Montgomery County Mud 9, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 0.96 ppb (monitoring period 2022-2024). 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.
Who runs the water here
Montgomery County Mud 9 serves about 5,949 people through 1,983 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Montgomery County, Texas. EPA system ID: TX1700220; phone on file: 713-227-1359. They can tell you what your service line is made of and whether they pay to replace it.
Montgomery County Mud 9's lead record
Against the period ending 2021 (0.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Montgomery County Mud 9 is 0.96 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.96 ppb |
| 2021 | 0.7 ppb |
| 2021 | 0.55 ppb |
| 2020 | 0.93 ppb |
| 2017 | 0 (not detected) |
How Montgomery County Mud 9 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. Montgomery County Mud 9's 0.96 ppb sits at the 63rd percentile in Texas and the 50th nationally (higher means more lead).
Neighbouring systems
332 other systems share Montgomery County; 86 of them have a higher latest lead result than Montgomery County Mud 9. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Conroe | 113,912 | 0 (not detected) |
| Porter Special Utility District | 26,388 | 0.59 ppb |
| Montgomery Trace Water System | 25,917 | 0.41 ppb |
| Montgomery County Mud 46 | 24,399 | 2.31 ppb |
| Montgomery County Mud 47 | 24,171 | 0.7 ppb |
| Montgomery County Mud 67 | 16,821 | 0.83 ppb |
| Montgomery County Mud 60 | 15,036 | 3.16 ppb |
| New Caney Mud | 14,307 | 1.54 ppb |
| City Of Willis | 14,133 | 0.7 ppb |
| Southern Montgomery County Mud | 13,372 | 0 (not detected) |
What to do in your house
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 Montgomery County Mud 9 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. Size matters more than most people expect: small vs large water systems.