California Today

1 in 5 Americans exposed to nitrate-tainted water

03 May 2026 09:20

A new study by the Environmental Working Group reveals that nearly one in five Americans is exposed to drinking water with elevated nitrate levels, primarily from agricultural runoff. - 6,114 public water systems across the U.S.

have high nitrate levels, affecting 62 million people. - Nitrates are linked to colorectal cancer, thyroid disease, and birth defects, even at low concentrations.

- States with highest exposure include California, Kansas, and Texas, where CAFOs are prevalent. - Climate change worsens the problem, and proposed Farm Bill cuts could reduce conservation funding.

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