The Power of Information

National Drinking Water Database


Radium-228 in Iowa


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

The Most Polluted Communities in Iowa

299 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)
1Bayard Water Supply
Bayard, IA
53610 of 103.62 pCi/L
(1.65 to 5.5 pCi/L)
2Salix Water Supply
Salix, IA
3701 of 13.4 pCi/L
(3.4 pCi/L)
3Westfield Water Supply
Westfield, IA
1951 of 13 pCi/L
(3 pCi/L)
4Merrill Municipal Water Supply
Merrill, IA
7542 of 22.7 pCi/L
(1.8 to 3.6 pCi/L)
5Saint Olaf Water Supply
Farmersbur, IA
1362 of 22.65 pCi/L
(2.1 to 3.2 pCi/L)
6New Albin Water Supply
New Albin, IA
5272 of 22.65 pCi/L
(2.5 to 2.8 pCi/L)
7Wadena Water System
Wadena, IA
2431 of 12.6 pCi/L
(2.6 pCi/L)
8Conroy Water Supply
Conroy, IA
3206 of 62.57 pCi/L
(0.9 to 2.9 pCi/L)
9Shellsburg Water Supply
Shellsburg, IA
9383 of 32.47 pCi/L
(2.2 to 2.6 pCi/L)
10Rake Water Supply
Whittemore, IA
2271 of 12.4 pCi/L
(2.4 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 Iowa

There are no violations reported for this contaminant in Iowa