Profile: Chief Industries offers Ecolo-Chief wastewater treatment systems, which uses an activated sludge treatment process for treating wastewater. Ecolo-Chief systems have capacities, ranging from 7000-354,900 gallons per day. Using the modular tank concept, systems can be engineered for capacities up to 750,000 gallons per day. Our systems can be used for residential developments, correctional facilities, manufactured housing parks, hotels & resorts, and industrial facilities. The treated effluent can be reused for irrigation, landscape water, fire suppressant water, recharging ground aquifers and gray water.