Went out to a house in Maryville, TN that was on well water and wanted to get there water tested. I found a bunch of old in line cartridge filters in the crawl space, which told me the well water comes out really dirty. We found high nitrates in the well water test, and the water was extremely hard. We recommended doing a whole house water softener, and a UV light to remove bacteria from the well water. Extremely low maintenance system with just doing something once a year.