The Power of Information

National Drinking Water Database


Radium-228 in Montana


Radium-228 is a radioactive element usually found around uranium deposits. [read more]

The Most Polluted Communities in Montana

49 water utilities reported detecting Radium-228 in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Radium-228 level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Hot Springs Municipal Water
Hot Springs, MT
5552 of 34.23 pCi/L
(0 to 7.1 pCi/L)
2Town of Chester
Chester, MT
9501 of 12.2 pCi/L
(2.2 pCi/L)
3Eagle Ridge Estates Co W and S Dist
MT
402 of 22 pCi/L
(2 pCi/L)
4Mountain View Trailer Court
Missoula, MT
421 of 11.9 pCi/L
(1.9 pCi/L)
5Bahny Brae Subdivision
East Helena, MT
351 of 11.9 pCi/L
(1.9 pCi/L)
6Town of Nashua
Nashua, MT
3251 of 11.7 pCi/L
(1.7 pCi/L)
7Sherwood Water Station
Columbus, MT
251 of 11.6 pCi/L
(1.6 pCi/L)
8City of Chinook
Chinook, MT
1,3001 of 11.3 pCi/L
(1.3 pCi/L)
9Red Cliff Estates Hoa
MT
361 of 11.2 pCi/L
(1.2 pCi/L)
10Jefferson Tracts Assoc Inc
Clancy, MT
801 of 11.1 pCi/L
(1.1 pCi/L)

Health Based Limits for Radium-228

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.0.02 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-228 in Montana

There are no violations reported for this contaminant in Montana