Is Lockhart, TX tap water safe?
The short answer
2 of the 5 utilities serving Lockhart have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Texas’s records: Maxwell SUD and Goforth SUD.
City of Lockhart, 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 54.7 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 Lockhart’s ZIP codes, from EPA’s estimates.
- Open report
City of Lockhart
Texas · serves 18,800 people · about 1,300 in Lockhart
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 54.7 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Aqua WSC
Texas · serves 86,325 people · about 250 in Lockhart
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 83 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Maxwell SUD
Texas · serves 16,104 people · under 100 in Lockhart
1 result above the legal limit and 2 results above the health goal. The worst: Total trihalomethanes (TTHM) at 103 ppb, above the legal limit.
24 health-based violations since 2016
- Open report
Creedmoor Maha WSC
Texas · serves 8,907 people · under 100 in Lockhart
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 65.5 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Goforth SUD
Texas · serves 34,893 people · under 100 in Lockhart
1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 69.2 ppb, above the legal limit.
2 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Lockhart’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 Lockhart
The 3 labs Texas certifies closest to Lockhart, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Edwards Aquifer Research & Data Center, Texas State University
San Marcos, TX · about 17 miles
Certified for bacteria
Aqua-Tech Laboratories, Inc.
Austin, TX · about 21 miles
Certified for bacteria, lead and copper
Texas Department of State Health Services Laboratory Services Section
Austin, TX · about 31 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 TexasZIP codes in Lockhart
Which ZIP codes are in Lockhart: 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 Lockhart
Towns nearby with a page of their own.
What to do next
- Read City of Lockhart’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