The Power of Information

National Drinking Water Database

Combined Radium (-226 & -228) in Wyoming

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

The Most Polluted Communities in Wyoming

65 water utilities reported detecting Combined Radium (-226 & -228) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Combined Radium (-226 & -228) level

RankSystem Population Served Positive test results of total reported tests Average Level
1Bennor Subdivision
Gillette, WY
1744 of 46.8 pCi/L
(6.8 pCi/L)
2Town of Hulett
Hulett, WY
4094 of 43.85 pCi/L
(3.5 to 4.2 pCi/L)
3Cook Road Water District
Gillette, WY
2564 of 43.4 pCi/L
(3.4 pCi/L)
4Warm Springs Water District
Dubois, WY
554 of 42.8 pCi/L
(1.6 to 3.5 pCi/L)
5Farson Mhc
Farson, WY
801 of 12.71 pCi/L
(2.71 pCi/L)
6Douglas Koa Campground/Pine Meadows Mhp
Douglas, WY
1504 of 42.45 pCi/L
(1 to 4.7 pCi/L)
7Town of Cowley
Cowley, WY
4854 of 42.43 pCi/L
(1.5 to 4.1 pCi/L)
8Southfork Estates
Gillette, WY
1384 of 42.1 pCi/L
(2.1 pCi/L)
9Cheyenne Board Pub Utilities
Cheyenne, WY
58,1824 of 42.06 pCi/L
(0.75 to 3.05 pCi/L)
10Cooper Sub Mobile Home Park
Cody, WY
1004 of 41.83 pCi/L
(1 to 4.3 pCi/L)

Health Based Limits for Combined Radium (-226 & -228)

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
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 Combined Radium (-226 & -228) in Wyoming

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average1