San Antonio Testing Laboratory LLC is an independent, private, state-of-the-art testing facility that provides a wide variety of environmental and industrial analytical services.
Tailored for private, corporate, and public needs, we offer fast response times and rigorous quality assurance. We are proudly hispanic and woman owned, as well as locally owned and operated.


SATL has been assisting clients with routine testing to large scale contracts since 1987. Our extensive experience paired with up-to-date technologies and techniques, allow us to focus on client satisfaction and ever changing regulatory requirements, academic discoveries, and industry innovations. We take pride in our thorough quality control and assurance to ensure all data is accurate and meets strict protocols and inspections. To ensure accurate reports, this includes following sample collection, container, preservation, preparation, cleaning, and method standards from USEPA SW-846 and USEPA 600/4-79-020.


If you would like more information or have any questions, please contact us.


Texas Commission on Environmental Quality, TCEQ, NELAP certified laboratory. TNI approved proficiency test sample for Water Pollution -Water Supply and Solid Waste matrices.

Certification No. T104704360-20-24


HUB: Historically Under Utilized Business Program Minority and Woman Owned Business
State of Texas
Certificate/VID No.1471089620100

Small, Minority, Woman Owned, Hispanic-American, Disadvantaged Business
South Central Texas Regional Certification Agency
Certificate No. 220098942

Marcela Gracia Hawk


​BBA Management, Pan American University


Over thirty years of financial, managerial, and personnel administration experience with more than twenty years laboratory management experience. Past Vice-Chairman and Program Director for the Alamo Laboratory Analyst Chapter of the Texas Water Utilities Association. Member of the Texas Water Utilities Association and San Antonio Manufacturer's Association.

Richard Hawk

General Manager

Northern Michigan University

Thirty years experience in laboratory management, operations and administration. Past President of the Alamo Laboratory Analyst Association. Past Chairman of the Lab Analyst's Section of the Texas Water Utilities Association and former Board Member for the San Antonio Manufacturer's Association.


Laboratory Manager

Sairam Abburu


MS, The University of Texas at San Antonio


In his multi-faceted role, Sai utilizes his 25 years of experience in environmental laboratory management & operations, project management, and quality management. He has laboratory experience in extraction and analysis of organics and inorganic pollutants as well as various analytical instrumentation including GC, GC/MS, HPLC, ICP, ICP-MS, and IC. Additionally, he is extensively knowledgable on QA/QC procedures, including NELAP & TNI standards, EPA SW-846, and various wastewater, drinking water and general chemistry methods. Sai is especially knowledgeable on drinking water regulations with respect to public water systems.

Quality Assurance Manager

Charles Morrow


BS, Purdue University


Charles interacts with clients and regulatory agencies in regards to technical reviews and quality assurance. With 35 years of experience, he has served many roles in various environmental laboratories, including analyst, Technical Project Manager, Quality Assurance Director, and Laboratory Director. Additionally, he has hands-on experience with many analytical instruments such as the GC/MS, GC, ICP, and HPLC.