Tdcj Coffield Unit, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 5.19 ppb (monitoring period 2026-2026). 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 Tdcj Coffield Unit
Tdcj Coffield Unit serves about 7,965 people through 2,655 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by the state and draws groundwater, in Anderson County, Texas. EPA system ID: TX0010031; phone on file: 936-437-7247. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 1.5 ppb from 6.69 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Tdcj Coffield Unit is 7.5 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.19 ppb |
| 2025 | 6.69 ppb |
| 2025 | 6.99 ppb |
| 2024 | 7.28 ppb |
| 2024 | 5.7 ppb |
| 2020 | 3.4 ppb |
| 2019 | 6.3 ppb |
| 2018 | 6.4 ppb |
| 2017 | 6.8 ppb |
| 2016 | 7.5 ppb |
Where this result ranks
Of the 4,447 Texas systems with a lead result, the median latest reading is 0.28 ppb; 15 are over 15 ppb right now and 202 have gone over at some point. Tdcj Coffield Unit's 5.19 ppb sits at the 97th percentile in Texas and the 91st nationally (higher means more lead).
Nearby utilities
23 other systems share Anderson County; 0 of them have a higher latest lead result than Tdcj Coffield Unit. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Palestine | 31,272 | 0 (not detected) |
| Tdcj Beto Unit | 6,613 | 2.5 ppb |
| Brushy Creek Wsc | 4,866 | 0 (not detected) |
| Walston Springs Wsc | 4,221 | 0 (not detected) |
| Four Pines Wsc | 3,603 | 2.23 ppb |
| Slocum Wsc | 3,120 | 2.25 ppb |
| B C Y Wsc | 3,012 | 1.47 ppb |
| City Of Elkhart | 2,871 | 0 (not detected) |
| Neches Wsc | 2,295 | 0 (not detected) |
| City Of Frankston Downtown Plant | 1,896 | 0 (not detected) |
Next steps for Huntsville, TX
Test your own tap with a certified lab first-draw sample; Huntsville, TX 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 Tdcj Coffield Unit 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.