Contaminated unlidded cold water tank - clean or replace?
I recently found a dead squirrel in the cold water tank in the loft. Fortunately, the tank feeds only the hot water cylinder and not the bathroom cold taps. I have flushed large amounts of clean water through the system, opening all the hot taps, but I suspect that I need to do more before we can safely use hot water. The tank is covered with loose fitting insulation, but has no lid. Should I (a) replace the tank, and (b) get specialist help with decontaminating and checking the system?