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EWG's Tap Water Database

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Ohio

  • 1,209 Utilities

  • Serving: 10,192,000

  • Data available: 2010-2015

  • Contaminants Found: 86

 

EWG's drinking water quality report for Ohio shows results of tests conducted by the water utilities in Ohio and provided to EWG by the Ohio Environmental Protection Agency - Division of Drinking and Ground Waters.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Ohio serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Ohio

UtilityLocationPeople
Served
Adams County Regional WD PWSWest Union, OH19,194
Akron City Public Water SystemKent, OH280,000
Alliance City PWSAlliance, OH22,232
Amherst City PWSAmherst, OH11,797
Aqua Ohio - AshtabulaMentor, OH39,838
Aqua Ohio - City of MassillonMassillon, OH90,000
Aqua Ohio - MarionMarion, OH41,925
Aqua Ohio - StruthersStruthers, OH47,000
Aqua Ohio - TiffinTiffin, OH17,963
Aqua Ohio Inc. - MentorMentor, OH83,000
Ashland CityAshland, OH20,648
Ashtabula County Water SystemJefferson, OH14,200
Athens PWSAthens, OH24,024
Aurora City - Cleveland PWSAurora, OH15,852
Avon City PWSAvon, OH23,000
Avon Lake City PWSAvon Lake, OH22,998
Barberton CityNorton, OH29,550
Bedford City PWSBedford, OH13,074
Bellefontaine City PWSBellefontaine, OH13,370
Belmont County Sanitary District 3 PWSBellaire, OH24,387
Berea City PWSBerea, OH17,900
Bexley City PWSBexley, OH13,650
Bowling Green CityBowling Green, OH31,216
Brown County Rural WaterRipley, OH22,818
Buckeye Water District - Ohio RiverWellsville, OH10,300
Bucyrus CityBucyrus, OH12,362
Butler County Water District 2 Public Water SystemHamilton, OH109,988
Canton Public Water SystemCanton, OH98,260
Celina CityCelina, OH11,682
Chillicothe City PWSChillicothe, OH21,899
More

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Ohio

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Maysville Regional WaterWhite Cottage, OH6,54087
Henry County Regional Water & Sewer District - Co. Rd. PNapoleon, OH5451
Ayersville Water and Sewer DistrictDefiance, OH1,61046
Brunersburg Water District - EvansportDefiance, OH26846
Arcadia Village WaterArcadia, OH59435
West Farmington Village Public Water SystemWest Farmington, OH77531
Brunersburg Water District - AirportDefiance, OH4030
Defiance CityDefiance, OH16,49427
Put-in-bay VillagePut-in-bay, OH70015
Laura Village Public Water SystemLaura, OH48713
Seasons Rehab and Care CenterStow, OH7812
ByesvilleByesville, OH4,61512
Winona Water SupplyWinona, OH10011
Metzenbaum ResidenceChesterland, OH2510
Toronto Public Water SystemToronto, OH5,09110
Cadiz Village Public Water SystemCadiz, OH3,35310
South Solon Village Public Water SystemSouth Solon, OH3957
Westview Mobile Home ParkDoylestown, OH3006
Hamler VillageHamler, OH5756
Willshire VillageWillshire, OH4206
Catalpa Grove Mobile Home ParkSpringfield, OH276
Columbus Grove VillageColumbus Grove, OH2,1376
Northern Perry County water #1New Lexington, OH1,9466
St. Luke Lutheran Community - Portage LaAkron, OH1435
Athens County Buchtel WaterAthens, OH8405
Jewett VillageJewett, OH6505
Apple Creek Village Public Water SystemApple Creek, OH1,1005
Mansfield CityMansfield, OH51,0005
Pineview Estates Mobile Home ParkWest Carrollton, OH4005
Batavia Village Public Water SystemBatavia, OH1,5095

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Ohio

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Defiance CityDefiance, OH16,49427
Mansfield CityMansfield, OH51,0005
City of SteubenvilleSteubenville, OH19,9413
Middletown City PWSMiddletown, OH48,6942
City of LorainLorain, OH64,1521
Adams County Regional WD PWSWest Union, OH19,1941
Lima CityLima, OH65,6191
Cleveland Public Water SystemCleveland, OH1,262,9551
NAWATipp City, OH24,7661
Vermilion CityVermiliion, OH10,5941
Xenia City PWSXenia, OH26,0001
Muskingum County Water and SewerZanesville, OH10,7881
Ashtabula County Water SystemJefferson, OH14,2001

Contaminants found in Ohio above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
98410,025,6491,05210,067,774

Bromodichloromethane
98010,024,34898010,024,348

Dibromochloromethane
97510,023,69597610,024,845

Chloroform
9699,956,58198610,011,787

Dichloroacetic acid
7589,532,1077999,686,207

Nitrate
6048,489,0666518,800,834

Chromium (hexavalent)
2937,923,9233378,621,894

Trichloroacetic acid
5927,723,9976138,837,715

Nitrate and nitrite
4136,852,0694497,063,854

Bromoform
6225,976,5867338,646,252

Radium-228
3763,534,6493783,569,661

1,4-Dioxane
11961,0351353,649,526

Chlorate
46823,9252106,726,310

Atrazine
66683,337902,459,377

Perfluorooctane sulfonate (PFOS)
8391,4318391,431

Simazine
9204,406812,406,204

Radium-226
55203,54262218,915

Strontium
14195,0473959,173,564

Arsenic
72161,00572161,005

Chlorite
11101,45112131,001

Perfluorooctanoic acid (PFOA)
484,927484,927

Tetrachloroethylene (perchloroethylene)
1361,8171488,436

Trichloroethylene
319,496626,229

Perfluorohexane sulfonate (PFHXS)
116,551116,551

Perfluoroheptanoic acid (PFHPA)
116,551116,551

Molybdenum
316,2893638,528,582

Bromate
111,682111,682

Barium
73,6313774,677,041

Manganese
52,9451320,850

Thallium
14811481

Chloromethane
31652175,403

Mercury (inorganic)
1145310,229

1,2,3-Trichloropropane
11251125

Contaminants found in Ohio above legal limits

Contaminant# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
1023,777

Haloacetic acids (HAA5)
1970

Arsenic
3340