Evoqua Water Technologies Wastewater Ion Exchange (WWIX) services and equipment help customers meet their wastewater handling challenges. Evoqua provides system design, installation, and custom services that treat wastewater contaminated with heavy metals. Zinc, copper, nickel and chromium are just a few examples of the metals that can be removed to low part per billion levels. Our wastewater treatment systems are designed to meet your discharge requirements, achieve the water quality level needed for reuse and recycling and minimize the liability associated with on-site storage and handling of chemicals and wastes.