St. Clair sits close enough to Ozark limestone country that groundwater across the area tends to run hard, and a lot of the homes we service out toward Sullivan and Union are still on private wells rather than a municipal line. That means two houses a mile apart can need completely different filtration setups. One might just need a carbon filter to remove chlorine taste from the St. Clair system. The other, on a well out past White Acres, might be dealing with iron staining and a sulfur smell that no store-bought filter pitcher could ever fix.
We've been working on plumbing across Franklin County since 2001, and our crew averages 10 years in the trade, long enough to know the difference on sight before the test results even come back.