The Power of Information

National Drinking Water Database


Radium-226 in Montana


Radium-226 is a radioactive element usually found around uranium deposits. [read more]

The Most Polluted Communities in Montana

41 water utilities reported detecting Radium-226 in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Radium-226 level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Sand Coulee Water Users Assn
Sand Coulee, MT
1614 of 43.3 pCi/L
(3 to 3.4 pCi/L)
2Gore Hill County Water Dist
Great Falls, MT
5001 of 12.5 pCi/L
(2.5 pCi/L)
3Spanish Peaks Resort Pws
MT
355 of 52.21 pCi/L
(1.7 to 2.7 pCi/L)
4Spring Tree Ridge
MT
753 of 42.2 pCi/L
(0 to 3.8 pCi/L)
5Town of Grass Range
Grass Range, MT
1001 of 11.75 pCi/L
(1.75 pCi/L)
6Turner Colony
Turner, MT
552 of 21.3 pCi/L
(1.3 pCi/L)
7Hot Springs Municipal Water
Hot Springs, MT
5553 of 31.23 pCi/L
(0.7 to 1.5 pCi/L)
8Lower Pioneer Mountain Water System
MT
654 of 41.18 pCi/L
(0.7 to 1.7 pCi/L)
9Hungry Horse Co Water and Sewer District
Coram, MT
9501 of 30.83 pCi/L
(0 to 2.5 pCi/L)
10Ridgeview Water Users Assoc
Kalispell, MT
352 of 30.8 pCi/L
(0 to 1.2 pCi/L)

Health Based Limits for Radium-226

StandardDescriptionLevel
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.0 pCi/L
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.0.05 pCi/L
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 pCi/L
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 pCi/L

Violation Summary for Radium-226 in Montana

There are no violations reported for this contaminant in Montana