I have a 1997 Carver 355 ACMY that I have owned for 15 years. My water tank is aluminum and it gets drained every fall. I inspected the internals of the tank during a water gauge replacement this spring, and it was clean. I have a screen filter upstream of the pump that gets cleaned every fall. My tank is filled with city water that is chlorinated. The cold water smells fine, but I am getting a sulfur smell from the hot water out of all the faucets. Is something going on inside my hot water tank? This is the first time since we have owned the boat that we are getting this smell. Any help would be appreciated.