That rotten egg smell is almost always caused by hydrogen sulfide gas. Think of it as the flatulence of the microscopic world—except it’s not coming from you, it’s coming from bacteria partying in your pipes. These little buggers love dark, damp places with no oxygen, like the inside of your water heater or a rarely-used faucet. They snack on sulfur naturally present in your water supply, and their digestive byproduct is that stinky gas. It’s like a frat house for germs, and you are the unlucky neighbor.
Fun fact: Hydrogen sulfide is the same gas that makes volcanic vents smell like Satan’s breakfast. But don’t worry—your faucet isn’t about to erupt. It’s just a microbial rave that needs to be shut down.
The Hot Water vs. Cold Water Showdown
Here’s a telltale sign: does the smell come out of both hot and cold taps, or just one? If it’s only the hot water, you’ve found your villain—the water heater. When you don’t use your water heater for a while (like when you go on vacation), the water inside sits there at a cozy 70-80°F, which is bacteria paradise. It’s basically a lukewarm jacuzzi for stink-bugs.
If the smell comes from both hot and cold water, then the problem is further up the pipeline, probably in your well or the city supply. In that case, you’re not alone—your whole neighborhood might be suffering from a collective case of egg-ass water. Time to start a neighborhood watch group, but for faucets.
