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

September 14, 2020 \ ACTI-Mag \ Improving the Sustainability of Water Treatment \ Food & Beverage
Achieving sustainable dairy wastewater management with magnesium hydroxide

AMALGAM-60, an innovative magnesium hydroxide slurry, was used by a dairy processor in the Pacific Northwest to provide better pH

November 10, 2020 \ ACTI-Mag \ Improving the Sustainability of Water Treatment \ Food & Beverage
Caustic soda replacement at a fruit processing plant

A food processing plant in the Pacific Northwest that manufactures fruit products was generating acidic wastewater and looking for a

September 11, 2020 \ ACTI-Mag \ Improving the Sustainability of Water Treatment \ Food & Beverage
Converting from caustic to magnesium hydroxide

Spokane County Regional Water Reclamation Facility, operated by Jacobs, processes 8 million gallons per day (mgd) of wastewater collected from


November 07, 2022
Magnesium Hydroxide Feed Reliability – How Low Can You Go?

Anyone who has ever worked with a thick, slurry product like magnesium hydroxide knows that the biggest challenge is to

November 03, 2022
Introducing Theresa Kelley

Prior to working at IER, Theresa was an administrative assistant and bookkeeper in the Skagit Valley area just north of

July 25, 2022
IER News Issue 8 – July 2022

A Letter from Doug Kelley, President of IER Welcome to IER’s Summer 2022 Newsletter!  Hoping all are enjoying some much

Along with our parent company, Calix (ierwater.com), 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!

CALL US: 800-331-3314

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