Is Jarrell, TX tap water safe?
The short answer
2 of the 4 utilities serving Jarrell have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Texas’s records: Sonterra MUD and City of Georgetown.
Sonterra MUD, which serves the most people here, has 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 23.3 ppb, above EPA’s health benchmark. 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 Jarrell’s ZIP codes, from EPA’s estimates.
- Open report
Sonterra MUD
Texas · serves 16,614 people · about 340 in Jarrell
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 23.3 ppb, above EPA’s health benchmark.
2 health-based violations since 2016
- Open report
City of Georgetown
Texas · serves 191,639 people · about 240 in Jarrell
1 result above the legal limit, 2 results above EPA’s new limit, which takes effect in 2029, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 53.1 ppb, above the legal limit.
1 health-based violation since 2016
- Open report
Jarrell Schwertner WSC
Texas · serves 9,681 people · about 120 in Jarrell
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 33.5 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
City of Jarrell
Texas · serves 3,450 people · under 100 in Jarrell
1 result above the health goal. The worst: Lead at 1.5 ppb, above the health goal.
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 Sonterra MUD’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Water testing near Jarrell
The 3 labs Texas certifies closest to Jarrell, 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 24 miles
Certified for lead and copper
Texas Department of State Health Services Laboratory Services Section
Austin, TX · about 29 miles
Certified for bacteria, lead and copper
Aqua-Tech Laboratories, Inc.
Austin, TX · about 39 miles
Certified for bacteria, lead and copper
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 TexasWhich ZIP codes are in Jarrell: 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 Jarrell
Other towns in Williamson County with a page of their own.
What to do next
- Read Sonterra MUD’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water