CITY WATER REPORT
Is First U D Knox County Tap Water Safe? 2026 Water Quality Report
FIRST U.D. OF KNOX COUNTY serves First U D Knox County · 115,531 residents.
- Utility
- FIRST U.D. OF KNOX COUNTY
- Population served
- 115,531
- Water source
- Surface water
- Disinfectant
- Pending utility report
- Hardness
- Pending utility report
Perfluorooctanoic acid (PFOA): not detected (limit 4.0 ng/L).
About this score
What the record shows
FIRST U.D. OF KNOX COUNTY (EPA PWSID TN0000369) delivers surface water to 115,531 residents. This report reflects 3 federally regulated PFAS result(s) from the 2024 UCMR5 round and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
Your water system
resolution confirmed
- FIRST U.D. OF KNOX COUNTY — serves most of the city
FIRST U.D. OF KNOX COUNTY is the primary municipal supplier for most First U D Knox County addresses. Confirm your supplier on your utility bill.
FIRST U.D. OF KNOX COUNTY is the public system on record for this city. This identifies which utility serves the city — confirm yours on your water bill before acting on a specific finding.
What stands out in First U D Knox County
Each row links to a dated measurement in the supplier profile. A missing measurement is never shown as a non-detect.
What this data doesn’t tell you
Public water-system monitoring reflects the system, not the water at an individual household tap at a given moment. Home plumbing, fixtures, storage, sampling location and timing can all change what actually reaches your glass.
The data behind this report
| Contaminant | Result | Benchmark | Sampled | Source |
|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | 2024 | UCMR5 Analytical Results — FIRST U.D. OF KNOX COUNTY (TN0000369) |
| Perfluorooctane sulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | 2024 | UCMR5 Analytical Results — FIRST U.D. OF KNOX COUNTY (TN0000369) |
| Perfluorohexane sulfonic acid (PFHxS) | < 10 ng/L | 10.0 ng/L federal MCL (2024) | 2024 | UCMR5 Analytical Results — FIRST U.D. OF KNOX COUNTY (TN0000369) |
| Lead (90th percentile) | 1 µg/L | 15 µg/L federal action level | 2023-2025 | Lead & Copper Rule 90th-percentile — FIRST U.D. OF KNOX COUNTY (TN0000369) |
Perfluorooctanoic acid (PFOA)
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Sampled
- 2024
Perfluorooctane sulfonic acid (PFOS)
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Sampled
- 2024
Perfluorohexane sulfonic acid (PFHxS)
- Result
- < 10 ng/L
- Benchmark
- 10.0 ng/L federal MCL (2024)
- Sampled
- 2024
Lead (90th percentile)
- Result
- 1 µg/L
- Benchmark
- 15 µg/L federal action level
- Sampled
- 2023-2025
Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify — a non-detect is not a guarantee of zero.
What can you do about it?
To reduce exposure to what was reported in First U D Knox County, these treatment technologies are relevant to the contaminants found here:
- Reverse osmosis
- NSF/ANSI 53 lead-certified filters
- Replacing lead service lines
Understand water treatment technologies — then the specific products below are matched to these findings.
Recommended solutions
NSF/ANSI 53 lead-reduction filter (optional)
leadOur pick: Clearly Filtered Water Filter Pitcher, 10 Cup BPA Free Water Filtration
Recommended because There is no safe level of lead, and older home plumbing can add it at the tap.
Recommendations are matched to the published findings first; the commercial offer is looked up afterwards and never changes which products qualify. As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Frequently asked questions
Who provides tap water in First U D Knox County?
FIRST U.D. OF KNOX COUNTY (PWS ID TN0000369) is the public water system on record for First U D Knox County, Tennessee. Confirm the utility on your water bill before acting on a specific finding.
Where does First U D Knox County get its drinking water?
Surface water (primary source of record in EPA SDWIS).
What does the latest First U D Knox County water report show?
Across the tracked parameters, PurityMap's current record for First U D Knox County shows 0 contaminants measured above their benchmark and 4 within benchmark. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
Is there lead in First U D Knox County's tap water?
In First U D Knox County, lead is detected but within its action level in the published record. Lead can still enter water from household plumbing after it leaves the system, so a system result cannot rule out an individual tap — a certified home test is the only way to know yours.
Are PFAS "forever chemicals" in First U D Knox County's water?
PFAS compounds appear in First U D Knox County's published record; the findings show each one's measured state and how it compares to its benchmark.
Sources
Methodology: how we analyze water.
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- Systems published
- 1 of 1
- Latest sample on record
- 2024 (PFAS) / LCR (lead)
The record, not the water. These describe how completely the city is monitored — not a quality score.