Garden Oaks, TX
Exceeded the action level in the past
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 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 Garden Oaks
Garden Oaks serves about 309 people through 103 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Guadalupe County, Texas. EPA system ID: TX0940030; phone on file: 737-376-2534. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Garden Oaks's lead record
That is down 3.2 ppb from 3.2 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Garden Oaks is 32.8 ppb across 3 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 3.2 ppb |
| 2016 | 32.8 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. Garden Oaks's reported as 0 (not detected) sits at the 16th percentile in Texas and the 19th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
13 other systems share Guadalupe County; 7 of them have a higher latest lead result than Garden Oaks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Green Valley Sud | 52,497 | 1.8 ppb |
| City Of Schertz | 41,948 | 0 (not detected) |
| Springs Hill Sud | 35,541 | 1.12 ppb |
| City Of Seguin | 32,736 | 1.45 ppb |
| Crystal Clear Sud | 20,766 | 1.6 ppb |
| City Of Cibolo | 20,331 | 1.1 ppb |
| City Of Marion | 1,971 | 5 ppb |
| Shady Meadows Mobile Home Park | 64 | 0 (not detected) |
| Lago Vista Water System | 54 | 0 (not detected) |
| Memory Lane Mhp | 30 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Austin, 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 Garden Oaks 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. The lead result guide covers how utilities pick the homes they sample. Why an old exceedance still matters: over the limit before, under it now.