Union City Water Dept, TN
Lead detected, under the action levels
Latest 90th-percentile lead: 1.5 ppb (monitoring period 2026-2028). 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.
Union City Water Dept at a glance
Union City Water Dept serves about 16,180 people through 6,856 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Obion County, Tennessee. EPA system ID: TN0000720; phone on file: 731-885-9601. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Union City Water Dept's lead record
Against the period ending 2025 (0.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Union City Water Dept is 1.5 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 1.5 ppb |
| 2025 | 0.7 ppb |
| 2022 | 0.6 ppb |
| 2019 | 1.33 ppb |
| 2016 | 1 ppb |
Where this result ranks
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. Union City Water Dept's 1.5 ppb sits at the 83rd percentile in Tennessee and the 64th nationally (higher means more lead).
Nearby utilities
9 other systems share Obion County; 1 of them has a higher latest lead result than Union City Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| South Fulton Water System | 4,043 | 0.9 ppb |
| Elbridge Water Association | 3,239 | 1 ppb |
| Troy Water System | 2,096 | 0.5 ppb |
| Obion Water Dept | 1,615 | 1.5 ppb |
| Kenton Water Dept | 1,492 | 0.9 ppb |
| Hornbeak Utility District | 1,416 | 1 ppb |
| Samburg Utility District | 758 | 1 ppb |
| Reelfoot Water Association | 644 | 1 ppb |
| Mason Hall Development Corp | 211 | 2.6 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Union City, 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 Union City Water Dept 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. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.