Why does my water smell like rotten eggs?

This is common for people on well water but does not exclude public water. The odor has nothing to do with eggs of course, but results from a bacteria known as Divibrio Sulfurcans. This happens when there is a break in the water pipe. The odor is actually gas that the a bacterium had created to live in. The bacteria changes sulfate into Hydrogen Sulfide which results in the stench and can make water have an unpleasant taste. Chlorinating your water would resolve the problem. Sometimes it could be in your drains, simply pour a cup of bleach down the drain to kill the bacteria and stop the odor.