Originally Posted by missing link
My hot water occasionally gives me a sulfur or iron smell. I spoke to a water softener company about it because I am on a well with a softener. He said that build up of sediment and other minerals in the hot water will occasionally give a sulfur, rotten egg or metal smell and that I can purge them by doing as a previous poster said. Drain tank and refill a few times to flush sediment out.
Originally Posted by GilaMinumBeer
I may also suggest you find out how to inspect your Anode. If it is significantly coated or corroded, it too will increase the potential for sulfuric odors.
This is absolutely true. Copper anodes can put off a real bad sulfuric odors in water with low pH. This is especially true if you use RO or DI water.
The RO or DI is so pure molecularly the that sulfur ions in the copper will leach out into the water attaching to oxygen molecules. They have an affinity to attach to something. It just happens that the copper will give off sulfur. The water is so pure that it starts dissolving the copper. The end result is that it will smell like rotten eggs.
Low pH water has the same effect as RO or DI in dissolving copper.
So yes, if it smells like sulfur yank out the anode and plug the hole with plug fitting.