Tonkawa Wsc, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.37 ppb (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. 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.
Tonkawa Wsc at a glance
Tonkawa Wsc serves about 90 people through 45 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Travis County, Texas. EPA system ID: TX2270112. Ask the utility on your bill for your address in their service line inventory.
Tonkawa Wsc's lead record
Against the period ending 2022 (2.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Tonkawa Wsc is 2.3 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.37 ppb |
| 2022 | 2.3 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. Tonkawa Wsc's 1.37 ppb sits at the 73rd percentile in Texas and the 61st nationally (higher means more lead).
Other water systems in Travis County
87 other systems share Travis County; 28 of them have a higher latest lead result than Tonkawa Wsc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Austin Water & Wastewater | 1,115,323 | 0 (not detected) |
| City Of Pflugerville | 63,464 | 1.1 ppb |
| Travis County Wcid 17 | 45,165 | 2.95 ppb |
| Manville Wsc | 39,648 | 1.41 ppb |
| West Travis County Public Utility Agency | 35,664 | 2.2 ppb |
| Windermere Community | 21,231 | 1.94 ppb |
| City Of Manor | 19,620 | 1.2 ppb |
| Wells Branch Mud 1 | 18,015 | 0 (not detected) |
| Northtown Mud | 11,520 | 0.44 ppb |
| North Austin Mud 1 | 11,133 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Spicewood, 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 Tonkawa 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.