Tennessee American Water, 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.
About Tennessee American Water
Tennessee American Water serves about 207,046 people through 86,994 service connections, which makes it a very large system under EPA's size classes. It is privately owned and draws surface water, in Hamilton County, Tennessee. EPA system ID: TN0000107; phone on file: 423-771-4705. 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 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Tennessee American Water is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2022 | 2 ppb |
| 2019 | 2 ppb |
| 2016 | 2 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. Tennessee American Water's 1 ppb sits at the 77th percentile in Tennessee and the 56th nationally (higher means more lead).
Nearby utilities
7 other systems share Hamilton County; 2 of them have a higher latest lead result than Tennessee American Water. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hixson Utility District | 68,306 | 0.33 ppb |
| Eastside Utility District | 59,612 | 2.32 ppb |
| Savannah Valley U.D. | 30,571 | 1.8 ppb |
| Northwest Utility District | 20,710 | 1 ppb |
| Walden'S Ridge U.D. | 9,265 | 1 ppb |
| Signal Mountain Water System | 7,761 | 1 ppb |
| Union Fork-Bakewell U.D. | 6,464 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Chattanooga, 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 Tennessee American Water 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. Systems that went over once often dip back under; here is what that means.