Well water testing labs in Bexar 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.
4 accredited labs listed in Bexar 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 |
|---|---|---|---|---|
| Alamo Analytical Laboratories, Ltd. | San Antonio | – | Call | (210) 340-8121 |
| San Antonio Metropolitan Health District | San Antonio | Yes | Call | (210) 207-8887 |
| San Antonio Testing Laboratory, LLC | San Antonio | Yes | Call | (210) 229-9920 |
| Wallgren Environmental Services dba Pollution Control Services | Universal City | Yes | Call | (210) 340-0343 |
Alamo Analytical Laboratories, Ltd.
10526 Gulfdale Street, San Antonio, TX 78216 · map (OpenStreetMap)
Phone: (210) 340-8121
Lead & copperWater quality parameters
San Antonio Metropolitan Health District
2303 SE Military Drive, San Antonio, TX 78223 · map (OpenStreetMap)
Phone: (210) 207-8887
Bacteria (total coliform / E. coli)
San Antonio Testing Laboratory, LLC
1610 South Laredo Street, San Antonio, TX 78207 · map (OpenStreetMap)
Phone: (210) 229-9920
Bacteria (total coliform / E. coli)Lead & copperWater quality parameters
Wallgren Environmental Services dba Pollution Control Services
1532 Universal City Boulevard, Suite 100, Universal City, TX 78148 · map (OpenStreetMap)
Phone: (210) 340-0343
Bacteria (total coliform / E. coli)Lead & copperWater quality parameters
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