A new report card was released Friday that lists Connecticut's cleanest water and its dirtiest.

The Save the Sound annual report card gave most beaches in western Connecticut an “A” or “B” grade.

But Bridgeport's Seaside Park, Silver Sands in Milford and Bryam Beach in Greenwich all got a “D.”

Peter Linderoth, of Save the Sound, told News 12 that the pollution sources in those cases are generally broken sewer lines, leaking sewage infrastructure and waste from wildlife.

The report also came with a warning about climate change. It says more rainfall means stormwater systems will struggle to keep up.

Save the Sound is urging cities and towns to make upgrades.