Green Lake Estates Water Supply, TX
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Green Lake Estates Water Supply serves about 66 people through 22 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Limestone County, Texas. EPA system ID: TX1470034; phone on file: 903-822-3275. They can tell you what your service line is made of and whether they pay to replace it.
Green Lake Estates Water Supply's lead record
That is down 6.7 ppb from 6.7 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Green Lake Estates Water Supply is 17.4 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 6.7 ppb |
| 2025 | 17.4 ppb over 15 |
| 2021 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 0.82 ppb |
Against other Texas systems
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. Green Lake Estates Water Supply's reported as 0 (not detected) sits at the 3rd percentile in Texas and the 6th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
17 other systems share Limestone County; 4 of them have a higher latest lead result than Green Lake Estates Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Mexia | 7,459 | 2.07 ppb |
| City Of Groesbeck | 4,250 | 0 (not detected) |
| Point Enterprise Wsc | 2,388 | 0 (not detected) |
| Prairie Hill Wsc | 2,150 | 0 (not detected) |
| White Rock Wsc 2 Forest Glade | 1,968 | 0 (not detected) |
| Slc Wsc | 1,749 | 8 ppb |
| City Of Coolidge | 786 | 0 (not detected) |
| Bistone Municipal Water Supply | 768 | 0 (not detected) |
| Shiloh Wsc | 615 | 0 (not detected) |
| White Rock Wsc 3 West Lake Mexia | 602 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Collinsville, 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 Green Lake Estates Water Supply 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. More in what a past exceedance means today.