Prior Lake Spring Lake Watershed District
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PLSLWD Board Approves Alum Treatment

Posted by PLSLWD Staff - October 14, 2013 - Completed Projects, News, Spring Lake Alum Treatment

On October 8th, 2013 the PLSLWD Board of Managers voted 3-2 to apply alum (aluminum sulfate) to Spring Lake this fall.  The alum will be applied by HAB Aquatic Solutions, Inc., a specialized company in aluminum-based products from Nebraska. The application will most likely start during the last week of October or early November, and is expected to take between 10 and 14 days to complete.

Alum will be applied to Spring Lake using a barge, where it will form a fluffy, “cotton ball-like” substance that binds to phosphorus. The barge will operate up to 12 hours per day, and there will be several deliveries of alum by 5,000 gallon tanker trucks every day in order to properly dose Spring Lake.

alum barge

A barge will apply alum to Spring Lake.

Spring Lake residents will be notified of the start of the treatment as soon as the official schedule has been decided. While the alum is being applied to the lake the District recommends that boats make an effort to go slow and minimize wakes. The more calm the water the less the alum will be moved around, and the more effective the treatment will be.

Check out the most recent article highlighting the PLSLWD Board’s approval of the alum treatment in the Prior Lake American. Please contact the District if you have any questions or concerns about the treatment and be sure to stay tuned for updates!

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Prior Lake – Spring Lake Watershed District

The District covers about 42 square miles in Scott County, MN. Water in the PLSLWD flows mainly from the southwest to the northeast through Spring, Upper Prior and Lower Prior Lakes, and then north through the Prior Lake Outlet Channel to the Minnesota River near Valley Fair amusement park.
Clean Water Land & Legacy Amendment

Prior Lake - Spring Lake Watershed District
4646 Dakota Street SE
Prior Lake, MN 55372

Phone: (952) 447-4166
Email: info@plslwd.org

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