Is Spring Branch, TX tap water safe?
The short answer
2 of the 4 utilities serving Spring Branch have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Texas’s records: Clwsc Canyon Lake Shores and Sjwtx Triple Peak Plant.
Clwsc Canyon Lake Shores, which serves the most people here, has 1 result above the legal limit, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 117 ppb, above the legal limit.
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 Spring Branch’s ZIP codes, from EPA’s estimates.
- Open report
Clwsc Canyon Lake Shores
Texas · serves 44,196 people · about 200 in Spring Branch
1 result above the legal limit, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 117 ppb, above the legal limit.
6 health-based violations since 2016
- Open report
Sjwtx Triple Peak Plant
Texas · serves 32,973 people · under 100 in Spring Branch
1 result above the legal limit, 1 result above EPA’s new limit, which takes effect in 2029, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 45.1 ppb, above the legal limit.
3 health-based violations since 2016
- Open report
Cypress Cove WSC
Texas · serves 1,825 people · under 100 in Spring Branch
2 results above the health goal. The worst: Lead at 1.6 ppb, above the health goal.
No health-based violations since 2016
- Open report
Spring Branch Indian Hills Estates WSC
Texas · serves 579 people · under 100 in Spring Branch
2 results above the health goal. The worst: Lead at 0.7 ppb, above the health goal.
No 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 Clwsc Canyon Lake Shores’s water, which serves the most people here. Another utility’s report names what handles its own results.
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
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: Total trihalomethanes (TTHM), Lead, Arsenic
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: Total trihalomethanes (TTHM), Lead, Arsenic
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Total trihalomethanes (TTHM), Lead, Arsenic
Water testing near Spring Branch
The 3 labs Texas certifies closest to Spring Branch, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Wallgren Environmental Services dba Pollution Control Services
Universal City, TX · about 25 miles
Certified for bacteria, lead and copper
Alamo Analytical Laboratories, Ltd.
San Antonio, TX · about 25 miles
Certified for lead and copper
Edwards Aquifer Research & Data Center, Texas State University
San Marcos, TX · about 26 miles
Certified for bacteria
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 Spring Branch
Which ZIP codes are in Spring Branch: 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 Spring Branch
Other towns in Comal County with a page of their own.
What to do next
- Read Clwsc Canyon Lake Shores’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water