Tetra Tech is helping treat wastewater to drinking water standards—or in one case, beer-making standards. 

Tetra Tech collaborated with WateReuse Association, Xylem, and GE to design, build, and operate a direct potable reuse pilot purification process that can treat reclaimed effluent wastewater to comply with U.S. Environmental Protection Agency’s (EPA) drinking water standards. At the Falkenburg Wastewater Treatment Facility in Hillsborough County, Florida, Tetra Tech’s innovative design for the pilot system puts water through an intense purification process so that Tampa Bay brewers can use the purified water to create beer. The beer made from the purified water will be judged at the annual WateReuse Symposium on September 11, 2016, in Tampa, Florida.

Tetra Tech assisted in connecting and operating the full advanced treatment (FAT) process, which consisted of ultrafiltration (UF), reverse osmosis (RO), and advanced oxidation with ultraviolet light (UV-AOP). These processes, which were operated in batch mode over the course of a week, produced approximately 1,000 gallons of purified water. The purified water was tested for primary and secondary drinking water standards, as well as non-regulated microconstituents, pharmaceuticals, and personal care products. 

Results from the water quality monitoring revealed that the purified water produced from the pilot purification process met all principal standard maximum contaminant levels (MCLs) set at the federal and state levels. Additionally, the purified water met all numerical secondary drinking water standards and MCLs. The federal drinking water MCLs are set up by the U.S. EPA and adopted by the Florida Department of Environmental Protection.

Learn more about creating beer with purified water by watching the WateReuse Florida video.