Waller County Road Improvement Dist 1, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2026). 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
Waller County Road Improvement Dist 1 serves about 1,400 people through 683 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Waller County, Texas. EPA system ID: TX2370094; phone on file: 409-654-6700. 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 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Waller County Road Improvement Dist 1 is 1.42 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 1.42 ppb |
| 2019 | 0.53 ppb |
| 2016 | 0 (not detected) |
How Waller County Road Improvement Dist 1 compares
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. Waller County Road Improvement Dist 1's reported as 0 (not detected) sits at the 30th 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.
Neighbouring systems
41 other systems share Waller County; 17 of them have a higher latest lead result than Waller County Road Improvement Dist 1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Prairie View A&M University | 9,550 | 0.74 ppb |
| City Of Prairie View | 8,184 | 1.3 ppb |
| City Of Hempstead | 7,158 | 6.94 ppb |
| City Of Waller | 5,448 | 1.5 ppb |
| Brookshire Mwd | 5,364 | 1.92 ppb |
| G & W Wsc | 4,887 | 0 (not detected) |
| Harris-Waller Counties Mud 5 | 4,098 | 0 (not detected) |
| Willow Creek Farms Mud | 3,453 | 0 (not detected) |
| Waller County Mud 37 | 3,258 | 0.7 ppb |
| Oak Hollow Subdivision | 1,980 | 0 (not detected) |
What to do in your house
Look up your address in Waller County Road Improvement Dist 1'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 Waller County Road Improvement Dist 1 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. Small systems behave differently: why small systems go over more often.