I had a discoloration of my hot water (redish color). My house is only 8 years of age and piped with copper piping throughout the house. The water became clearer after a while The cold water remained clear. What was the Root Cause of this? Thanks.
I have the same problem and have been told that it is sediment in the tank. I tried to flush it out by draining the tank and refilling a couple of times but it did not cure the problem. I plan on replacing my hot water heater since it is now about 13 years old. Maybe someone else can give you more direct advice.