The well water at my house absolutely stunk before we got a filter. I'm not sure what the cause actually was, one person we had test the water said it was too much sulfur, another water tester said something else, and another something else. So in my case water filtration was necessary because the smell of the water alone was making me sick.
Other reasons people filter water could be for taste reasons or if you had something like lead in your water.
Other reasons people filter water could be for taste reasons or if you had something like lead in your water.
