Cumberland Heights U.D., 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
Cumberland Heights U.D. serves about 3,623 people through 1,342 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 surface water, in Montgomery County, Tennessee. EPA system ID: TN0000166; phone on file: 931-648-2365. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cumberland Heights U.D. is 1.23 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2022 | 1 ppb |
| 2019 | 0.5 ppb |
| 2016 | 1.23 ppb |
How Cumberland Heights U.D. 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. Cumberland Heights U.D.'s 1 ppb sits at the 38th percentile in Tennessee and the 54th nationally (higher means more lead).
Neighbouring systems
5 other systems share Montgomery County; 1 of them has a higher latest lead result than Cumberland Heights U.D.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Clarksville Water Department | 251,864 | 1 ppb |
| East Montgomery U.D. | 18,382 | 1 ppb |
| Cunningham Utility District | 16,068 | 1 ppb |
| Woodlawn Utility District | 12,714 | 0.74 ppb |
| Cunningham East-Montg Wtp | - | 2 ppb |
Next steps for Clarksville, TN
Test your own tap with a certified lab first-draw sample; Clarksville, 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 Cumberland Heights 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.