Franklin Water Dept, 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.
Who runs the water here
Franklin Water Dept serves about 77,222 people through 27,001 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 surface water, in Williamson County, Tennessee. EPA system ID: TN0000246; phone on file: 615-794-4554. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Franklin Water Dept's lead record
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Franklin Water Dept is 1.4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2022 | 1 ppb |
| 2019 | 1 ppb |
| 2016 | 1.4 ppb |
How Franklin Water Dept compares
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. Franklin Water Dept's 1 ppb sits at the 75th percentile in Tennessee and the 56th nationally (higher means more lead).
Nearby utilities
6 other systems share Williamson County; 1 of them has a higher latest lead result than Franklin Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| H.B.& T.S. Utility District | 40,094 | 1 ppb |
| Milcrofton Utility District | 38,032 | 0.58 ppb |
| Nolensville-College Grove U.D. | 34,159 | 6.17 ppb |
| Mallory Valley U.D. | 31,703 | 1 ppb |
| Brentwood Water Department | 30,645 | 1 ppb |
| Gateway Utility Company, Inc. | 1,070 | 0.55 ppb |
Next steps for Franklin, TN
Test your own tap with a certified lab first-draw sample; Franklin, 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 Franklin 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.