Treatment Scheduled to Improve Water Quality of Robbinsdale’s Crystal Lake
Help is coming soon to improve the water quality of Crystal Lake in Robbinsdale. The body of water is listed as an impaired water due to excessive algae growth.
In early June, the lake will get treated with alum, a chemical used to decrease phosphorus levels that toxic algae feed off of. The treatment may turn Crystal Lake a turquoise color as the alum binds to phosphorus and sinks to the bottom of the lake.
During the process, boaters will be asked to temporarily stay off of the lake.
The Shingle Creek Watershed Management Commission received a $216,000 state grant to help pay for the project. The money will also be used to reduce the number of carp in the lake.
To learn more about the alum treatment, the Minnesota Pollution Control Agency has answers to frequently asked questions.