http://www.dailymail.co.uk/news/article-3694101/Toxic-algal-bloom-covers-90-percent-Utah-Lake.html
The toxic algal bloom continues to swim through Utah’s lakes, forcing officials to close more areas
As a precaution, Riverton, South Jordan, West Jordan and Herriman have all shut down secondary water systems as of Monday afternoon.
Always, look before you swim, and don't drink that water.