Dozens of dead pike have been removed from Radipole Lake, Weymouth after a fuel leak polluted the water. Picture: Phil Smith THE Environment Agency has been unable to find the source of a diesel leak which polluted a Weymouth lake and killed dozens of fish. As previously reported, firefighters, Environment Agency and Wessex Water were called to Radipole Lake opposite Swannery car park in response to reports of dead fish in the water on Wednesday, May 12. Environment Agency staff, with the assistance of firefighters, contained the fuel leak using an inflatable hose and absorption equipment. Initial investigations at the scene determined that the pollution was caused by a diesel leak from a drain which leads to the lake.