Nothing like a splash in the water to help beat the unbearable temperatures this week.

But before you dive in, check your beach it could be closed.

King County water field testers are out all summer checking the water for bacteria and toxic algae that could make you and your pet sick.

We'll tag along for a test at Lake Sammamish.

Check the King County website for water quality updates here.

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Is your beach safe? County water testers are checking