Stillwater Estates, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (monitoring period 2023-2025). 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.
Who runs the water here
Stillwater Estates serves about 120 people through 40 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Montgomery County, Texas. EPA system ID: TX1700677; phone on file: 936-825-5100. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 2 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Stillwater Estates is 2 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2022 | 0 (not detected) |
How Stillwater Estates 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. Stillwater Estates's 2 ppb sits at the 82nd percentile in Texas and the 70th nationally (higher means more lead).
Nearby utilities
332 other systems share Montgomery County; 31 of them have a higher latest lead result than Stillwater Estates. 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) |
Next steps for Navasota, TX
Test your own tap with a certified lab first-draw sample; Navasota, 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 Stillwater Estates 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. Size matters more than most people expect: small vs large water systems.