Tap WaterIndex

← All states

Tap water quality report

Ohio

Across Ohio's 1,048 community water suppliers, 0.3% exceed the EPA lead action level and 17.7% have detectable PFAS.

0.3%
exceed lead action level
(3/1044 suppliers)
17.7%
PFOA/PFOS detected
(56/316 suppliers)
1,048
water suppliers
Lead by supplier PFAS by supplier

Largest water suppliers

Lead is the LCR 90th-percentile result; a value above 0.015 mg/L exceeds the EPA action level. “—” means no lead sample is on file for that supplier.
SupplierCityPopulationLead (p90)
Cleveland Public Water System — 1,308,955 0.0000 mg/L
Columbus Public Water System Columbus 1,305,946 0.0012 mg/L
Cincinnati Public Water System Cincinnati 750,200 0.0021 mg/L
Toledo City of Toledo 360,000 0.0000 mg/L
Akron City Pws — 280,000 0.0027 mg/L
Montgomery County Water Services 1 Pws Kettering 150,207 0.0000 mg/L
Del-Co Water Company, Inc. Delaware 150,000 0.0008 mg/L
Dayton Public Water System Dayton 141,407 0.4700 mg/L
Clermont Public Water System Batavia 133,059 0.0021 mg/L
Youngstown City Pws Youngstown 130,530 0.0000 mg/L
Butler Co. Water District 2 Pws Hamilton 116,572 0.0000 mg/L
Canton Public Water System Canton 107,113 0.0080 mg/L
Aqua Ohio - Massillon Pws Massillon 95,636 0.0000 mg/L
Montgomery County Water Services 2 Pws Kettering 83,033 0.0000 mg/L
Lake County West Water Subdistrict Painesville 78,379 0.0000 mg/L
Aqua Ohio - Mentor Mentor 74,500 0.0000 mg/L
Rural Lorain Co. Water a Lagrange 73,125 0.0000 mg/L
Elyria Water Department Lorain 68,000 0.0000 mg/L
Lima City Lima 65,619 0.0000 mg/L
Lorain City Pws Lorain 64,152 0.0000 mg/L
Hamilton Public Water System — 62,447 0.0020 mg/L
Springfield City Pws Springfield 60,680 0.0000 mg/L
Findlay City Pws Findlay 54,040 0.0021 mg/L
Middletown City Pws Trenton 51,229 0.0011 mg/L
Cuyahoga Falls City Pws Cuyahoga Falls 51,114 0.0000 mg/L
Mansfield City Mansfield 51,000 0.0020 mg/L
Lakewood City Pws — 50,942 0.0017 mg/L
Newark City Pws Newark 49,934 0.0000 mg/L
Warren City Pws Warren 49,130 0.0037 mg/L
Aqua Ohio - Marion Marion 47,102 0.0037 mg/L
Fairfield City Pws Hamilton 44,907 0.0000 mg/L
Delaware City Pws Delaware 43,895 0.0000 mg/L
Huber Heights Public Water System Huber Heights 43,439 0.0000 mg/L
Southwest Regional Water District Hamilton 42,856 0.0013 mg/L
Lake County East Water Subdistrict Painesville 40,656 0.0000 mg/L
Portsmouth City Portsmouth 40,475 0.0014 mg/L
Lancaster City Pws Lancaster 40,400 0.0008 mg/L
Western Water Company Morrow 39,508 0.0013 mg/L
Westerville City Pws — 39,000 0.0015 mg/L
Reynoldsburg City Pws — 37,847 0.0021 mg/L
Stow Public Water System Stow 35,437 0.0000 mg/L
Ross County Water Co Inc Chillicothe 35,345 0.0018 mg/L
Hecla Water Association Ironton 34,942 0.0013 mg/L
Fairborn Public Water System — 34,620 0.0027 mg/L
Gahanna City Pws — 33,258 0.0005 mg/L
Athens Pws Athens 32,725 0.0000 mg/L
Aqua Ohio - Ashtabula Ashtabula 32,342 0.0031 mg/L
Brown County Rural Water Ripley 32,090 0.0007 mg/L
Painesville City Pws Mentor 31,728 0.0000 mg/L
Bowling Green City Bowling Green 31,578 0.0000 mg/L
Barberton City Norton 31,298 0.0056 mg/L
Nawa Tipp City 29,974 0.0032 mg/L
Kent City Pws Kent 29,662 0.0000 mg/L
North Ridgeville City Pws North Ridgeville 29,465 0.0000 mg/L
Zanesville Pws Zanesville 29,381 0.0009 mg/L
Xenia City Pws Xenia 29,000 0.0018 mg/L
Highland County Water Company, Inc. Hillsboro 28,421 0.0017 mg/L
Perrysburg City Pws — 27,000 0.0000 mg/L
Belmont Co. Sanitary District 3 Pws Barnesville 26,822 0.0000 mg/L
Wooster City Pws Wooster 26,618 0.0021 mg/L
Troy City Pws — 26,305 0.0005 mg/L
Medina City Pws Medina 25,956 0.0030 mg/L
Sandusky City Sandusky 25,793 0.0050 mg/L
Marysville City Pws Marysville 25,571 0.0008 mg/L
North Canton City Pws N Canton 24,747 0.0000 mg/L
Wadsworth City Pws Wadsworth 24,356 0.0000 mg/L
Tate-Monroe Water Association Pws New Richmond 24,092 0.0000 mg/L
Oxford City Pws Somerville 24,000 0.0024 mg/L
Avon City Pws Avon 23,800 0.0000 mg/L
Avon Lake City Pws Avon Lake 23,659 0.0000 mg/L
Alliance City Pws Alliance 22,232 0.0019 mg/L
Niles City Pws Niles 21,961 0.0008 mg/L
Adams County Regional Wd Pws West Union 21,810 0.0018 mg/L
Chillicothe City Pws Chillicothe 21,725 0.0000 mg/L
Sylvania City Sylvania 21,618 0.0000 mg/L
Gallia Co Rural Water Association Gallipolis 20,995 0.0018 mg/L
Lebanon City — 20,700 0.0012 mg/L
Ashland City Ashland 20,648 0.0000 mg/L
Sidney City Pws Sidney 20,614 0.0000 mg/L
Ottawa County Regional Water District Port Clinton 20,428 0.0000 mg/L
Piqua City Pws Piqua 20,354 0.0000 mg/L
Aqua Ohio - Tiffin — 20,279 0.0054 mg/L
Oregon City Oregon 19,950 0.0000 mg/L
Norwood City Pws Norwood 19,870 0.0017 mg/L
Miamisburg City Pws Miamisburg 19,790 0.0019 mg/L
Northwestern W and Sd - Toledo Svc Area Bowling Green 19,758 0.0000 mg/L
Le-Ax Regional Water District Pws Athens 19,311 0.0025 mg/L
Springboro Pws Springboro 19,263 0.0044 mg/L
Pickerington City Pws Pickerington 19,141 0.0006 mg/L
Berea City Pws Berea 18,789 0.0000 mg/L
Marietta City Pws Marietta 18,707 0.0006 mg/L
Tallmadge City Pws Tallmadge 18,394 0.0000 mg/L
Fremont City Fremont 18,319 0.0000 mg/L
Northern Ohio Rural Water Norwalk 18,224 0.0040 mg/L
Licking Regional Water District — 17,818 0.0000 mg/L
Norwalk City Pws Norwalk 17,466 0.0000 mg/L
New Philadelphia City Pws New Philadelphia 17,410 0.0014 mg/L
Erie Co Perkins District Huron 17,241 0.0021 mg/L
Steubenville, City of Steubenville 17,000 0.0021 mg/L
Mount Vernon City Pws Mount Vernon 16,990 0.0000 mg/L