Harpeth Valley U.D., TN
Lead detected, under the action levels
Latest 90th-percentile lead: 4.72 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.
Harpeth Valley U.D. at a glance
Harpeth Valley U.D. serves about 65,518 people through 28,363 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 Davidson County, Tennessee. EPA system ID: TN0000286; phone on file: 615-352-7076. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Harpeth Valley U.D.'s lead record
That is up 3.72 ppb from 1 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Harpeth Valley U.D. is 4.72 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.72 ppb |
| 2022 | 1 ppb |
| 2019 | 3.34 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. Harpeth Valley U.D.'s 4.72 ppb sits at the 97th percentile in Tennessee and the 90th nationally (higher means more lead).
Other water systems in Davidson County
2 other systems share Davidson County; 0 of them have a higher latest lead result than Harpeth Valley U.D.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Metro Water Services | 789,969 | 0.8 ppb |
| Madison Suburban U.D. | 84,437 | 1 ppb |
Next steps for Nashville, TN
Test your own tap with a certified lab first-draw sample; Nashville, 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 Harpeth Valley U.D. 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. Systems that went over once often dip back under; here is what that means.