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About IER

We pride ourselves in being a wastewater treatment partner.

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IER takes pride in being a technically credible wastewater treatment company, not simply a magnesium hydroxide supplier.

IER is a supplier of environmentally friendly water and wastewater treatment chemicals and equipment.

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.

Owned by Calix, an Australian company with global operations, IER brings 20 years of experience working with plant engineers and operators to offer the most cost-effective solutions for their specific needs.

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.

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.

IER has products and expertise in applications such as:


  1. Foundation of IER


    In 1997, Dick Handley created Inland Environmental Resources (IER) in order to provide local manufacturing and supply of environmentally-friendly Magnesium Hydroxide products for the Pacific Northwest.

  2. Primary market and product development


    IER's primary market was the specialty potato industry that had recently changed from a lye peeling process to the use of steam, resulting in a wastewater stream that flipped from being highly alkaline to slightly acidic.

    After a few years of product development and on-site testing, it was found that Magnesium Hydroxide provided the most cost-effective and safe option for boosting the pH while also providing polymer reduction and sludge reduction.

  3. A growing team


    Dr Doug Kelley is added to the team to spearhead product quality improvements and sales growth.  At the time, Doug had small children who asked what he did; his response was simply that “we help folks clean their water after they use it”. 

  4. Rapid expansion


    Within a few years, IER expands operations to include five manufacturing plants stretching from the Pacific Northwest to Lake Michigan across the northern tier states and Canada.

  5. Acquisition


    In 2019, IER was purchased by Calix Australia, with plans to further expand the offerings and markets for continued IER growth. 

  6. A recognized leader in Magnesium Hydroxide based solutions for wastewater


    Today, IER is a recognized leader in the application of Magnesium Hydroxide-based products for wastewater treatment.

Nobody cares how much you know, until they know how much you care.  (Pres. T. Roosevelt)

Meet our team

Our customers say it best - read their 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
Hydrogen Sulfide (H2S) in wastewater odor control case study, El Centro

ACTI-Mag reduces the odor to manageable levels at El Centro, Southern California, United-States.


December 17, 2020 \ Calix Global Challenges
pH & Alkalinity – How are they related?

The relationship between pH & alkalinity is intimately connected with the chemistry of the aqueous bicarbonate equilibrium system. 

September 02, 2020 \ Improving the Sustainability of Water Treatment
Webinar – Mine and mineral processing water neutralisation and metal precipitation using ACTI-Mag

During the webinar, Michael Wheatland demonstrates how gold, copper, coal and other mines around Australia are using ACTI-Mag to neutralise process or waste water to achieve better costs, safer process and a better environmental outcome.

August 05, 2020 \ Improving the Sustainability of Water Treatment
Magnesium hydroxide vs caustic soda / sodium hydroxide demonstration

A safe and cost effective alternative to the use of sodium hydroxide (caustic soda) for wastewater alkalinity and pH adjustment.

Along with our parent company, Calix (, 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!

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