My water smells like crap -

[Minna Reid]

Literally. When I bought the place I had the water checked out - tested fine. I also had the septic checked out which is almost new and also tested fine. So why does my water smell like ****? I dont know. I'm surely not gonna taste test it. But it needs to be straight for prospect buyers.Last thing I need is for them to wash their hands or (god forbid) have a glass of water, and be turned off to my house. How do I solve this? Do you think a simple filter installed in the main water line would take care of it? I don't think it's a safety issue, just a funky smell.