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National Drinking Water Database


Mercury (total inorganic) in Pennsylvania


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 Pennsylvania

9 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)
1Twin Maples Mhp
Lebanon, PA
2802 of 110.73 ppb
(0 to 4 ppb)
2Hilltop Acres Mhp
Manhiem, PA
981 of 10.44 ppb
(0.44 ppb)
3Newtown Artesian Water Co
Newtown, PA
30,0001 of 10.32 ppb
(0.32 ppb)
4Kipps Run Mobile Court
Barto, PA
231 of 10.3 ppb
(0.3 ppb)
5Pine Valley Mobile Home Court
Lemoyne, PA
4251 of 10.3 ppb
(0.3 ppb)
6Meadows Mobile Home Park
Export, PA
2501 of 10.3 ppb
(0.3 ppb)
7PA American Water Company
Reading, PA
44,0001 of 10.13 ppb
(0.13 ppb)
8Malvern Courts Inc
Frazer, PA
2501 of 10.1 ppb
(0.1 ppb)
9Beavertown Water Department
Beavertown, PA
9351 of 30.07 ppb
(0 to 0.2 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 Pennsylvania

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

Violation TypeNumber of Violations
Failure to monitor regularly53
Over maximum contaminant level, Average2