Harris County Mud 144, TX
Above the federal action level
Latest 90th-percentile lead: 34.6 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. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
Harris County Mud 144 at a glance
Harris County Mud 144 serves about 3,219 people through 1,073 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 surface water, in Harris County, Texas. EPA system ID: TX1010923; phone on file: 832-228-6468. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Harris County Mud 144's lead record
That is up 33.59 ppb from 1.01 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Harris County Mud 144 is 34.6 ppb across 6 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 34.6 ppb over 15 |
| 2025 | 1.01 ppb |
| 2024 | 3.54 ppb |
| 2024 | 1.57 ppb |
| 2023 | 17.9 ppb over 15 |
| 2022 | 6.89 ppb |
How Harris County Mud 144 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. Harris County Mud 144's 34.6 ppb sits at the 100th percentile in Texas and the 100th nationally (higher means more lead).
Nearby utilities
690 other systems share Harris County; 0 of them have a higher latest lead result than Harris County Mud 144. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Houston | 2,970,543 | 5 ppb |
| City Of Pasadena | 152,000 | 3.72 ppb |
| Clear Lake City Water Authority | 89,702 | 0.88 ppb |
| City Of Baytown | 86,004 | 2.1 ppb |
| City Of Houston Ud 5 - Kingwood | 80,073 | 0.51 ppb |
| Harris County Mud 165 | 40,503 | 1.3 ppb |
| City Of La Porte | 36,569 | 2.35 ppb |
| City Of Deer Park | 34,495 | 0 (not detected) |
| Northwest Harris County Mud 5 | 25,425 | 0 (not detected) |
| City Of Katy | 25,253 | 2.7 ppb |
Next steps for Houston, TX
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Harris County Mud 144 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. Systems that went over once often dip back under; here is what that means.