Tdcj Pack Unit, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Tdcj Pack Unit serves about 1,597 people through 532 service connections, which makes it a small system under EPA's size classes. It is owned by the state and draws groundwater, in Grimes County, Texas. EPA system ID: TX0930034; phone on file: 936-437-7247. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is down 5.81 ppb from 5.81 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Tdcj Pack Unit is 5.81 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 5.81 ppb |
| 2025 | 1.67 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 Pack Unit's reported as 0 (not detected) sits at the 31st percentile in Texas and the 29th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Grimes County
17 other systems share Grimes County; 7 of them have a higher latest lead result than Tdcj Pack Unit. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Navasota | 8,068 | 0 (not detected) |
| Wickson Creek Sud Grimes County | 4,843 | 0.64 ppb |
| Dobbin Plantersville Wsc 2 | 2,766 | 0.94 ppb |
| G & W Wsc | 1,650 | 0.75 ppb |
| Tdcj Luther Units | 1,431 | 2.94 ppb |
| B & J Water Co | 675 | 0 (not detected) |
| Mill Creek Estates | 608 | 0 (not detected) |
| Anderson Water System | 226 | 0 (not detected) |
| Poe Bracewell Water System | 220 | 0 (not detected) |
| Richards Water System | 200 | 0 (not detected) |
Your move
Look up your address in Tdcj Pack Unit's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Tdcj Pack 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.