No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting July 2025.
Serves about 8,313 people (2,862 connections) with surface water from its own intake, and buys water from Pineville Water System, Barbourville Utilities and Corbin Utilities Commission.
From EPA's record for KY0610110. PurityMap is independent of Knox County Utility Commission.
Are you this utility? Correct this listing →
2 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jul–Sep 2025 | Haloacetic acids (HAA5) | 0.069 mg/L | 0.060 mg/L | Resolved |
| Apr–Jun 2025 | Haloacetic acids (HAA5) | 0.061 mg/L | 0.060 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2025 to October 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 14.3 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2025-01-06 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-06 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-06 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-06 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-06 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-10-07 | UCMR5 Analytical Results: KNOX COUNTY UTILITY COMMISSION (KY0610110) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Knox County Utility Commission's phone number on EPA record is 606-546-5300. Its mailing address is PO BOX 1630, BARBOURVILLE, KY 40906.
According to EPA's record, Knox County Utility Commission uses surface water from its own intake, and buys water from Pineville Water System, Barbourville Utilities and Corbin Utilities Commission.
EPA's record shows 2 health-based violations for Knox County Utility Commission in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting July 2025. EPA also lists 6 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Knox County Utility Commission's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for Knox County Utility Commission. Its phone number on EPA record is 606-546-5300. Its mailing address on EPA record is PO BOX 1630, BARBOURVILLE, KY 40906. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.