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National Drinking Water Database


Potassium-40 (total) in Wisconsin


Potassium-40 is a radioactive isotope of potassium released from natural deposits, nuclear testing, and industrial and medical instruments.

The Most Polluted Communities in Wisconsin

3 water utilities reported detecting Potassium-40 (total) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Potassium-40 (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Fond DU Lac Waterworks
Fond Du Lac, WI
42,0003 of 34.94 pCi/L
(4.13 to 5.6 pCi/L)
2Oak Creek Waterworks
Oak Creek, WI
31,4971 of 13.5 pCi/L
(3.5 pCi/L)
3Hudson Waterworks
Hudson, WI
11,3531 of 10.96 pCi/L
(0.96 pCi/L)

Health Based Limits for Potassium-40 (total)

There are no health based standards that EWG is using for this chemical

Violation Summary for Potassium-40 (total) in Wisconsin

There are no violations reported for this contaminant in Wisconsin