FIRST U.D. OF KNOX COUNTY
TN · PWS ID TN0000369 · Community water system
64
contaminants tested
8
detected
115,531
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0064 ug/L | 3/4 | 2024 |
| PFHxA | 0.0030 ug/L | 1/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 76.5 UG/L | 196/196 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 43.9 UG/L | 196/196 | SYR4 | 2014–2019 |
| LEAD SUMMARY | 0.0080 mg/L | 13/13 | LCR | 2025 |
| Nitrate | 868 UG/L | 12/12 | SYR4 | 2014–2019 |
| 2,4-D | 0.4000 UG/L | 1/6 | SYR4 | 2015–2019 |
| Gross Alpha, Excl. Radon and U | 1.41 PCI/L | 1/1 | SYR4 | 2016 |
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAtrazineBenzeneCHLOROBENZENECarbon tetrachlorideDICHLOROMETHANEDalaponDinosebEthylbenzeneHFPO-DANEtFOSAANFDHANMeFOSAAPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
KNOXVILLE