Summertown Utility District, TN
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2025-2025). 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.
Summertown Utility District at a glance
Summertown Utility District serves about 5,593 people through 2,087 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Lawrence County, Tennessee. EPA system ID: TN0000676. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is down 2.21 ppb from 3.21 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Summertown Utility District is 6.02 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2025 | 3.21 ppb |
| 2024 | 1 ppb |
| 2024 | 2.57 ppb |
| 2022 | 6.02 ppb |
| 2019 | 2.52 ppb |
| 2018 | 1.26 ppb |
| 2018 | 1.31 ppb |
| 2017 | 1.51 ppb |
| 2017 | 0.5 ppb |
| 2016 | 1.52 ppb |
How Summertown Utility District 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. Summertown Utility District's 1 ppb sits at the 46th percentile in Tennessee and the 55th nationally (higher means more lead).
Neighbouring systems
8 other systems share Lawrence County; 4 of them have a higher latest lead result than Summertown Utility District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lawrenceburg Utility Systems | 21,244 | 7.31 ppb |
| Loretto Water Department | 5,054 | 1 ppb |
| Leoma Utility District | 4,808 | 1 ppb |
| Northeast Lawrence U.D. | 4,017 | 1 ppb |
| Fall River Rd Utility District | 3,988 | 2.76 ppb |
| St Joseph Water System | 1,533 | 1 ppb |
| Iron City Utility District | 732 | 4.9 ppb |
| West Point U.D. | 421 | 7.55 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Summertown, 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 Summertown Utility District whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2190 ppb (copper action level 1,300 ppb).
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.