Emerald Estates, TX
Exceeded the action level in the past
Latest 90th-percentile lead: 5.5 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. 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.
About Emerald Estates
Emerald Estates serves about 49 people through 19 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in San Jacinto County, Texas. EPA system ID: TX2040069; phone on file: 713-569-2797. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 3.5 ppb from 9 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Emerald Estates is 1276.7 ppb across 10 monitoring periods, 3 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.5 ppb |
| 2025 | 9 ppb |
| 2024 | 4 ppb |
| 2023 | 3.44 ppb |
| 2022 | 8.8 ppb |
| 2022 | 6.1 ppb |
| 2021 | 7.4 ppb |
| 2021 | 32.9 ppb over 15 |
| 2020 | 25.6 ppb over 15 |
| 2020 | 1276.7 ppb over 15 |
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. Emerald Estates's 5.5 ppb sits at the 98th percentile in Texas and the 92nd nationally (higher means more lead).
Nearby utilities
30 other systems share San Jacinto County; 0 of them have a higher latest lead result than Emerald Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| San Jacinto Sud | 3,993 | 0 (not detected) |
| City Of Shepherd | 3,411 | 1.24 ppb |
| One Five O Wsc | 3,094 | 0 (not detected) |
| Dodge Oakhurst Wsc 2 | 2,500 | 0.57 ppb |
| Mercy Wsc | 2,458 | 0 (not detected) |
| Holiday Villages Of Livingston | 2,272 | 3.1 ppb |
| Pb & Sc Water Supply Corporation | 2,163 | 0 (not detected) |
| Cape Royale Utility District | 2,154 | 1.96 ppb |
| Waterwood Mud 1 | 1,446 | 4.8 ppb |
| Trails End Subdivision | 1,444 | 2.49 ppb |
Next steps for Huntsville, TX
Test your own tap with a certified lab first-draw sample; Huntsville, 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 Emerald Estates whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2999 ppb (copper action level 1,300 ppb).
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. Why an old exceedance still matters: over the limit before, under it now.