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National Drinking Water Database


Manganese in Ohio


Manganese is a naturally occurring element released from mineral deposits as well as industrial use.

The Most Polluted Communities in Ohio

65 water utilities reported detecting Manganese in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Manganese level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Columbiana, City of Pws
Columbiana, OH
5,6351 of 1470 ppb
(470 ppb)
2Mohawk Utilities Public Water System
Malvern, OH
2,4711 of 1398 ppb
(398 ppb)
3City of North Canton
North Canton, OH
18,2312 of 2380 ppb
(160 to 600 ppb)
4Hecla Water Association-Plant Pws
Ironton, OH
23,8281 of 1362 ppb
(362 ppb)
5Village of Bowerston
Bowerston, OH
5403 of 3323 ppb
(140 to 488 ppb)
6Oak Park Mobile Home Park
Doylestown, OH
4502 of 2315 ppb
(270 to 360 ppb)
7Ohio-American Water Co-Beechcrest Pws
Kent, OH
1,3752 of 2298 ppb
(39 to 557 ppb)
8Tate-Monroe Water Assoc.
Bethel, OH
25,3681 of 1294 ppb
(294 ppb)
9Oawc- Lake White District Public Water System
Marion, OH
1,1001 of 1285 ppb
(285 ppb)
10City of Fairfield
Fairfield, OH
42,0971 of 1279.11 ppb
(279.11 ppb)

Health Based Limits for Manganese

StandardDescriptionLevel
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.50 ppb
National Secondary Drinking Water RegulationsA National Secondary Drinking Water Regulation is a non-enforceable guideline regarding contaminants that may cause cosmetic effects (such as taste, odor, or color). Some states choose to adopt them as enforceable standards. Source: U.S. Environmental Protection Agency. 50 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.300 ppb
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.300 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.1000 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.1000 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.1600 ppb

Violation Summary for Manganese in Ohio

There are no violations reported for this contaminant in Ohio