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Harmful algal bloom at Ice Harbor Dam - Elkhorn Media Group
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Harmful algal bloom at Ice Harbor Dam - Elkhorn Media Group
WALLA WALLA – (News release from WWCDCH) The Walla Walla County Department of Community Health has issued a warning for Ice Harbor Dam due to elevated levels of cyanobacteria (microcystin), also known as toxic/blue-green algae. Results from water samples taken on Monday, September 29, 2025, measured 80.9 ug/L microcystin, exceeding state recreation guidelines. Microcystin is a liver toxin that can pose a significant health risk if toxins are ing…
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