Tennessee tap water by county
Hardness, PFAS sampling, lead and violations for the largest water systems in 5 Tennessee counties. In 3 of them, at least one large system detected PFAS in EPA testing (a detection isn't a violation).
| County | Largest system | Hardness | PFAS detected |
|---|---|---|---|
| Shelby County | Memphis Light, Gas, & Water | 2.8 gpg (high) | 0 of 6 systems |
| Davidson County | Metro Water Services | 5.9 gpg (high) | 0 of 3 systems |
| Knox County | Knoxville Utilities Board - Kub | 7.0 gpg (low) | 2 of 6 systems |
| Hamilton County | Tennessee American Water | 4.3 gpg (low) | 5 of 6 systems |
| Rutherford County | Consolidated U.D. of Rutherford Co | 11.2 gpg (low) | 4 of 4 systems |
Public-record figures, not a test of your tap. Not 100% accurate or guaranteed. Confirm with a water test, your utility or a qualified pro before you buy or act.
Hardness confidence: high = utility report; low = county estimate of untreated local water. Don't see your county? Use the water quality lookup.