Estimated Nitrate Attributable Cancer Cases for each State

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About the Map

Nitrate in U.S. Tap Water May Cause More Than 12,500 Cancers a Year

Click on each state to see the estimated maximum and minimum number of cancer cases attributable to nitrate contamination and the average nitrate concentration of the state’s public water systems, weighted for population. States are shaded based on the maximum number of estimated cases per 100,000 people, with darker colors indicating higher cancer case estimates. Data for nitrate in drinking water are from 2010 to 2017.

To estimate the number of nitrate-attributable cancer cases in the U.S., EWG scientists used data from exposure scenarios published in seven U.S. and international studies showing increased risk of multiple cancers associated with different levels of nitrate in drinking water.

To see the full methodology, click here.


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