If it's just the hot water that stinks the problem is in the water tank not the well. If it is gas from iron bacteria it can be common in some areas and bleaching a well cuts the population down real quick and a rather common fix. SHould be a long time until it has to be done again. I have had iron bacteria blossom in the hot water tank from shutting it off when going away. I tried peroxide but after a year of it never quite going away and coming back , drained the tank completely, inspected inside, replaced one of the two anode rods and now the problem is completely gone. Semi artesian well the water is apparently too cold for them. But they really like a lukewarm tank and multiply like rabbits. I don't shut it off any more. Not worth it.
I hate washing my car with the well water. Horrible hard water spots if I dont work on keeping the whole car wet until I can dry it. Used to LOVE washing my car myself. I am about due for a water change in the hot tub. I'll flush about 300 gallons into it.
The iron was almost off the charts at my previous house. The well was 210’ deep - just a bad area for iron. It was so bad that taking a shower smelled like you were walking around the thermal features at Yellowstone National Park. I had a softener, but the iron levels were too high for it to do much of anything. The solution I ended up with was a dedicated greensand iron filter (regenerates with potassium permanganate). That was hooked ahead of the softener. That took care of the smell. When I sold the house, I had to give the new owners some pointers on what I termed the ‘water treatment plant’. Thankfully the new house has a deep artesian (and flowing) well. It’s some of the best well water I’ve ever experienced.
If it’s sulfur in the water supply then this isn’t a one time deal. You’ll need to forever deal with the sulfur if you don’t want to smell it. Lots of ways. I’m also a licensed water treatment plant operator, and a PE, and my home well has a manganese oxide filter on it to remove iron and sulfur. Works like greensand that 343amc talked about but no potperm required. oh, doesn’t hurt a dang thing to bleach shock the well and plumbing. I like bleach too!
Thank you for the great replies! It doesn’t look like we will be selling the house any time soon. The probate court is closed until May!
Sometimes from sulfur bacteria. I had a water filter that was causing the trouble, seems the bacteria get in there and if they are not all destroyed they will come back. Clean or shock the well with chlorine and if there are any gaskets (neoprene or rubber) replace them after scrubbing the contacting parts well. Wear gloves and goggles chlorine (bleach) is tough on the skin and worse on the eyes. Fro what I understand they are not dangerous just smelly.