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.
-
BB Clarke Beach Closed for Season
-
Bernies Beach Closed for Season
-
Brittingham Beach Closed for Season
-
Esther Beach Closed for Season
-
Frost Woods Beach Closed for Season
-
Goodland County Park Beach Closed for Season
-
Hudson Park Lake Access Point Closed for Season
-
James Madison Beach Closed for Season
-
Lake Mendota County Park Beach Closed for Season
-
Maple Bluff Beach Park Beach Closed for Season
-
Marshall Beach Closed for Season
-
McDaniel Park Beach Closed for Season
-
Memorial Union (Pier) Closed for Season
-
Olbrich Beach Closed for Season
-
Olin Beach Closed for Season
-
Outdoor-UW Pier Closed for Season
-
Schluter Beach Closed for Season
-
Spring Harbor Beach Closed for Season
-
Stewart County Park Beach Closed for Season
-
Tenney Beach Closed for Season
-
Tong Marina T-Dock Closed for Season
-
Troll Beach Closed for Season
-
Verona Fireman’s Park Beach Closed for Season
-
Vilas Beach Closed for Season
-
Warner Beach Closed for Season
-
Willow Drive/Lot 60 Boat Launch Closed for Season
-
Willows Beach Closed for Season