IER is a supplier of environmentally friendly water and wastewater treatment chemicals and equipment. Owned by Calix, an Australian company with global operations, IER offers Magnesium Hydroxide-based products as safe, earth-friendly alternatives to the use of caustic soda for pH neutralization, along with proprietary polymer solids removal technologies. We take pride in providing high-quality products, technical credibility in the applications of water, process water, and wastewater treatment, dedicated delivery specialists and equipment, and proactive on-site technical service. 100 years of combined expertise in wastewater treatment.