Mount Sylvan Water System, 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.
Mount Sylvan Water System at a glance
Mount Sylvan Water System serves about 1,056 people through 352 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Smith County, Texas. EPA system ID: TX2120034; phone on file: 713-574-5953. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Mount Sylvan Water System'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 Mount Sylvan Water System 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) |
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. Mount Sylvan Water System's reported as 0 (not detected) sits at the 28th percentile in Texas and the 27th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
35 other systems share Smith County; 10 of them have a higher latest lead result than Mount Sylvan Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Tyler | 107,000 | 0 (not detected) |
| Southern Utilities | 69,735 | 1.57 ppb |
| Lindale Rural Wsc | 14,781 | 0 (not detected) |
| City Of Whitehouse | 9,571 | 0 (not detected) |
| Walnut Grove Wsc | 8,775 | 0 (not detected) |
| City Of Lindale | 6,313 | 0 (not detected) |
| Dean Wsc | 5,907 | 0 (not detected) |
| Jackson Wsc | 5,862 | 0 (not detected) |
| Sand Flat Wsc | 4,569 | 0 (not detected) |
| City Of Bullard | 4,500 | 0 (not detected) |
Your move
Look up your address in Mount Sylvan Water System'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 Mount Sylvan Water System 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Small systems behave differently: why small systems go over more often.