Beach & Lake Water Quality
From Memorial Day to Labor Day, we test water at the beaches below.
We test for E. coli bacteria and blue-green algae and their toxins to protect swimmers and other recreational water users. If a water test is concerning, the beach will close for swimming until levels of E. coli bacteria or blue-green algae go down.
Before Swimming
- Always look at the water around you before you get in. Conditions can change quickly, and a test result may not always reflect the current water quality.
- Avoid swimming after a heavy rain because bacteria levels in the water may be high.
- Avoid contact with blue-green algae blooms. They may look blue-green, green, reddish-purple, or brown, and cause the water to be murky.
- Do not swim or let your pet swim if signs say the water is closed for swimming due to blue-green algae blooms or high bacteria levels.
- Be aware of any signs about swimmer's itch, a skin rash caused by tiny parasites found in water. Visit the state health department's page on swimmer's itch for more information on cause and treatment.
- Learn more in our blog post!
Beach Map
Beach Conditions
Conditions can change quickly, and a test result may not always reflect the current water quality. Always look at the water around you before you get in.
Click on beach name for latest water conditions and to learn location amenities.
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BB Clarke Beach Open
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Bernies Beach Open
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Brittingham Beach Open
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Esther Beach Open
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Frost Woods Beach Open
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James Madison Beach Open
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Marshall Beach Open
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McDaniel Park Beach Open
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Olbrich Beach Open
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Olin Beach Open
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Outdoor-UW Pier Open
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Schluter Beach Open
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Spring Harbor Beach Open
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Tenney Beach Open
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Tong Marina T-Dock Open
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Troll Beach Open
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Vilas Beach Open
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Warner Beach Open
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Willows Beach Open