Winchester Water System, TN
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
About Winchester Water System
Winchester Water System serves about 25,683 people through 10,613 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 Franklin County, Tennessee. EPA system ID: TN0000754; phone on file: 931-967-4021. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Winchester Water System is 1 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 1 ppb |
| 2025 | 1 ppb |
| 2022 | 1 ppb |
| 2019 | 0.5 ppb |
| 2016 | 1 ppb |
How Winchester Water System 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. Winchester Water System's 1 ppb sits at the 69th percentile in Tennessee and the 56th nationally (higher means more lead).
Other water systems in Franklin County
7 other systems share Franklin County; 2 of them have a higher latest lead result than Winchester Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Center Grove-Winchester Springs | 6,979 | 1 ppb |
| Sewanee Utility District | 5,970 | 1 ppb |
| Decherd Water Dept | 4,809 | 7.86 ppb |
| Estill Springs Water Dept | 4,317 | 1 ppb |
| Cowan B.P.U. | 2,550 | 1 ppb |
| Huntland Water System | 1,808 | 1 ppb |
| Belvidere Rural U.D. | 1,771 | 2.03 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Winchester, 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 Winchester Water System 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. Systems that went over once often dip back under; here is what that means.