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Is Round Rock, TX tap water safe?

15 utilities serve Round Rock, by EPA’s records. Here is what EPA’s and Texas’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

3 of the 15 utilities serving Round Rock have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Texas’s records: Jonah Water SUD, Manville WSC and City of Georgetown.

City of Round Rock, which serves the most people here, has 1 result above the health goal. The worst: Lead at 5.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.

A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Round Rock’s ZIP codes, from EPA’s estimates.

5 more utilities in Round Rock

By EPA’s estimate, each serves fewer people in Round Rock than those above.

  • Paloma Lake MUD 2serves 2,265 people · about 1,400 in Round Rock · no health-based violations since 2016
  • Vista Oaks MUDserves 2,724 people · about 1,200 in Round Rock · no health-based violations since 2016
  • City of Georgetownserves 191,639 people · about 880 in Round Rock · 1 health-based violation since 2016
  • Tal Texserves 939 people · about 450 in Round Rock · no health-based violations since 2016
  • Walsh Ranch MUDserves 714 people · about 370 in Round Rock · no health-based violations since 2016

MUD stands for municipal utility district, a local water and sewer district common in Texas.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in City of Round Rock’s water, which serves the most people here. Another utility’s report names what handles its own results.

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Every claim, and more filters, in the full report

Water testing near Round Rock

A utility tests the water it sends out. A test of your own tap shows what your pipes add, and on a private well it is the only test there is. It takes a lab Texas certifies.

The 3 labs Texas certifies closest to Round Rock, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Integrity Testing, Inc.

    Austin, TX · about 10 miles

    Certified for lead and copper

    (512) 891-7777

  • Texas Department of State Health Services Laboratory Services Section

    Austin, TX · about 15 miles

    Certified for bacteria, lead and copper

    (512) 458-7318

  • Aqua-Tech Laboratories, Inc.

    Austin, TX · about 24 miles

    Certified for bacteria, lead and copper

    (512) 301-9559

Texas Well Owner Network, Texas A&M AgriLife Extension: Well Informed screening events, where well owners bring in water samples to be screened for common contaminants, followed by an hour-long session explaining the results. Upcoming events are on the network's calendar. Trainings, Texas Well Owner Network.

All 80 certified labs for Texas

ZIP codes in Round Rock

Which ZIP codes are in Round Rock: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: TCEQ, drinking water laboratories approved for public water system samples; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Round Rock

Other towns in Williamson County with a page of their own.

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