Lone Oak Utility District, TN
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Lone Oak Utility District at a glance
Lone Oak Utility District serves about 644 people through 243 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Sequatchie County, Tennessee. EPA system ID: TN0008228; phone on file: 423-886-2683. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lone Oak Utility District is 1 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2022 | 1 ppb |
| 2019 | 0.5 ppb |
| 2018 | 0.5 ppb |
| 2017 | 0.5 ppb |
| 2016 | 0.5 ppb |
Against other Tennessee systems
Of the 453 Tennessee systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 10 have gone over at some point. Lone Oak Utility District's 1 ppb sits at the 27th percentile in Tennessee and the 53rd nationally (higher means more lead).
Neighbouring systems
2 other systems share Sequatchie County; 0 of them have a higher latest lead result than Lone Oak Utility District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dunlap Water System | 9,782 | 1 ppb |
| Cagle-Fredonia U.D. | 3,363 | 1 ppb |
Next steps for Signal Mountain, TN
Test your own tap with a certified lab first-draw sample; Signal Mountain, TN may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Lone Oak Utility District whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.