Total trihalomethanes (TTHM) above the legal limit in the period starting January 2026.
Serves about 3,917 people (1,536 connections) with surface water bought from Gainesboro Water System.
From EPA's record for TN0000845. PurityMap is independent of Jackson County U.D. #3.
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19 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.10378 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.08728 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.096 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.11025 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 0.09468 mg/L | 0.080 mg/L | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 0.0901 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2024 | Total trihalomethanes (TTHM) | 0.08213 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2023 | Total trihalomethanes (TTHM) | 0.08735 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2022 | Total trihalomethanes (TTHM) | 0.09335 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2022 | Haloacetic acids (HAA5) | 0.0642 mg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2022 | Total trihalomethanes (TTHM) | 0.09978 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2022 | Haloacetic acids (HAA5) | 0.06818 mg/L | 0.060 mg/L | Archived |
| Apr–Jun 2022 | Total trihalomethanes (TTHM) | 0.0928 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.09015 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2022 | Haloacetic acids (HAA5) | 0.06253 mg/L | 0.060 mg/L | Resolved |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 0.0826 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2019 | Total trihalomethanes (TTHM) | 0.083 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2018 | Total trihalomethanes (TTHM) | 0.087 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2018 | Total trihalomethanes (TTHM) | 0.0824 mg/L | 0.080 mg/L | Resolved |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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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.
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Follow this water →Jackson County U.D. #3's phone number on EPA record is 931-268-2880. Its mailing address is P.O. BOX 367, GAINESBORO, TN 38562.
According to EPA's record, Jackson County U.D. #3 uses surface water bought from Gainesboro Water System.
EPA's record shows 19 health-based violations for Jackson County U.D. #3 in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting January 2026. EPA also lists 10 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Jackson County U.D. #3's latest lead and copper round, which ended in December 2025, was 3.76 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Jackson County U.D. #3. Its phone number on EPA record is 931-268-2880. Its mailing address on EPA record is P.O. BOX 367, GAINESBORO, TN 38562. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.