Texas Department of State Health Services / South Texas Laboratory
- Certification
- State certified list checked September 29, 2026
- Certificate
- T104704315 Texas program
- Tests listed
- 1 Coliform Bacteria
- Homeowner samples
- Call to ask not listed on the record
About Texas Department of State Health Services / South Texas Laboratory
Texas Department of State Health Services / South Texas Laboratory is a state laboratory in Harlingen, TX (Cameron County). It is on the Texas drinking water program's list of certified laboratories (certificate T104704315), and we last checked the list on September 29, 2026.
The record does not say whether it takes samples from homeowners. Some certified labs only work with public water systems, so call before you collect a sample.
Before you go: Accredited by the TCEQ Texas Laboratory Accreditation Program (NELAP) for drinking water analyses (lab code T104704315): Microbiology. Accreditation scope current through 2027-03-31.
This profile is built from the official state list of certified drinking water laboratories, checked on September 29, 2026. Well Water Insider does not rate or endorse labs. Run this lab? Claim the profile to add prices, turnaround times, hours and a description.
Certification and services
State certified- Certification number
- T104704315
- Certified by
- Texas drinking water program
- Certified for
- Microbiology
- Lab type
- State
- Last verified
- September 29, 2026
Listed on the official state certified laboratory list.
How to test your water here
How this lab takes samples, based on its listing. Call to confirm hours, bottles and prices.
Published lab fees in Texas: $20 for a bacteria test and $15 for nitrate. City utility labs charge $20 for bacteria (Wichita Falls, Midland); Texas A&M AgriLife screenings cover bacteria, nitrate and salinity for $15 (a screening, not a certified test). Prices at this lab may differ.
- 1
Call for the right bottles
Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.
- 2
Collect from a cold tap before treatment
Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.
- 3
Keep it cold and deliver within 24 hours
Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.
- 4
Read the report against the standards
Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.
Tests this lab is listed for
From the state certification list and the lab's own listing. Ask which ones it runs for homeowners.
Coliform Bacteria
Total coliform and E. coli. The test the CDC recommends every year for every private well. Learn more
Location
1301 South Rangerville Road, Harlingen, TX 78552
Lab address
Questions about Texas Department of State Health Services / South Texas Laboratory
Is Texas Department of State Health Services / South Texas Laboratory state certified?
Yes. It is on the Texas list of laboratories certified for drinking water testing, last checked September 29, 2026.
What can Texas Department of State Health Services / South Texas Laboratory test well water for?
Its listing covers coliform bacteria. Call to confirm prices and which tests it runs for private well owners.
Can I bring my own well water sample?
The listing does not say. Some certified labs only test for public water systems, so call before collecting a sample.
How do I contact Texas Department of State Health Services / South Texas Laboratory?
Call (956) 364-8748 and visit the lab's website. The address is 1301 South Rangerville Road, Harlingen, TX 78552.