The Power of Information

National Drinking Water Database


Radium-226 in Wisconsin


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

The Most Polluted Communities in Wisconsin

211 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)
1Franklin Water Utility
Franklin, WI
22,5001 of 14.9 pCi/L
(4.9 pCi/L)
2Geneva National Golf Club
Lake Geneva, WI
1,25010 of 104.46 pCi/L
(0.16 to 13.4 pCi/L)
3Holland TN Sanitary Dist
Town Of Holland, WI
4504 of 44.1 pCi/L
(2.4 to 6.2 pCi/L)
4Hidden Meadows Wells 2 & 4
Watertown, WI
2522 of 23.9 pCi/L
(3.6 to 4.2 pCi/L)
5Reeseville Waterworks
Reeseville, WI
7074 of 43.83 pCi/L
(3.2 to 4.5 pCi/L)
6Brookfield Hills Apartments
Brookfield, WI
7001 of 13.8 pCi/L
(3.8 pCi/L)
7Interlaken Resort and Village
Lake Geneva, WI
50010 of 103.67 pCi/L
(0.84 to 7.1 pCi/L)
8Town of Bristol Waterworks
Bristol, WI
5984 of 43.58 pCi/L
(0.3 to 4.8 pCi/L)
9Burlington Waterworks
Burlington, WI
9,9582 of 23.5 pCi/L
(3 to 4 pCi/L)
10Waupun Public Utilities
Waupun, WI
8,5315 of 53.4 pCi/L
(3 to 3.8 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 Wisconsin

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

Violation TypeNumber of Violations
Failure to monitor regularly3