Laboratories for water treatment plants have evolved from basic wet chemistry to advanced microbiological analytical facilities. EE&T has remained at the forefront of laboratory design during this evolution process. We have designed water quality laboratories ranging in size from 1,000 ft2 to over 6,000 ft2. Advanced water quality laboratories designed by EE&T include gas chromatographs, TOC analyzers, wet chemistry, nutrients analyses, and analyses for Giardia and Cryptosporidium.