If your water smells like sulfur—that classic egg fart aroma—it’s usually sulfur bacteria. These little guys live in your water heater or in the well (if you’re on well water). They feast on decaying organic matter and produce hydrogen sulfide gas. Charming, right?
The fix is often simple: flush your water heater or replace the anode rod inside it. But if you only notice the smell from the hot water, it’s almost certainly the heater. Cold water reeking of eggs? Call a plumber—you might have a bacterial colony in your pipes.
