Twin Oaks Ranch, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.11 ppb (monitoring period 2026-2026). 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.
Who runs the water here
Twin Oaks Ranch serves about 153 people through 51 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Smith County, Texas. EPA system ID: TX2120056; phone on file: 903-882-5591. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 1.11 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Twin Oaks Ranch is 1.11 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.11 ppb |
| 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. Twin Oaks Ranch's 1.11 ppb sits at the 67th percentile in Texas and the 58th nationally (higher means more lead).
Nearby utilities
35 other systems share Smith County; 8 of them have a higher latest lead result than Twin Oaks Ranch. 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
Test your own tap with a certified lab first-draw sample; Lindale, 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 Twin Oaks Ranch 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. Size matters more than most people expect: small vs large water systems.