Wake County says it routinely tests recreational lakes for bacteria and when levels exceed EPA standards, the area is closed to activities which include swimming or any activity where a person's head may go underwater.
Lakes are tested weekly during summer months.
Wake County offers a listing of lake operation on its website. Click here to see if a lake is open to swimmers.
Swimmers are reminded to wash their hands with soap and water, and thoroughly shower after swimming, tubing or skiing in area lakes to reduce chances of contracting a recreational water illness.
For more information about recreational water illnesses visit the CDC's website.