Waller County Mud 34c, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.77 ppb (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. 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.
Waller County Mud 34c at a glance
Waller County Mud 34c serves about 141 people through 47 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Waller County, Texas. EPA system ID: TX2370134; phone on file: 713-623-4531. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Waller County Mud 34c's lead record
Against the period ending 2025 (1.92 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Waller County Mud 34c is 1.92 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.77 ppb |
| 2025 | 1.92 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. Waller County Mud 34c's 1.77 ppb sits at the 79th percentile in Texas and the 67th nationally (higher means more lead).
Other water systems in Waller County
41 other systems share Waller County; 3 of them have a higher latest lead result than Waller County Mud 34c. 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) |
Next steps for Houston, TX
Test your own tap with a certified lab first-draw sample; Houston, 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 Waller County Mud 34c 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. Systems that went over once often dip back under; here is what that means.