The Issues

Water pollution harms Green Hill Pond, the marine life that inhabits it, the groundwater supply, and the people who seek to use it for recreation. The major sources of pollution are cesspools and septic systems, and stormwater runoff, all of which discharge nitrogen and bacteria into Green Hill Pond and its tributaries. The pollution from these sources poses risks to public health and has led to the closing of shellfish beds since 1994. Uniquely slow tidal exchange exacerbates these issues in Green Hill Pond. Learn more below

Poor Tidal Exchange

Learn why uniquely poor tidal exchange makes cleaning up Green Hill Pond especially challenging.