An urgent advisory regarding drinking water has been issued from Lake County’s Public Health Officer. Dr. Gary Pace says effective immediately, people on private water systems whose tap water comes from their own private intake into the lake, in the Oaks Arm and Lower Arm of Clear Lake should not drink the water. Very high levels of Cyanotoxin have been identified in these areas of the lake, and the health department is concerned there may be health impacts if private water systems are not effectively filtering out these toxins.