Well water testing labs in Cameron County, TX
Independent directory. Listings come from the TCEQ Public Water System Lab Map Table (updated 03/26/2026). These labs are accredited for public drinking-water samples; call first to confirm they accept private-well samples, which tests they run, sample bottles, drop-off hours and price.
1 accredited lab listed in Cameron County. Bacteria tests usually need a sterile bottle from the lab and delivery within about 30 hours, so check the lab's sample rules before you collect.
Quick answer
| Lab | City | Bacteria | Published price | Phone |
|---|---|---|---|---|
| Texas Department of State Health Services South Texas Laboratory | Harlingen | Yes | Call | (956) 364-8746 |
Texas Department of State Health Services South Texas Laboratory
1301 South Rangerville Road, Harlingen, TX 78552 · map (OpenStreetMap)
Phone: (956) 364-8746
Bacteria (total coliform / E. coli)
Not in this county? See all counties or read how to test your well.