The Quarry Lakes Regional Recreational Area in Fremont is closed for swimming through at least Wednesday, according to the East Bay Regional Park District.
East Bay park and municipal officials have issued an urgent warning for dog owners to keep their pets away from the water at Lake Chabot.
Residents who live in the Contra Costa Water District say their tap water has been tasting strange lately.
Some San Rafael residents are suffering through a stinky summer.
SAN JOSE, Calif. (KCBS) _ The city of San Jose is prohibiting water activity at Almaden Lake Park until further notice due to a harmful algae bloom.