IER

IER (Inland Environmental Resources) is a water and wastewater treatment supplier based in Spokane, Washington, serving primarily the Pacific Northwest and Midwest. Owned by Australian company Calix, IER provides treatment chemicals, equipment, delivery services, and on-site technical support. The company draws on extensive wastewater treatment expertise to help customers address operational needs while reducing risks to workers and environmental impact.

IER specializes in magnesium hydroxide-based products, including ALKA-Mag+, an alternative to caustic soda for wastewater pH adjustment and alkalinity control. Its solutions also support odor and corrosion control, hydrogen sulfide sequestration, biogas management, phosphorus removal, sludge compaction, and reduced polymer use. IER offers proprietary polymer and solids-removal technologies, along with technical guidance and services tailored to customer applications.

The company serves food and beverage processors, meat and dairy facilities, microelectronics operations, municipalities, and wineries and breweries. With plant locations in Iowa, Texas, and Washington, IER works with customers, engineers, and partners to develop practical water treatment approaches.