Clark County Public Health has issued a swim beach warning at Battle Ground Lake after routine testing showed elevated levels of E. coli bacteria.
The bacteria can cause serious gastrointestinal illness when water is accidentally swallowed, according to Public Health.
Warning signs are being posted at the lake. While the warning is in place, Public Health advises against swimming and wading, especially for young children who are more likely to accidentally swallow water. People who have contact with the water at the swim beach should rinse their skin.
Public Health will collect additional water samples Tuesday. The results of those tests will determine whether the warning will be lifted or if the beach will be closed.
Battle Ground Lake State Park remains open to the public. Park visitors may continue to catch and consume fish caught in the lake but should thoroughly clean all fish and equipment, according to Public Health.
The swim beach at Vancouver Lake remains closed due to elevated levels of E. coli bacteria.