PFAS in Ohio tap water

59 of 347 tested systems measured above the federal limit. 142 had a detection of any kind.

Every public water system below was required by the EPA to test for 29 PFAS compounds. Sorted by the highest PFOA or PFOS reading, worst first. Find yours for the full set of readings and what removes them.

Water system	Highest PFOA	Highest PFOS	Found	Against the 4 ppt limit
Kings Island PWS	none detected	28.9 ppt	5 of 29	Above
Mcdonald Village PWS	none detected	21.2 ppt	4 of 29	Above
Girard City PWS	none detected	20.1 ppt	5 of 29	Above
Warren Comm W and S Assn 2	20 ppt	none detected	2 of 29	Above
Youngstown City PWS	none detected	19.3 ppt	2 of 29	Above
Putnam Community Water Association PWS	16.9 ppt	none detected	2 of 29	Above
Lordstown Village PWS	none detected	16 ppt	4 of 29	Above
Loveland City PWS	none detected	16 ppt	2 of 29	Above
Western Water Company	none detected	14.1 ppt	1 of 29	Above
Wright-patterson Afb Area B PWS	5.5 ppt	14 ppt	5 of 29	Above
Caldwell Village PWS	13 ppt	none detected	2 of 29	Above
Trumbull Co.-howland Twp PWS	4.4 ppt	13 ppt	6 of 29	Above
Canfield City PWS	4.2 ppt	12.4 ppt	4 of 29	Above
Indian Hill City PWS	none detected	12.4 ppt	5 of 29	Above
Dayton Va Bldg 410	none detected	10.5 ppt	4 of 29	Above
Clermont Public Water System	none detected	10.1 ppt	3 of 29	Above
Dayton Public Water System	none detected	10 ppt	5 of 29	Above
Guernsey Co. Water Dept.	9.8 ppt	none detected	1 of 29	Above
Montgomery County Water Services 1 PWS	none detected	9.6 ppt	5 of 29	Above
Yellow Springs Village PWS	none detected	9.2 ppt	1 of 29	Above
Trumbull Co.-southeast PWS	4 ppt	9.1 ppt	6 of 29	Above
Niles City PWS	none detected	9 ppt	3 of 29	Above
Jackson/milton Metro Water District PWS	4.9 ppt	8.5 ppt	6 of 29	Above
Barnesville, Oh	8.1 ppt	none detected	1 of 29	Above
Bethel Village PWS	7.9 ppt	none detected	1 of 29	Above
Milford City PWS	4.1 ppt	7.8 ppt	7 of 29	Above
Leading Creek Conservancy District	7.6 ppt	none detected	1 of 29	Above
Montgomery County Water Services 2 PWS	none detected	7.6 ppt	5 of 29	Above
Gallia Co Rural Water Association	7.5 ppt	none detected	1 of 29	Above
Tate-monroe Water Association PWS	7.4 ppt	none detected	1 of 29	Above
Akron City PWS	7.3 ppt	none detected	2 of 29	Above
Wilmington City PWS	none detected	7.3 ppt	6 of 29	Above
Gallipolis PWS	7.2 ppt	none detected	1 of 29	Above
Sanitary District #4	7.2 ppt	none detected	6 of 29	Above
Grandview Medical Center PWS	none detected	7.1 ppt	5 of 29	Above
Springboro PWS	6.9 ppt	5.7 ppt	4 of 29	Above
Hecla Water Association-plant PWS	6.8 ppt	none detected	5 of 29	Above
Newton Falls City	6.7 ppt	5.6 ppt	7 of 29	Above
St. Clairsville, City of PWS	6.4 ppt	none detected	1 of 29	Above
Greenville City PWS	none detected	6.3 ppt	2 of 29	Above
Cincinnati Public Water System	none detected	6.1 ppt	3 of 29	Above
Martins Ferry Public Water System	6.1 ppt	none detected	3 of 29	Above
Shadyside Public Water System	6 ppt	none detected	6 of 29	Above
Bellbrook Water Works	none detected	5.7 ppt	3 of 29	Above
Bexley City PWS	5.6 ppt	none detected	5 of 29	Above
Cambridge, City of	5.6 ppt	none detected	2 of 29	Above
Marietta City PWS	5.2 ppt	5.6 ppt	3 of 29	Above
Ironton PWS	5.5 ppt	none detected	4 of 29	Above
Portsmouth Public Water System	5.4 ppt	none detected	2 of 29	Above
Columbus Public Water System	5.3 ppt	none detected	6 of 29	Above
Hamilton Public Water System	5.3 ppt	none detected	3 of 29	Above
Wright-patterson Afb Area A PWS	none detected	5 ppt	7 of 29	Above
Union City PWS	4.8 ppt	none detected	5 of 29	Above
Wooster City PWS	4.8 ppt	none detected	6 of 29	Above
Georgetown Village PWS	4.7 ppt	none detected	1 of 29	Above
Middletown City PWS	none detected	4.3 ppt	1 of 29	Above
Aqua Ohio - Lawrence County	4.2 ppt	none detected	1 of 29	Above
Del-co Water Company, Inc.	4.2 ppt	none detected	5 of 29	Above
Franklin Public Water System	none detected	4.1 ppt	1 of 29	Above
Maysville Regional Water	4 ppt	none detected	1 of 29	Within
Ada Village	none detected	none detected	0 of 29	Within
Adams County Regional Wd PWS	none detected	none detected	0 of 29	Within
Alliance City PWS	none detected	none detected	1 of 29	Within
Amherst City PWS	none detected	none detected	0 of 29	Within
Andover-camplands Water	none detected	none detected	0 of 29	Within
Aqua Ohio - Ashtabula	none detected	none detected	0 of 29	Within
Aqua Ohio - Aurora E	none detected	none detected	0 of 29	Within
Aqua Ohio - Blacklick	none detected	none detected	0 of 29	Within
Aqua Ohio - Huber Ridge PWS	none detected	none detected	0 of 29	Within
Aqua Ohio - Lake Darby	none detected	none detected	0 of 29	Within
Aqua Ohio - Marion	none detected	none detected	0 of 29	Within
Aqua Ohio - Massillon PWS	none detected	none detected	2 of 29	Within
Aqua Ohio - Masury	none detected	none detected	1 of 29	Within
Aqua Ohio - Mentor	none detected	none detected	0 of 29	Within
Aqua Ohio - Preble County	none detected	none detected	0 of 29	Within
Aqua Ohio - Struthers	none detected	none detected	1 of 29	Within
Aqua Ohio - Tiffin	none detected	none detected	0 of 29	Within
Aqua Ohio - Village of Jefferson	none detected	none detected	0 of 29	Within
Archbold Village	none detected	none detected	0 of 29	Within
Ashland City	none detected	none detected	0 of 29	Within
Ashtabula County Water System	none detected	none detected	0 of 29	Within
Ashville Village PWS	none detected	none detected	0 of 29	Within
Athens PWS	none detected	none detected	0 of 29	Within
Aurora City - Cleveland PWS	none detected	none detected	0 of 29	Within
Avon City PWS	none detected	none detected	0 of 29	Within
Avon Lake City PWS	none detected	none detected	0 of 29	Within
Barberton City	none detected	none detected	0 of 29	Within
Bedford City PWS	none detected	none detected	0 of 29	Within
Bellaire Public Water System	none detected	none detected	1 of 29	Within
Bellefontaine City PWS	none detected	none detected	1 of 29	Within
Bellevue City	none detected	none detected	1 of 29	Within
Belmont Co. Sanitary District 3 PWS	none detected	none detected	0 of 29	Within
Belpre City PWS	none detected	none detected	2 of 29	Within
Berea City PWS	none detected	none detected	0 of 29	Within
Blanchester Village PWS	none detected	none detected	1 of 29	Within
Bluffton Village	none detected	none detected	4 of 29	Within
Bowling Green City	none detected	none detected	4 of 29	Within
Bradford Village PWS	none detected	none detected	0 of 29	Within
Brookville Municipality PWS	none detected	none detected	1 of 29	Within
Brown County Rural Water	none detected	none detected	0 of 29	Within
Bryan City	none detected	none detected	0 of 29	Within
Buckeye Water District - Ohio River	none detected	none detected	0 of 29	Within
Bucyrus City	none detected	none detected	0 of 29	Within
Butler Co. Water District 2 PWS	none detected	none detected	2 of 29	Within
Byesville	none detected	none detected	0 of 29	Within
Cadiz Village PWS	none detected	none detected	0 of 29	Within
Canal Fulton City PWS	none detected	none detected	0 of 29	Within
Canal Winchester City PWS	none detected	none detected	0 of 29	Within
Canton Public Water System	none detected	none detected	0 of 29	Within
Carey Village	none detected	none detected	0 of 29	Within
Cedarville University	none detected	none detected	0 of 29	Within
Celina City	none detected	none detected	1 of 29	Within
Chagrin Falls Village PWS	none detected	none detected	0 of 29	Within
Chardon City PWS	none detected	none detected	0 of 29	Within
Chillicothe City PWS	none detected	none detected	1 of 29	Within
Chillicothe Correctional Institution	none detected	none detected	0 of 29	Within
Cincinnati Childrens Hosp Ionization Sys	none detected	none detected	2 of 29	Within
Circleville City PWS	none detected	none detected	0 of 29	Within
City of Heath PWS	none detected	none detected	0 of 29	Within
Clark County Green Meadows 2 PWS	none detected	none detected	0 of 29	Within
Clark County Northridge PWS	none detected	none detected	0 of 29	Within
Clark County Park Layne PWS	none detected	none detected	0 of 29	Within
Cleveland Public Water System	none detected	none detected	0 of 29	Within
Cleves Village PWS	none detected	none detected	0 of 29	Within
Clyde City	none detected	none detected	1 of 29	Within
Coldwater Village	none detected	none detected	0 of 29	Within
Columbiana City PWS	none detected	none detected	0 of 29	Within
Columbus Grove Village	none detected	none detected	0 of 29	Within
Commercial Point Village	none detected	none detected	1 of 29	Within
Conneaut	none detected	none detected	0 of 29	Within
Cortland City PWS	none detected	none detected	0 of 29	Within
Coshocton PWS	none detected	none detected	0 of 29	Within
Crestline Village	none detected	none detected	0 of 29	Within
Cuyahoga Falls City PWS	none detected	none detected	0 of 29	Within
Defiance City	none detected	none detected	3 of 29	Within
Delaware City PWS	none detected	none detected	0 of 29	Within
Delphos City	none detected	none detected	0 of 29	Within
Delta Village	none detected	none detected	1 of 29	Within
Dover City PWS	none detected	none detected	0 of 29	Within
Earnhart Hill Water District PWS	none detected	none detected	0 of 29	Within
East Liverpool City	none detected	none detected	1 of 29	Within
East Palestine Village PWS	none detected	none detected	0 of 29	Within
Eaton Public Water System	none detected	none detected	0 of 29	Within
Elida Village	none detected	none detected	3 of 29	Within
Elyria Water Department	none detected	none detected	0 of 29	Within
Englewood City PWS	none detected	none detected	0 of 29	Within
Erie Co Margaretta District	none detected	none detected	0 of 29	Within
Erie Co Perkins District	none detected	none detected	0 of 29	Within
Fairborn Public Water System	none detected	none detected	0 of 29	Within
Fairfield City PWS	none detected	none detected	4 of 29	Within
Fairfield County Utilities PWS	none detected	none detected	0 of 29	Within
Felicity Village PWS	none detected	none detected	0 of 29	Within
Findlay City	none detected	none detected	0 of 29	Within
Fostoria City	none detected	none detected	0 of 29	Within
Fremont City	none detected	none detected	0 of 29	Within
Gahanna City PWS	none detected	none detected	0 of 29	Within
Galion City	none detected	none detected	1 of 29	Within
Gb Fabrication	none detected	none detected	0 of 29	Within
Geneva City PWS	none detected	none detected	0 of 29	Within
Germantown City PWS	none detected	none detected	0 of 29	Within
Gnadenhutten PWS	none detected	none detected	0 of 29	Within
Granville, Village of	none detected	none detected	0 of 29	Within
Greene Co.-northwest Reg Water	none detected	none detected	0 of 29	Within
Greene County Eastern Regional PWS	none detected	none detected	0 of 29	Within
Greenfield Twp Water District	none detected	none detected	0 of 29	Within
Greenfield Village PWS	none detected	none detected	0 of 29	Within
Groveport PWS	none detected	none detected	0 of 29	Within
Harrison City PWS	none detected	none detected	0 of 29	Within
Hicksville Village	none detected	none detected	0 of 29	Within
Highland County Water Company, Inc.	none detected	none detected	0 of 29	Within
Hillsboro City	none detected	none detected	0 of 29	Within
Hollywood Gaming @ Mvrc	none detected	none detected	0 of 29	Within
Honda - Anna Engine Plant	none detected	none detected	0 of 29	Within
Honda - Benton Rd. WTP	none detected	none detected	0 of 29	Within
Honda East Liberty WTP	none detected	none detected	0 of 29	Within
Hubbard City PWS	none detected	none detected	1 of 29	Within
Huber Heights Public Water System	none detected	none detected	0 of 29	Within
Hudson City PWS	none detected	none detected	0 of 29	Within
Huron City	none detected	none detected	0 of 29	Within
I-71 and Sr-35 PWS	none detected	none detected	0 of 29	Within
Jackson Co. Water Company-wtp	none detected	none detected	0 of 29	Within
Jackson, City of	none detected	none detected	1 of 29	Within
Jefferson Co W and S District - M	none detected	none detected	1 of 29	Within
Jefferson Co W and S District- A	none detected	none detected	2 of 29	Within
Jefferson Regional Water Authority	none detected	none detected	3 of 29	Within
Jefferson Water and Sewer District PWS	none detected	none detected	0 of 29	Within
Johnstown Village PWS	none detected	none detected	0 of 29	Within
Kent City PWS	none detected	none detected	0 of 29	Within
Kenton City	none detected	none detected	0 of 29	Within
Knox County Water and Wastewater PWS	none detected	none detected	0 of 29	Within
Lake County East Water Subdistrict	none detected	none detected	0 of 29	Within
Lake County West Water Subdistrict	none detected	none detected	0 of 29	Within
Lakewood City PWS	none detected	none detected	0 of 29	Within
Lancaster City PWS	none detected	none detected	0 of 29	Within
Le-ax Regional Water District PWS	none detected	none detected	0 of 29	Within
Lebanon City	none detected	none detected	1 of 29	Within
Lebanon Correctional Institution	none detected	none detected	0 of 29	Within
Lexington Village	none detected	none detected	0 of 29	Within
Lima City	none detected	none detected	3 of 29	Within
Little Hocking Water Association, Inc.	none detected	none detected	0 of 29	Within
Lockland Village PWS	none detected	none detected	0 of 29	Within
Logan, City of	none detected	none detected	0 of 29	Within
London City PWS	none detected	none detected	0 of 29	Within
Lorain City PWS	none detected	none detected	0 of 29	Within
Louisville City PWS	none detected	none detected	1 of 29	Within
Madison County Sswd Water District 1	none detected	none detected	0 of 29	Within
Malvern Village PWS	none detected	none detected	0 of 29	Within
Manchester High School	none detected	none detected	0 of 29	Within
Mansfield City	none detected	none detected	0 of 29	Within
Marysville City PWS	none detected	none detected	0 of 29	Within
Maumee City	none detected	none detected	0 of 29	Within
Medina City PWS	none detected	none detected	1 of 29	Within
Medina Co/northwest PWS	none detected	none detected	1 of 29	Within
Medina Co/southern Water Dist PWS	none detected	none detected	0 of 29	Within
Miami Co-camp Troy PWS	none detected	none detected	0 of 29	Within
Miamisburg City PWS	none detected	none detected	0 of 29	Within
Mid-ohio Wsd Plain City WTP	none detected	none detected	0 of 29	Within
Millersburg Village PWS	none detected	none detected	0 of 29	Within
Minerva Village PWS	none detected	none detected	0 of 29	Within
Monroe City Pws, Oh	none detected	none detected	0 of 29	Within
Monroe Water Systems	none detected	none detected	0 of 29	Within
Montpelier Village	none detected	none detected	0 of 29	Within
Mount Orab Village PWS	none detected	none detected	1 of 29	Within
Mount Vernon City PWS	none detected	none detected	0 of 29	Within
Mt Gilead Village PWS	none detected	none detected	0 of 29	Within
Munroe Falls City PWS	none detected	none detected	0 of 29	Within
Muskingum County Water - SE	none detected	none detected	1 of 29	Within
Napoleon City	none detected	none detected	3 of 29	Within
Nawa	none detected	none detected	0 of 29	Within
Nelsonville PWS	none detected	none detected	0 of 29	Within
New Bremen Village	none detected	none detected	0 of 29	Within
New Carlisle City PWS	none detected	none detected	1 of 29	Within
New Lebanon Village PWS	none detected	none detected	0 of 29	Within
New Lexington	none detected	none detected	0 of 29	Within
New Miami Village PWS	none detected	none detected	0 of 29	Within
New Philadelphia City PWS	none detected	none detected	0 of 29	Within
Newark City PWS	none detected	none detected	1 of 29	Within
Newcomerstown Village PWS	none detected	none detected	0 of 29	Within
North Baltimore Village	none detected	none detected	1 of 29	Within
North Canton City PWS	none detected	none detected	0 of 29	Within
North Ridgeville City PWS	none detected	none detected	0 of 29	Within
Northern Ohio Rural Water	none detected	none detected	0 of 29	Within
Northern Ohio Rural Water - NW District	none detected	none detected	0 of 29	Within
Northern Perry Co.water #2	none detected	none detected	0 of 29	Within
Northwest Regional Water District	none detected	none detected	1 of 29	Within
Northwestern W and Sd - Wtln 200	none detected	none detected	1 of 29	Within
Northwestern W and Sd -toledo Svce Area	none detected	none detected	0 of 29	Within
Northwestern W and Sd- Portage	none detected	none detected	3 of 29	Within
Norw - South District	none detected	none detected	1 of 29	Within
Norwalk City	none detected	none detected	1 of 29	Within
Norwood City PWS	none detected	none detected	0 of 29	Within
Oak Harbor Village	none detected	none detected	0 of 29	Within
Oakdale Water District	none detected	none detected	0 of 29	Within
Oakwood City PWS	none detected	none detected	4 of 29	Within
Oberlin Water Department	none detected	none detected	4 of 29	Within
Odrc-pickaway Correction PWS	none detected	none detected	0 of 29	Within
Old Trail School	none detected	none detected	0 of 29	Within
Ontario City	none detected	none detected	0 of 29	Within
Oregon City, Oh	none detected	none detected	1 of 29	Within
Orrville City PWS	none detected	none detected	0 of 29	Within
Ottawa County Regional Water District	none detected	none detected	3 of 29	Within
Ottawa Village	none detected	none detected	4 of 29	Within
Oxford City PWS	none detected	none detected	1 of 29	Within
Painesville City PWS	none detected	none detected	0 of 29	Within
Pataskala City	none detected	none detected	0 of 29	Within
Paulding Village	none detected	none detected	1 of 29	Within
Perrysburg City Water	none detected	none detected	0 of 29	Within
Pickerington City PWS	none detected	none detected	0 of 29	Within
Pike Water, Inc.-plant PWS	none detected	none detected	1 of 29	Within
Piqua City PWS	none detected	none detected	1 of 29	Within
Port Clinton City	none detected	none detected	0 of 29	Within
Portage County Water Resources	none detected	none detected	0 of 29	Within
Ravenna City PWS	none detected	none detected	1 of 29	Within
Reading City PWS	none detected	none detected	1 of 29	Within
Reynoldsburg City PWS	none detected	none detected	1 of 29	Within
Rittman City PWS	none detected	none detected	0 of 29	Within
Ross County Water Co Inc PWS	none detected	none detected	1 of 29	Within
Rural Lorain Co. Water A	none detected	none detected	2 of 29	Within
Salem City, Oh	none detected	none detected	0 of 29	Within
Sandusky City	none detected	none detected	0 of 29	Within
Scioto Co. Regional Water District #1	none detected	none detected	1 of 29	Within
Scioto Water, Inc.-rose Hill	none detected	none detected	0 of 29	Within
Scioto Water, Inc.-sugar Camp	none detected	none detected	1 of 29	Within
Scranton Woods	none detected	none detected	0 of 29	Within
Sebring Village PWS	none detected	none detected	0 of 29	Within
Sheffield Lake City PWS	none detected	none detected	0 of 29	Within
Sheffield Village PWS	none detected	none detected	0 of 29	Within
Shelby City	none detected	none detected	1 of 29	Within
Sidney City PWS	none detected	none detected	0 of 29	Within
South Lebanon Village PWS	none detected	none detected	0 of 29	Within
South Point Village	none detected	none detected	2 of 29	Within
Southern Perry Co-congo	none detected	none detected	0 of 29	Within
Southwest Licking Community Water	none detected	none detected	0 of 29	Within
Southwest Regional Water District	none detected	none detected	1 of 29	Within
Springfield City PWS	none detected	none detected	0 of 29	Within
St Marys City	none detected	none detected	0 of 29	Within
Stark County Water District	none detected	none detected	0 of 29	Within
Steubenville, City of	none detected	none detected	0 of 29	Within
Stow Public Water System	none detected	none detected	0 of 29	Within
Streetsboro City PWS	none detected	none detected	0 of 29	Within
Sunday Creek Valley Water PWS	none detected	none detected	0 of 29	Within
Swanton Village	none detected	none detected	0 of 29	Within
Sylvania City	none detected	none detected	0 of 29	Within
Tallmadge City PWS	none detected	none detected	0 of 29	Within
Tcmsd-wilkshire Hills PWS	none detected	none detected	0 of 29	Within
Timberlake Water System	none detected	none detected	0 of 29	Within
Timmons Elementary School	none detected	none detected	0 of 29	Within
Toledo, City of	none detected	none detected	1 of 29	Within
Toronto PWS	none detected	none detected	2 of 29	Within
Trenton City PWS	none detected	none detected	2 of 29	Within
Tri-county Block and Brick	none detected	none detected	0 of 29	Within
Trotwood City PWS	none detected	none detected	1 of 29	Within
Troy City Pws, Oh	none detected	none detected	0 of 29	Within
Trumbull Co. - Bazetta/champion	none detected	none detected	1 of 29	Within
Tupper Plains/chester Water District	none detected	none detected	0 of 29	Within
Twin City Water and Sewer District PWS	none detected	none detected	0 of 29	Within
University Hospitals - Main Campus	none detected	none detected	1 of 29	Within
Upper Sandusky City	none detected	none detected	0 of 29	Within
Urbana City PWS	none detected	none detected	1 of 29	Within
Van Wert City	none detected	none detected	0 of 29	Within
Vermilion City	none detected	none detected	0 of 29	Within
Wadsworth City PWS	none detected	none detected	0 of 29	Within
Wapakoneta City	none detected	none detected	0 of 29	Within
Warren City PWS	none detected	none detected	1 of 29	Within
Warren Co. Franklin Area PWS	none detected	none detected	0 of 29	Within
Warren Co. Richard Renneker PWS	none detected	none detected	0 of 29	Within
Warren Co. Socialville PWS	none detected	none detected	1 of 29	Within
Washington Court House PWS	none detected	none detected	0 of 29	Within
Waterford Water/sewer Association	none detected	none detected	1 of 29	Within
Waterville City	none detected	none detected	3 of 29	Within
Wauseon City	none detected	none detected	5 of 29	Within
Waverly City PWS	none detected	none detected	2 of 29	Within
Waynesville Village PWS	none detected	none detected	0 of 29	Within
Waynoka Regional Water and Sewer Dist	none detected	none detected	0 of 29	Within
Wellington Village PWS	none detected	none detected	0 of 29	Within
Wellston City PWS	none detected	none detected	3 of 29	Within
West Carrollton City PWS	none detected	none detected	0 of 29	Within
West Jefferson Village PWS	none detected	none detected	0 of 29	Within
West Milton Village PWS	none detected	none detected	0 of 29	Within
Westerville City PWS	none detected	none detected	1 of 29	Within
Whitehouse Village	none detected	none detected	1 of 29	Within
Willard City	none detected	none detected	0 of 29	Within
Wintersville Village PWS	none detected	none detected	1 of 29	Within
Wright State University	none detected	none detected	0 of 29	Within
Wyoming City PWS	none detected	none detected	0 of 29	Within
Xenia City PWS	none detected	none detected	0 of 29	Within
Zanesville PWS	none detected	none detected	2 of 29	Within

All 347 systems the EPA tested in Ohio, every one of them with its own page. Each was tested for 29 PFAS compounds.

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Source, the EPA’s fifth Unregulated Contaminant Monitoring Rule, final dataset published 2026-10-15. Original data →