City Of Round Rock, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 5.05 ppb (monitoring period 2021-2023). 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.
City Of Round Rock at a glance
City Of Round Rock serves about 130,662 people through 37,492 service connections, which makes it a very large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Williamson County, Texas. EPA system ID: TX2460003; phone on file: 512-218-5410. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 3.05 ppb from 2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for City Of Round Rock is 5.05 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 5.05 ppb |
| 2020 | 2 ppb |
| 2020 | 3.4 ppb |
| 2018 | 4.3 ppb |
| 2018 | 3.4 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. City Of Round Rock's 5.05 ppb sits at the 97th percentile in Texas and the 91st nationally (higher means more lead).
Nearby utilities
38 other systems share Williamson County; 0 of them have a higher latest lead result than City Of Round Rock. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Georgetown | 191,639 | 4.81 ppb |
| City Of Leander | 98,330 | 1.1 ppb |
| City Of Cedar Park | 86,939 | 2.77 ppb |
| Jonah Water Sud | 29,861 | 1.55 ppb |
| City Of Hutto | 29,580 | 0 (not detected) |
| City Of Taylor | 20,622 | 1.93 ppb |
| Brushy Creek Mud | 18,314 | 1.28 ppb |
| Sonterra Mud | 16,614 | 0.43 ppb |
| Jarrell Schwertner Wsc | 9,681 | 0 (not detected) |
| City Of Liberty Hill | 8,777 | 2.11 ppb |
Next steps for Round Rock, TX
Test your own tap with a certified lab first-draw sample; Round Rock, 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 City Of Round Rock 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. Size matters more than most people expect: small vs large water systems.