Pattison Wsc, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 ppb (monitoring period 2023-2023). 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.
About Pattison Wsc
Pattison Wsc serves about 1,650 people through 550 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: TX2370005; phone on file: 281-934-2475. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Pattison Wsc is 1.6 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.6 ppb |
| 2022 | 1 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0.5 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
How Pattison Wsc 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. Pattison Wsc's 1.6 ppb sits at the 77th percentile in Texas and the 65th nationally (higher means more lead).
Nearby utilities
41 other systems share Waller County; 4 of them have a higher latest lead result than Pattison Wsc. 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
Test your own tap with a certified lab first-draw sample; Pattison, 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 Pattison Wsc 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. The action level is dropping - the 10 ppb rule from 2027.