40 Years. 4 Locations. Still Independent.

Employee-owned environmental testing rooted in Texas since 1986. We don't just run your samples. We know your permit, your operations, and your deadlines.

NELAP Accredited TCEQ DW Approved 4 Texas Locations Since 1986
Eastex laboratory in Coldspring, Texas
100+ years of combined laboratory experience

What We Do

Comprehensive environmental testing with the expertise your operations depend on.

TOC analyzer at Eastex laboratory

Regulatory Compliance

TCEQ reporting, DMR support, and pretreatment programs. 100+ years of combined experience navigating Texas water regulations.

Drinking water sample bottles under UV light

Drinking Water Testing

TCEQ DW-approved testing for public water systems. Lead and copper, disinfection byproducts, inorganics, and bacteriological analysis.

BOD analyzer with robotic dissolved oxygen probes

Process Testing

Operational testing to optimize treatment performance. BOD, TSS, ammonia, and process-critical parameters with fast turnaround.

Wastewater Testing

Complete TPDES permit compliance testing for wastewater treatment operations. Metals, nutrients, organics, and whole effluent toxicity.

Field Services

On-site sampling, courier pickup, and field testing across our Texas service area. We come to you.

PFAS Testing

EPA-approved methods for per- and polyfluoroalkyl substances. Supporting UCMR 5 compliance and emerging contaminant monitoring across Texas.

Industries We Serve

We know who you are, what you need, and what your deadlines look like.

Seal AQ400 analyzer used for MUD water testing

Municipal Utility Districts

We serve hundreds of MUDs across Texas. We understand your reporting calendar, your compliance requirements, and the pressure of getting results back on time.

Operations Companies

We work with operations companies who manage dozens of districts. We understand the volume, the deadlines, and the need for a lab that is as reliable as you are.

Public Water Systems

NELAP accredited and TCEQ DW approved. We handle drinking water compliance testing for public water systems across Texas, from routine monitoring to PFAS.

Engineering Firms

Engineering firms trust us for the testing behind their project work. Site assessments, remediation monitoring, permit applications, and defensible data.

Why Eastex

What makes us different is what makes us better for you.

01

Relationship-Driven

When you call Eastex, you talk to the people running your samples. Your lab team knows your permit, your operations, and your deadlines.

02

Texas-Focused

Four labs across Texas. TCEQ-fluent. We don't translate national procedures to local requirements. We've been doing this here for 40 years.

Eastex laboratory technician at work
03

Compliance Partner

We don't just test your water. Advisory capacity, DMR support, regulatory guidance, and the institutional knowledge that prevents problems before they happen.

Shimadzu analytical balance for precision measurement
04

Built to Last

40 years. In a market where labs change hands every few years, Eastex has been independent and Texas-based since 1986.

05

Employee-Owned

100% employee-owned since 2014. No private equity. No outside investors. The people doing the work are the owners.

Sample-handling instrument labeled THE MACHINE

4 Locations Across Texas

Regional presence. One standard of service.

Laboratory glassware in the Eastex sample preparation area
Headquarters

Coldspring

35 Eastex Ln
Coldspring, TX 77331
(936) 653-3249

East Texas

Nacogdoches

1119 S University Dr
Nacogdoches, TX 75961
(936) 569-8879

Greater Houston

Katy

633 E Fernhurst Dr, Ste 303
Katy, TX 77450
1-800-525-0508

Central Texas

Austin

12307 Deane Rd, Bldg B Unit 6
Manchaca, TX 78652
1-800-525-0508

Ready to Get Started?

Whether you're looking for a new lab partner or just have questions about testing requirements, we're here to help.

Monday through Friday, 8:00 AM to 5:00 PM