The Power of Information

National Drinking Water Database

Combined Radium (-226 & -228) in Missouri

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

The Most Polluted Communities in Missouri

257 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
1Wycliff Meadows Subd
Pilot Knob, MO
1001 of 112.3 pCi/L
(12.3 pCi/L)
2Autumn Hills Mhp
St Peters, MO
5004 of 411.68 pCi/L
(11.1 to 13.3 pCi/L)
Farmington, MO
11,2244 of 411.49 pCi/L
(10.22 to 13.23 pCi/L)
4Walnut Grove Mhp
Farmington, MO
1354 of 410.65 pCi/L
(9.7 to 12.4 pCi/L)
5MC Donald Co Pwsd #3
Noel, MO
5605 of 59.82 pCi/L
(8 to 11.1 pCi/L)
6Hunters Ridge Subd
Farmington, MO
2373 of 39.17 pCi/L
(8.4 to 9.6 pCi/L)
7Westlake Meadows Subdivision
555 of 58.42 pCi/L
(7.6 to 9.6 pCi/L)
8Cedar Ridge Estates
Troy, MO
304 of 47.98 pCi/L
(7.3 to 9.2 pCi/L)
Noel, MO
1,5801 of 17.8 pCi/L
(7.8 pCi/L)
Bronaugh, MO
2115 of 57.5 pCi/L
(6 to 8.7 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 Missouri

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average305
Failure to monitor regularly102