The Environmental Health Division of the St. Mary’s County Health Department (SMCHD) has begun its annual beach water monitoring program for the 2026 summer season. From Memorial Day through Labor Day, SMCHD routinely monitors water quality at public beaches throughout St. Mary’s County to help residents and visitors make informed decisions about safe recreational water use. Current beach water quality advisories for beaches monitored by SMCHD are available at SMCHD Beach Monitoring Page (smchd.org/beach). Results are generally updated weekly on Fridays, depending on sampling schedules and laboratory processing times. SMCHD staff collect water samples that are tested for enterococcus, a type of bacteria commonly found in the digestive systems of people and animals. These bacteria at higher levels can indicate an increased risk of illness for swimmers. Test results are evaluated using health-based standards established by the U.S. Environmental Protection Agency and adopted by Maryland. If bacteria levels exceed the state’s beach action value, SMCHD will issue a public advisory. While water monitoring helps identify potential concerns, swimming in natural waters is never risk-free. Conditions can change quickly, and naturally occurring hazards – including harmful algal blooms or bacteria such as Vibrio – may still be present even when monitored levels of enterococcus meet […]
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