The Iowa Department of Natural Resources says the water concentration of E. coli at an Iowa beach maxed out its test kits.
The Spirit Lake beach, which is near the Minnesota-Iowa border, registered more than 24,000 viable bacteria. This is 10 times what is considered unhealthy.
The rapid growth of bacteria could be due to Iowa’s heat waves this summer or rainfall washing animal waste into the water.
The water was scheduled to be tested again on Wednesday.