There are Calix offices and partners all across the globe.

To find one near you, and visit our regional websites - select your region below.

Our team

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.

“We help our customers with their water.”

Dr Doug Kelley

President of IER

Dr. Kelley is a Ph.D. Chemist with 29 years of research & development experience in water and wastewater treatment technologies.

Doug graduated from Iowa State University in 1990 with a Doctorate in Inorganic Chemistry. He worked with Nalco for 14 years in basic research and new product development.

He is also the co-inventor on numerous patents related to scale and corrosion control in boiler and cooling water environments.

As President of Inland Environmental Resources (IER), Doug has spearheaded the development of proprietary, safe, environmentally-friendly, and cost-effective chemical products based on Magnesium Hydroxide.

Dr. Kelley is a member of the American Chemical Society, American Society of Heating, Refrigeration, & Air-Conditioning Engineers, and the Water Environment Federation.




Peter Leber
Centralia-South Regional Manager

John Strong
Centralia Plant Manager

John Van Wingerden
Centralia-North Regional Manager

Karen Kurle
Customer Service Manager

Kevin Kohler
Pasco Project Engineer

Theresa Kelley

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.

Chad Steinkuehler
Midwest Regional Manager

Bartolo Gonzalez
Pasco Plant Supervisor

Patrick Helman
Pasco Plant Truck Driver

Talon Hutchinson
Centralia Plant Truck Driver

Steven Staggs
Centralia Plant Truck Driver

Jerry Linthicum
Centralia Plant Truck Driver

We believe our people are key to achieving our purpose.

Asa Thunder Eagle
Pasco Plant Truck Driver

Joe Cervantes
Pasco Plant Truck Driver

Manuel Jimenez
Pasco Plant Operator

Ray Cruz
Centralia Plant Truck Driver


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!

Contact our team

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Latest News

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.


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.


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