Grand Harbor 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.
Who runs the water here
Grand Harbor Wsc serves about 360 people through 120 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Wise County, Texas. EPA system ID: TX2490070; phone on file: 817-680-9449. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Grand Harbor Wsc is 11.4 ppb across 6 monitoring periods, none of them over 15 ppb (2 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 10.3 ppb over 10 |
| 2019 | 5.76 ppb |
| 2018 | 11.4 ppb over 10 |
How Grand Harbor 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. Grand Harbor Wsc's reported as 0 (not detected) sits at the 17th percentile in Texas and the 20th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
42 other systems share Wise County; 11 of them have a higher latest lead result than Grand Harbor Wsc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Decatur Water Plant | 9,087 | 0 (not detected) |
| City Of Bridgeport | 6,083 | 0 (not detected) |
| West Wise Sud | 3,909 | 0 (not detected) |
| City Of Runaway Bay | 2,458 | 0 (not detected) |
| Chisholm Springs | 2,049 | 0 (not detected) |
| City Of Boyd | 2,044 | 0 (not detected) |
| City Of Rhome | 1,680 | 0 (not detected) |
| City Of Chico | 1,596 | 0 (not detected) |
| City Of Alvord | 1,360 | 0 (not detected) |
| City Of Newark | 1,232 | 0 (not detected) |
What to do in your house
Look up your address in Grand Harbor 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 Grand Harbor 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. 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.