Jbsa Sam Houston, 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.
Jbsa Sam Houston at a glance
Jbsa Sam Houston serves about 37,563 people through 2,610 service connections, which makes it a large system under EPA's size classes. It is federally owned and draws groundwater, in Bexar County, Texas. EPA system ID: TX0150116; phone on file: 210-247-8554. 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 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Jbsa Sam Houston is 69 ppb across 13 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 1 ppb |
| 2024 | 1 ppb |
| 2023 | 2 ppb |
| 2023 | 1 ppb |
| 2022 | 1 ppb |
| 2021 | 1 ppb |
| 2020 | 0 (not detected) |
| 2019 | 2 ppb |
| 2018 | 2.9 ppb |
| 2018 | 69 ppb over 15 |
| 2017 | 12 ppb over 10 |
| 2016 | 5.4 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. Jbsa Sam Houston's reported as 0 (not detected) sits at the 49th percentile in Texas and the 39th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
40 other systems share Bexar County; 28 of them have a higher latest lead result than Jbsa Sam Houston. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| San Antonio Water System | 2,643,729 | 1.6 ppb |
| City Of Converse | 29,709 | 0.5 ppb |
| East Central Sud | 26,137 | 1.5 ppb |
| Jbsa Lackland | 20,907 | 0 (not detected) |
| City Of Universal City | 20,119 | 0.5 ppb |
| Atascosa Rural Wsc | 13,857 | 2 ppb |
| City Of Selma | 11,418 | 0 (not detected) |
| Jbsa Randolph | 10,949 | 2 ppb |
| Fair Oaks Ranch Utilities | 9,768 | 2.2 ppb |
| City Of Live Oak | 8,724 | 1.48 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; San Antonio, 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 Jbsa Sam Houston 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. More in what a past exceedance means today.