Lake Buchanan, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.33 ppb (monitoring period 2024-2026). 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.
About Lake Buchanan
Lake Buchanan serves about 2,484 people through 828 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws surface water, in Llano County, Texas. EPA system ID: TX1500037; 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.
Lead results over time
Against the period ending 2023 (1.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lake Buchanan is 1.7 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.33 ppb |
| 2023 | 1.7 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. Lake Buchanan's 1.33 ppb sits at the 72nd percentile in Texas and the 61st nationally (higher means more lead).
Neighbouring systems
15 other systems share Llano County; 8 of them have a higher latest lead result than Lake Buchanan. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Kingsland Wsc | 12,975 | 0.91 ppb |
| City Of Horseshoe Bay | 12,729 | 4.11 ppb |
| City Of Llano | 3,352 | 2.32 ppb |
| City Of Sunrise Beach Village | 791 | 1.7 ppb |
| Llano County Mud 1 | 747 | 1.11 ppb |
| Pecan Utilities Oak Ridge Subdivision | 588 | 0 (not detected) |
| 3 G Wsc | 550 | 3.89 ppb |
| Kingsland Wsc Comanche Rancherias | 537 | 2.48 ppb |
| Paradise Point Subdivision | 528 | 2.45 ppb |
| Buchanan Lake Village | 425 | 6.81 ppb |
Next steps for Austin, TX
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 Lake Buchanan 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. The action level is dropping - the 10 ppb rule from 2027.