Martin Lake swim beach at Lathrop State Park temporarily closes for E.coli levels higher than CDPHE allows

The Martin Lake swim beach at Lathrop State Park is temporarily closed due to E. coli levels exceeding Colorado Department of Public Health and Environment (CDPHE) standards. The closure affects only the designated swim beach, which is the only area routinely tested because it is the sole swimming zone. The park confirmed weekly tests usually show E. coli levels well below permitted thresholds, but this week's results were slightly elevated.