Rowlett Creek Laboratory

The mission of Rowlett Creek Laboratory is complete dedication to the production of high quality data at minimal cost and to providing a convenient service for the City of Garland and all internal departments.

For 25 years, the Rowlett Creek Laboratory has been conducting analytical services for both wastewater treatment plants, and various internal departments including Health and Electric.

Our staff, consisting of chemists and biologists, is fully conversant with prescribed regulatory agency procedures.  Most personnel are involved in the Texas Water Utilities Association Lab Analyst Section, which provides monthly updates on procedures and new technologies within the laboratory agenda.

More than 45,000 samples are analyzed annually in our state-of-the-art-equipped laboratory.

Analytical Capabilities

  • Organic analyses for Pesticides, PCB’s, Volatiles and Semivolatiles by Gas Chromatography (GC) and Gas Chromatography Mass Spectroscopy (GC / MS)
  • Automated wet chemistry by Technicon Autoanalyzer for Ammonia, Nitrate, Nitrite, TKN, Phosphorus, and Cyanide
  • Metals analyses by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS)
  • Classical wet chemistry - BOD, COD, TSS, TDS, VSS, and Microtox

Rowlett Creek Laboratory maintains a high commitment to quality assurance/quality control (QA / QC) by participating in the US EPA Discharge Monitoring Report Quality Assurance Study, in which unknown samples are analyzed and reported to the EPA, to check the laboratory for precision and accuracy.  Unknown check samples are also analyzed on a quarterly basis from an outside source.