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National Drinking Water Database


Cadmium (total) in Idaho


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 Idaho

12 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)
1Elk Bend Unit 1
Salmon, ID
1001 of 11.1 ppb
(1.1 ppb)
2Cottonwood Acres 3 & 5
Idaho Falls, ID
601 of 20.9 ppb
(0 to 1.8 ppb)
3Mountain View Estates
Pinehurst, ID
251 of 10.6 ppb
(0.6 ppb)
4Trow Creek Water Assn
Bonners Ferry, ID
1201 of 10.4 ppb
(0.4 ppb)
5Elder Subd
Nampa, ID
851 of 20.3 ppb
(0 to 0.6 ppb)
6Brian Water Corp
Boise, ID
1401 of 20.25 ppb
(0 to 0.5 ppb)
7Wilderness Ranch Owners Association Inc
Boise, ID
5251 of 50.2 ppb
(0 to 1 ppb)
8Garden City Water and Sewer System
Boise, ID
12,5001 of 20.13 ppb
(0 to 0.25 ppb)
9Terrace Lakes Resort
Garden Valley, ID
3301 of 50.12 ppb
(0 to 0.6 ppb)
10Meridian Water Dept
Meridian, ID
46,5002 of 90.09 ppb
(0 to 0.7 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 Idaho

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

Violation TypeNumber of Violations
Failure to monitor regularly8