IOWA — Following routine weekly testing, the Iowa Department of Natural Resources announced Friday that 16 Iowa state beaches are not advisable for swimming.

According to the DNR’s website, 15 of the state beaches were found to have E. Coli levels higher than the state’s standard. The affected beaches are listed below:

• Backbone Beach in Delaware County
• Beeds Lake Beach in Franklin County
• Bobwhite Beach in Wayne County
• Brushy Creek Beach in Webster County
• Crandalls Beach in Dickinson County
• Emerson Bay Beach Dickinson County
• Lake Ahquabi Beach in Warren County
• Lake Darling Beach in Washington County
• Lake Manawa Beach in Pottawattamie County
• Lake of Three Fires Beach in Taylor County
• Nine Eagles Beach in Decatur County
• Pine Lake South Beach in Hardin County
• Pleasant Creek Beach in Linn County
• Prairie Rose Beach in Shelby County
• Union Grove Beach in Tama County

According to the DNR’s website, one of the beaches did not exceed the standards for E. Coli but did exceed the state’s standards for Algal toxin action level.

• Viking Lake Beach in Montgomery County

Many of these beaches have been under a swimming not recommended advisory for several weeks due to persistent high E. coli levels. Advisories will be in place until the levels drop below the state standard.

For more information about the advisories and the other state beaches, visit the DNR’s website. The website is updated every Friday with the most recent test results.