Echo Lake is toxic again - Do not swim, wade, fish, or enter the water
Sunday, July 26, 2026
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| Photo from previous toxic algae bloom in Echo Lake Photo courtesy City of Shoreline |
Based on results from 7/21/2026, Echo Lake currently has microcystin level above the threshold and has been placed under a Danger Advisory by King County Public Health.
Do not swim, wade, fish, or enter the water. Toxic algae can cause serious illness and can be fatal to humans and pets.

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