Sewer SystemMount Victory0.09 MGD (million gallons per day)2022
NWWSD Cygnet WWTP & Sewer SystemCygnet0.09 MGD (million gallons per day)2022
Harrod WWTP & Sewer SystemHarrod0.09 MGD (million gallons per day)2022
Ostrander WWTP & Sewer SystemOstrander0.09 MGD (million gallons per day)2022
Spencer WWTP & Sewer SystemSpencer0.09 MGD (million gallons per day)2022
Stockport WWTP & Sewer SystemStockport0.09 MGD (million gallons per day)2022
Russellville WWTP & Sewer SystemRussellville0.085 MGD (million gallons per day)2022
New Vienna WWTP & Sewer SystemNew Vienna0.085 MGD (million gallons per day)2022
Verona WWTP and Sewer SystemVerona0.085 MGD (million gallons per day)2022
Delaware Co Scioto Hills WWTPPowell0.084 MGD (million gallons per day)2022
Alexandria WWTP and SewersAlexandria0.08 MGD (million gallons per day)2022
Mahoning Co Damascus WWTPDamascus0.08 MGD (million gallons per day)2022
Ashtabula Co Ashcraft WWTPKingsville0.08 MGD (million gallons per day)2022
West Mansfield WWTP & Sewer SystemWest Mansfield0.08 MGD (million gallons per day)2022
Seneca Co Bascom AreaFostoria0.08 MGD (million gallons per day)2022
Beallsville WWTP & Sewer SystemBeallsville0.08 MGD (million gallons per day)2022
Bloomdale WWTP & Sewer SystemBloomdale0.08 MGD (million gallons per day)2022
Geauga Co Russell Park WWTPChagrin Falls0.08 MGD (million gallons per day)2022
Lorain Co Cresthaven WWTPElyria0.08 MGD (million gallons per day)2022
Middle Point WWTP & Sewer SystemMiddle Point0.08 MGD (million gallons per day)2022
Perry Co Crown Wehrle Estates WWTPThornville0.08 MGD (million gallons per day)2022
Quaker City WWTP & Sewer SystemQuaker City0.08 MGD (million gallons per day)2022
Warren Co Sycamore Trails WWTPLebanon0.08 MGD (million gallons per day)2022
Stark Co Spring Valley Allotment WWTPCanal Fulton0.08 MGD (million gallons per day)2022
South Vienna WWTP & Sewer SystemSouth Vienna0.077 MGD (million gallons per day)2022
Caledonia WWTP & Sewer SystemCaledonia0.076 MGD (million gallons per day)2022
Republic WWTP & SewersRepublic0.075 MGD (million gallons per day)2022
Galena WWTP & Sewer SystemGalena0.075 MGD (million gallons per day)2022
Mercer Co West Jefferson WWTPCelina0.072 MGD (million gallons per day)2022
Coventry Estates WWTPCambridge0.07 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.