The Power of Information

National Drinking Water Database


Radium-226 in Missouri


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

The Most Polluted Communities in Missouri

638 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)
1Autumn Hills Mhp
St Peters, MO
50018 of 1811.18 pCi/L
(9.1 to 13.3 pCi/L)
2Tara Oaks Manor Association
St Paul, MO
351 of 19.5 pCi/L
(9.5 pCi/L)
3MC Donald Co Pwsd #3
Noel, MO
56018 of 188.35 pCi/L
(6.5 to 9.6 pCi/L)
4Charwood Estates
Troy, MO
1106 of 67.35 pCi/L
(3 to 9.7 pCi/L)
5Noel
Noel, MO
1,5801 of 17.26 pCi/L
(7.26 pCi/L)
6Bronaugh
Bronaugh, MO
21122 of 226.22 pCi/L
(5.2 to 6.8 pCi/L)
7Westlake Meadows Subdivision
MO
5516 of 165.93 pCi/L
(4.5 to 6.6 pCi/L)
8Pineville
Pineville, MO
80011 of 115.92 pCi/L
(5 to 8.4 pCi/L)
9Walnut Grove Mhp
Farmington, MO
13518 of 185.53 pCi/L
(2.8 to 6.9 pCi/L)
10Wycliff Meadows Subd
Pilot Knob, MO
1009 of 95.24 pCi/L
(4.5 to 6 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 Missouri

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

Violation TypeNumber of Violations
Failure to monitor regularly24