Roans Prairie, TX
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Roans Prairie
Roans Prairie serves about 40 people through 38 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Grimes County, Texas. EPA system ID: TX0930016; phone on file: 936-873-2075. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Roans Prairie's lead record
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Roans Prairie is 61 ppb across 5 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2020 | 61 ppb over 15 |
| 2017 | 23 ppb over 15 |
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. Roans Prairie's reported as 0 (not detected) sits at the 1st percentile in Texas and the 2nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
17 other systems share Grimes County; 7 of them have a higher latest lead result than Roans Prairie. 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 Pack Unit | 1,597 | 0 (not detected) |
| 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) |
Your move
Test your own tap with a certified lab first-draw sample; Anderson, 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 Roans Prairie 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. Why an old exceedance still matters: over the limit before, under it now.