Chappell Hill Wsc, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Chappell Hill Wsc
Chappell Hill Wsc serves about 645 people through 219 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 Washington County, Texas. EPA system ID: TX2390003; phone on file: 866-643-3472. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Chappell Hill Wsc is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
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. Chappell Hill Wsc's reported as 0 (not detected) sits at the 22nd percentile in Texas and the 24th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Washington County
9 other systems share Washington County; 4 of them have a higher latest lead result than Chappell Hill Wsc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Brenham | 18,469 | 0 (not detected) |
| Northeast Washington County | 3,219 | 2.17 ppb |
| Central Washington County Wsc | 2,270 | 0 (not detected) |
| Oak Hill Fwsd 1 | 445 | 0 (not detected) |
| City Of Burton | 315 | 0 (not detected) |
| Gun & Rod Estates | 219 | 0.76 ppb |
| Starlite Mobile Home Park | 195 | 2.62 ppb |
| Holiday Oaks Subdivision | 85 | 0 (not detected) |
| Lake Forest Water System | 67 | 6.53 ppb |
Next steps for Dripping Springs, TX
Look up your address in Chappell Hill Wsc's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Chappell Hill 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. Small systems behave differently: why small systems go over more often.