The Lowcountry is reported to currently have ten waterways filled with high bacteria levels. The Charleston Waterkeeper samples 15 recreational hot spots every Wednesday from May to October, revealing any water quality issues. Just last week, Charleston's Waterkeeper, Andrew Wunderley, reported large numbers of high bacteria levels in several popular swimming and paddling areas, just off of many waterway docks. Wunderley reported that Shem Creek and James Island creek showed high results along with some very rare high results at the Folly Beach boat landing and the cove behind Sullivan's Island. High bacteria levels are often due to heavy rain which results in a water quality issues from animal waste and occasionally sewer overflows filling the waterways. DHEC has reported 18 sewer overflows in Charleston County this year.