A college operates four chillers with a cooling capacity of 1,600 tons. The cooling water system includes four individual cooling towers with a total water volume of 14,000 gallons. Scale and deposits became a serious issue under chemical treatment, and local effluent discharge regulations were requiring the water treatment system to be environmentally friendly.

Two CHC 60-GPM systems with filtration were installed in May 2006. Each CHC system treats two cooling towers.

The college became compliant with effluent requirements. System scale and water usage was reduced, helping the college with its campus-wide resource and energy conservation program.

Cycles of concentration increased from 2.8 to 5.0 with the CHC system. Annual water savings for the customer exceed 5.2 million gallons. The customer also reduced blow down by over 50%.