Texas Well Water Testing Labs

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Well water testing labs in Harris 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.

7 accredited labs listed in Harris 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
A & B Environmental Services, Inc.	Houston	Yes	Call	(713) 453-6060
ALS Laboratory Group, Environmental Services Division – Houston, Texas	Houston	–	Call	(281) 530-5656
City of Houston Health Department, Bureau of Laboratory Services	Houston	Yes	Call	(832) 393-3939
Envirodyne Laboratories, Inc.	Houston	Yes	Call	(281) 568-7880
Eurofins EMLab P&K – Houston	Houston	Yes	Call	(281) 940-2580
R&C Joy, Inc.	Katy	Yes	Call	(281) 858-5988
Water Utility Services, Inc.	Spring	Yes	Call	(281) 290-0704

A & B Environmental Services, Inc.

10100 East Freeway, Suite 100, Houston, TX 77029 · map (OpenStreetMap)

Phone: (713) 453-6060

Bacteria (total coliform / E. coli)Lead & copperWater quality parameters

Source: TCEQ PWS Lab Map Table (Map ID 1) · Last checked Oct 28, 2026

ALS Laboratory Group, Environmental Services Division – Houston, Texas

10450 Stancliff Road, Suite 210, Houston, TX 77099 · map (OpenStreetMap)

Phone: (281) 530-5656

Lead & copper

Source: TCEQ PWS Lab Map Table (Map ID 4) · Last checked Oct 28, 2026

City of Houston Health Department, Bureau of Laboratory Services

2250 Holcomb Boulevard, Houston, TX 77030 · map (OpenStreetMap)

Phone: (832) 393-3939

Bacteria (total coliform / E. coli)

Source: TCEQ PWS Lab Map Table (Map ID 23) · Last checked Oct 28, 2026

Envirodyne Laboratories, Inc.

11011 Brooklet Drive, Suite 230, Houston, TX 77099 · map (OpenStreetMap)

Phone: (281) 568-7880

Bacteria (total coliform / E. coli)Lead & copperWater quality parameters

Source: TCEQ PWS Lab Map Table (Map ID 39) · Last checked Oct 28, 2026

Eurofins EMLab P&K – Houston

10900 Brittmoore Park Drive, Suite G, Houston, TX 77041 · map (OpenStreetMap)

Phone: (281) 940-2580

Bacteria (total coliform / E. coli)

Source: TCEQ PWS Lab Map Table (Map ID 44) · Last checked Oct 28, 2026

R&C Joy, Inc.

19020 West Little York Road, Katy, TX 77449 · map (OpenStreetMap)

Phone: (281) 858-5988

Bacteria (total coliform / E. coli)

Source: TCEQ PWS Lab Map Table (Map ID 60) · Last checked Oct 28, 2026

Water Utility Services, Inc.

21615 Rhodes Road, Spring, TX 77388 · map (OpenStreetMap)

Phone: (281) 290-0704

Bacteria (total coliform / E. coli)

Source: TCEQ PWS Lab Map Table (Map ID 79) · Last checked Oct 28, 2026

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