Beaches

Beach Water Results

July 2, 2024

Ledge Light Health District conducted routine bathing water sampling on Monday, July 1, 2024.  The following areas exceeded the bacterial action level set by the State of Connecticut:

• Green Harbor Beach in New London
• Highland Park in Ledyard
• Jupiter Point in Groton
• Mumford Cove in Groton
• Roger’s Lake (Hains Park) in Old Lyme
• Williams Beach in Stonington

Please be aware that rain or other contamination events that occurred before the routine weekly sampling may have contributed to elevated bacterial counts.  Areas with stormwater runoff (storm drainpipes or extensive impervious surfaces) or low water turnover (inland bathing areas) are particularly vulnerable to increased bacterial counts following rainfall.  We recommend all individuals responsible for the bathing areas take these events into consideration.

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Ledge Light Health District conducts weekly bathing water sampling from Memorial Day through Labor Day for the Towns and Cities of East Lyme, Groton, Ledyard, New London, Old Lyme, Stonington, and Waterford. 

Beach or bathing water quality is measured by the presence of enterococcal organisms, which are a group of organisms that may indicate the presence of potentially harmful bacteria. The State of Connecticut has issued guidelines for bathing water quality, which are used to determine if a bathing area needs to be resampled or posted with an advisory. A concentration of enterococcal organisms exceeding 104 colonies per 100 ml of marine water and 235 colonies per 100 ml of freshwater is considered unsatisfactory for bathing.

Ledge Light Health District wants to ensure that your day at the beach doesn’t result in illness related to poor water quality. At least once a week from mid-May to mid-September, our Sanitarians collect water samples from different bathing areas throughout the District. The water samples are then sent to the State laboratory for analysis. If any samples exceed the State guidelines, we resample the water to verify the result. If the second test confirms the level, a bathing advisory is posted at that location. We will continue to monitor the site and remove the posting as soon as the levels are safe. If you have any additional questions concerning beaches or public bathing water, please contact Danielle Holmes, Sanitarian.

Bathing Water Sampling Sites

The sampling sites in bold are EPA beach grant beaches (EPA monitors results from these beaches).

Helpful Resources

• The EPA Beach Monitoring and Notification website provides information on public health and environmental protection for beachgoers across the country.
• The CDC has information on staying safe and enjoying healthy water activities.
• Visit the Sound Health Explorer website for water quality reports for beaches along Long Island Sound.