Tennessee tap water
17 of 271 Tennessee water systems with full PFAS testing (6%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 444 active community water systems in the EPA file; 265 serve 3,300+ people and have a full PFAS set.
- 47 systems had at least one health-based violation since 2021-10-26.
- 0 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| Metro Water Services | 789,969 | No | 0 |
| Memphis Light, Gas, & Water | 659,500 | No | 0 |
| Knoxville Utilities Board - Kub | 254,671 | No | 0 |
| Consolidated U.d. of Rutherford CO | 221,871 | No | 0 |
| Tennessee American Water | 207,046 | No | 0 |
| White House Utility District | 130,411 | No | 0 |
| First U.d. of Knox County | 115,531 | No | 0 |
| Murfreesboro Water department | 114,331 | No | 1 |
All 36 utilities with a page in Tennessee
- Bartlett Water System 57,129
- City of Maryville W&s dept 52,105
- Cleveland Utilities 95,087
- Collierville Water dept 51,972
- Columbia Power and Water Systems 84,617
- Consolidated U.d. of Rutherford CO 221,871
- Cookeville Water dept 49,711
- Eastside Utility District 59,612
- First U.d. of Knox County 115,531
- Fort Campbell Water System 43,270
- Franklin Water dept 77,222
- Gallatin Water department 65,964
- Hallsdale-Powell U.d. 84,315
- Harpeth Valley U.d. 65,518
- Hendersonville U.d. 59,034
- Hixson Utility District 68,306
- Jackson Water System 91,111
- Johnson City Water dept 105,057
- Kingsport Water dept 107,739
- Knox-Chapman Utility District 41,311
- Knoxville Utilities Board - Kub 254,671
- Lebanon Water System 60,669
- Madison Suburban U.d. 84,437
- Memphis Light, Gas, & Water 659,500
- Metro Water Services 789,969
- Murfreesboro Water department 114,331
- Oak Ridge dept of Public Works 41,614
- Smyrna Water System 66,942
- South Blount Utility District 53,864
- Spring Hill Water dept 65,840
- Springfield Water System 46,546
- Tennessee American Water 207,046
- Water Auth of Dickson County 68,675
- West Knox Utility District 77,825
- West Wilson Utility District 86,978
- White House Utility District 130,411
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.