Mountain Wsc, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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 Mountain Wsc
Mountain Wsc serves about 2,400 people through 802 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 Coryell County, Texas. EPA system ID: TX0500020; phone on file: 254-865-7113. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Mountain Wsc's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mountain Wsc is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
How Mountain 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. Mountain Wsc's reported as 0 (not detected) sits at the 36th percentile in Texas and the 32nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Coryell County
11 other systems share Coryell County; 3 of them have a higher latest lead result than Mountain Wsc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Copperas Cove | 41,669 | 0 (not detected) |
| City Of Gatesville | 16,135 | 0 (not detected) |
| Coryell City Water Supply District | 6,042 | 0 (not detected) |
| Multi-County Wsc | 3,631 | 2.35 ppb |
| Fort Gates Wsc | 2,500 | 0 (not detected) |
| Topsey Wsc | 963 | 0.6 ppb |
| The Grove Wsc | 808 | 0 (not detected) |
| City Of Evant | 455 | 0 (not detected) |
| City Of Oglesby | 454 | 2.82 ppb |
| Flat Wsc | 180 | 0 (not detected) |
What to do in your house
Look up your address in Mountain 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 Mountain 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.