The Oaks Wsc, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
The Oaks Wsc serves about 1,191 people through 397 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Bexar County, Texas. EPA system ID: TX0150399; phone on file: 210-698-8449. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
The highest 90th-percentile result EPA holds for The Oaks Wsc is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
How The Oaks Wsc compares
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. The Oaks Wsc's reported as 0 (not detected) sits at the 29th percentile in Texas and the 28th 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 The Oaks Wsc. 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 |
| Jbsa Sam Houston | 37,563 | 0 (not detected) |
| 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 |
What to do in your house
Look up your address in The Oaks Wsc's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask The Oaks Wsc 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. A zero today does not rule out a jump later - the rules are tightening in 2027.