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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.
High quality products | Proactive customer service
Based in Spokane, Washington, IER primarily services the Pacific Northwest and Upper Midwest with plant locations in Sioux City, Iowa; Muscatine, Iowa;
Centralia, Washington and Pasco, Washington.
THE SOLUTIONS WE OFFER
Manage your wastewater without compromising your people,
your operations, or the Earth.
IER serves a wide range of industries
Food & beverage, meat & dairy, microelectronics, municipal wastewater, winery & brewery
Customer Stories
Improving the Sustainability of Water Treatment \ Food & Beverage
An innovative mixed-metal hydroxide for pH control and wastewater microorganism activity 
An innovative mixed-metal hydroxide for pH control and wastewater microorganism activity at a meat processing facility in the United-States.
Improving the Sustainability of Water Treatment \ Municipalities
Solving extreme H2S odor, El Centro
ACTI-Mag reduces the odor to manageable levels at El Centro, Southern California, United-States.
Special thanks to our support associations
A safe, green & cost-effective alternative to caustic soda
AMALGAM has a higher neutralising value per pound when compared with caustic whilst being significantly safer to handle than other traditional alkalis, making it a very safe and cost competitive option.
Find out moreWebinar Series – Better pH & Alkalinity Control
A very informative, yet brief session from Dr Doug Kelley, one of the field leaders in pH and alkalinity control – to understand the basic chemistry that lies under the pH measurement and how alkalinity and other chemicals can affect wastewater treatment. Also learn about the differences between using caustic, lime and soda ash for pH control or the cost benefits of using Magnesium Hydroxide products.
Latest News
September 02, 2020 \ future webinar
Webinar – Mine and mineral processing water neutralisation and metal precipitation using ACTI-Mag
In this webinar, we look at what are the best pond conditions for growth and how AQUA-Cal+ can help to achieve these conditions.
August 05, 2020 \ Improving the Sustainability of Water Treatment
Magnesium Hydroxide Experiment – the alternative to sodium hydroxide
A safe and cost effective alternative to the use of sodium hydroxide (caustic soda) for wastewater alkalinity and pH adjustment.
June 27, 2020 \ Improving the Sustainability of Water Treatment
The value of magnesium hydroxide as a substitute for caustic soda and lime
Magnesium hydroxide is the least expensive and most powerful alkaline chemical treatment available on the market for pH control applications.
Along with our parent company, Calix (www.calix.global), we work cooperatively with each other, our team, our customers, and partners worldwide, to make a positive difference for the long-term. Because there is only one Earth.
Mars is for quitters!
SUPPORTING WATERAID
Because we truly care about sanitation
Almost 2 billion people do not have a decent toilet or access to basic and safely managed sanitation. In many cases, faeces and urine end up untreated in the environment, contaminating it and threatening people’s health.
This is why IER supports WaterAid programs, to facilitate access to safe water, sanitation and hygiene in the world’s poorest and most marginalised communities.