Hawaii’s state Capitol building in Honolulu and a Guam resort have contracted water treatment systems from VRTX in Schertz, Texas, a chemical-free water treatment company that specializes in cooling towers and evaporative condensers.

The Capitol, situated near two war memorials that draw tourists, wanted to save water and maintain a safe environment for visitors. The water treatment system allowed operators to increase the cycles of concentration from 2.1 to four, saving the facility an estimated 2.5 million gal of water annually, according to VRTX.

The Pacific Islands Club resort will convert its air-cooled system to a water-cooled one with VRTX’s nonchemical cooling-water treatment. Because Guam has poor water quality, cooling systems usually operate at low cycles of concentration. The VRTX equipment will reduce water and chemical costs.