I have a foul smell in my home’s hot water system. The plumber replaced the rod in the tank a month ago and chlorinated the system. When the smell came back, he came back and replaced the rod with a different metal and chlorinated again. Now, two weeks later, the smell is back. The plumber suggested a drip chlorine system. Any second opinions?
Your water likely contains a Sulfate Reducing Bacteria (SRB). These are not harmful. Just a smelly nuisance. Continuous chlorination is the solution. A drop pellet or a chemical feeder for liquid chlorine should be used to do continuous chlorination of the well water. You will likely also want a carbon filter on the drinking water to remove the chlorine.