Throughout the summer Great Lakes Echo will feature an occasional series of public service announcements produced by Michigan’s Ottawa County Health Department to promote clean beaches. The department has created rack cards on issues that affect the health of beaches to distribute in schools and visitors’ centers throughout the state. This one stresses the importance of hand washing after you swim and before you eat. Washing your hands will help prevent the spread of bacteria, such as E. coli, which can cause recreational water illness. For example, Echo reported last year that staphylococcus aureus, or staph, was an emerging beach threat likely caused by swimmers since staph usually lives on skin.