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National Drinking Water Database


Cadmium (total) in Montana


Cadmium is a metal used in the steel and plastic industries; it is released from corrosion of galvanized pipes, runoff from metal refineries, waste batteries and paints; contamination from fertilizers; and erosion of natural deposits. [read more]

The Most Polluted Communities in Montana

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

Ranked by highest average Cadmium (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Spring Tree Ridge
MT
751 of 61.67 ppb
(0 to 10 ppb)
2Anaconda Water Department
Anaconda, MT
6,5001 of 20.59 ppb
(0 to 1.18 ppb)
3Whispering Pines TR Ct
Superior, MT
451 of 20.5 ppb
(0 to 1 ppb)
4City of Glendive
Glendive, MT
4,8061 of 50.4 ppb
(0 to 2 ppb)
5Northern Pines Community Hoa
Big Fork, MT
2851 of 40.33 ppb
(0 to 1.33 ppb)
6Yellowstone Water and Sewer Dist
West Yellowstone, MT
901 of 20.15 ppb
(0 to 0.3 ppb)
7City of Dillon
Dillon, MT
4,0001 of 20.03 ppb
(0 to 0.06 ppb)
8Mountain Water Company
Missoula, MT
56,3351 of 150.02 ppb
(0 to 0.33 ppb)

Health Based Limits for Cadmium (total)

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.0.04 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.5 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.5 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.5 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.20 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.40 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.40 ppb

Violation Summary for Cadmium (total) in Montana

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

Violation TypeNumber of Violations
Failure to monitor regularly24