Windwood Oaks Water System, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 5.6 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Windwood Oaks Water System serves about 63 people through 21 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kerr County, Texas. EPA system ID: TX1330141; phone on file: 737-376-2534. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Windwood Oaks Water System's lead record
That is up 4.9 ppb from 0.7 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Windwood Oaks Water System is 5.6 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.6 ppb |
| 2025 | 0.7 ppb |
| 2024 | 1 ppb |
| 2024 | 0.8 ppb |
| 2023 | 2.1 ppb |
| 2022 | 3.7 ppb |
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. Windwood Oaks Water System's 5.6 ppb sits at the 98th percentile in Texas and the 92nd nationally (higher means more lead).
Nearby utilities
66 other systems share Kerr County; 1 of them has a higher latest lead result than Windwood Oaks Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Kerrville | 30,530 | 3.34 ppb |
| Ingram Water Supply | 5,955 | 1.1 ppb |
| Loma Vista Water System | 3,720 | 1.8 ppb |
| Four Seasons | 1,059 | 0 (not detected) |
| Southern Hills | 1,005 | 1.9 ppb |
| Kerrville Va Hospital | 1,000 | 2.24 ppb |
| Erlund Subdivision | 821 | 0.7 ppb |
| Guadalupe Heights Utility | 678 | 1.3 ppb |
| Ingram Oaks Retirement Community | 669 | 0 (not detected) |
| Oak Forest South Water Supply | 648 | 1.2 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 Windwood Oaks Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1548 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.