Laboratory Services

Laboratory Services

The San Antonio River Authority (River Authority) Regional Environmental Laboratory offers analytical testing services throughout Texas for non-potable water, solid and chemical materials, and environmental water quality monitoring efforts. The laboratory began operating in 1966 with the sole focus of supporting River Authority wastewater treatment plant operations. Through the decades, the laboratory has expanded its scope of testing services to include surface water, stormwater, and molecular science bacterial source tracking. In 2008, the River Authority Regional Environmental Laboratory obtained certification from the National Environmental Laboratory Accreditation Program (NELAP). As an accredited laboratory, our data is used by the Texas Commission on Environmental Quality (TCEQ) and other regulatory agencies for permitting, compliance, remediation, and water quality assessments.



Current lab customers include:

  • Municipalities
  • Wastewater treatment plants
  • Consultants
  • Other laboratories
  • Storm Water

Please contact the laboratory at (210) 302-3649 or [email protected] for sample containers and additional information.

Staff Qualifications

Our scientists have backgrounds in Chemistry, Biology, Environmental Science, or a related scientific discipline. All scientists are certified through Texas Water Utility Association, and may also hold Certified Environmental Scientist or Texas Master Naturalist certifications. In addition, many of our scientists are members of professional organizations to stay abreast of developing technologies and regulations. These organizations include, but are not limited to, The NELAC Institute, Alamo Laboratory Analyst Chapter, Association of Laboratory Managers, American Chemical Society, and National Registry of Environmental Professionals.

Laboratory Accreditation

The San Antonio River Authority Environmental Sciences Laboratory is accredited by the Texas Commission on Environmental Quality for the analysis of Non-Potable water and Solid and Chemical Materials. Please refer to our Fields of Accreditation for Analysis that River Authority is accredited to perform.

Fields of Accreditation

TCEQ Certification 2023

Sample Delivery

It is preferred that samples be submitted by 3 p.m. to assure same day set-up. Samples submitted after 3 p.m. are subject to a $25 late sample submission fee, per sample. If samples will be delivered after 3 p.m. please call the Laboratory Services Coordinator at (210) 302-3649 or [email protected] to notify the laboratory of the expected arrival time.

Lab Hours of Operation

8 a.m. – 5 p.m. Monday thru Friday
Closed from noon to 1 p.m.

Weekend and Holidays

The laboratory is closed on weekends and holidays.

Holiday Closing Schedule

The San Antonio River Authority Environmental Science Department Laboratory will be closed on the following dates:

  • Independence Day: Tuesday, July 4, 2023
  • Labor Day: Monday, September 4, 2023
  • Thanksgiving Day: Thursday, November 23, 2023
  • Thanksgiving Friday: Friday, November 24, 2023
  • Christmas: Monday, December 25, 2023
  • Christmas Tuesday (Veteran's Day observed): Tuesday, December 26, 2023
  • New Year's Day: Monday, January 1, 2024
  • Martin Luther King, Jr. Day: Monday, January 15, 2024
  • President's Day: Monday, February 19, 2024
  • San Jacinto Day: Friday, April 26, 2024
  • Memorial Day: Monday, May 27, 2024
  • Juneteenth (Freedom Day): Wednesday, June 19, 2024

(Sample Delivery Entrance is located on Atlanta Street)
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Parking is available along Atlanta Street

If parking is not available on Atlanta Street; visitor parking is available in the building main parking area. You can then walk around the building to the laboratory entrance.

Parking Lot

Sample Delivery Entrance

Located on the Northeast Side of the building (Atlanta Street)

delivery entrance
Delivery Entrance 2