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National Drinking Water Database


Mercury (total inorganic) in Indiana


Mercury is a metal from refinery and factory pollution, coal burning, landfill and agricultural runoff and erosion of natural deposits. [read more]

The Most Polluted Communities in Indiana

62 water utilities reported detecting Mercury (total inorganic) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Mercury (total inorganic) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Southern Madison Utilities, Llc.
Lapel, IN
1,6661 of 20.85 ppb
(0 to 1.7 ppb)
2Sunman Water Works
Sunman, IN
1,0151 of 10.5 ppb
(0.5 ppb)
3Mitchell Water Department
Mitchell, IN
4,8003 of 60.32 ppb
(0 to 1 ppb)
4Woodland Village Mobile Home Park
Shelbyville, IN
801 of 10.3 ppb
(0.3 ppb)
5Tri-Township Water Corporation
Lawrenceburg, IN
9,1801 of 30.27 ppb
(0 to 0.8 ppb)
6Cedar Creek Mobile Home Park
Peru, IN
1501 of 10.2 ppb
(0.2 ppb)
7Salt Creek Services, Inc.
Bloomington, IN
902 of 50.2 ppb
(0 to 0.9 ppb)
8Colfax Water Company
Colfax, IN
8781 of 20.17 ppb
(0 to 0.34 ppb)
9Rising Sun Utilities
Rising Sun, IN
2,4001 of 20.15 ppb
(0 to 0.3 ppb)
10Frankfort Water Works
Frankfort, IN
15,7031 of 20.15 ppb
(0 to 0.3 ppb)

Health Based Limits for Mercury (total inorganic)

StandardDescriptionLevel
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.1.2 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.2 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.2 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.2 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.2 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.2 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.10 ppb

Violation Summary for Mercury (total inorganic) in Indiana

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Indiana since 2004

Violation TypeNumber of Violations
Failure to monitor regularly45
Over maximum contaminant level, Average2