Contact us

Based in Spokane, Washington, IER / Calix USA primarily services the Pacific Northwest and the Midwest with plant locations in Sioux City, Iowa; Muscatine, Iowa; Lufkin, Texas; Centralia, Washington and Pasco, Washington.

Contact us

We pride ourselves in being a wastewater treatment partner.

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.

Corporate Office:

  • Spokane, WA

Operations:

  • Pasco, WA
  • Centralia, WA
  • Sioux City, IA
  • Muscatine, IA
  • Lufkin, TX

Sales/Technical Support Staff:

  • Granger, WA
  • Sumas, WA
  • Walla Walla, WA

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

MEET OUR TEAM

GOT A QUESTION? WANT A QUOTE?
CALL US: 800-331-3314

Want to schedule a chat with one of our technical sales managers?

CLICK HERE

Or use the form below, we’ll be in touch soon.

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You can also check our FAQs for answers to popular queries:

  • Who is the team behind IER

    “We help our customers with their water.”

    At IER,  we take pride in providing high-quality products, technical credibility in the applications of water and wastewater treatment, dedicated delivery specialists, and proactive on-site technical service.

    Meet our team.

  • How can I apply to work at IER?

    Owned by Calix, an Australian company with global operations, IER has a team of talented individuals who are passionate about the growth and success of the organisation. As we grow we will continue to have job opportunities across a variety of areas.

    A career at Calix provides opportunities within an innovative environment, working alongside skilled professionals. As part of a close-knit team, our team members have the opportunity to develop their skills whilst contributing to environmental sustainability.

    Follow us on LinkedIn and stay updated for any job opportunities.

  • How do I stay updated with IER news?

    Calix – our parent company – publishes a quarterly Newsletter detailing company’s achievements, current projects and R&D updates and people.

    To subscribe to Calix News, use the sign up form at the bottom of the page (in the blue banner). You can unsubscribe from the Calix News anytime, simply click the link to unsubscribe at the bottom of our emails.

  • Where do I find Calix financial and share registry information?

    Annual Reports are made available to all shareholders. If you cannot locate a copy or wish to request a replacement, please email us with your shareholding details.

    More information can be found on the Calix website’s investor page.

  • Who are the executives at Calix?

    For profiles of all the senior executives and board members of Calix, visit the Calix websites’s executive management and board of directors pages.

Latest News

June 09, 2021
AMALGAM Mg(OH)2: alternative to caustic soda for wastewater treatment – with Birch Bay Water & Sewer

A safe and cost-effective alternative to the use of sodium hydroxide [caustic soda, NaOH] for wastewater alkalinity and pH adjustment

June 09, 2021
Magnesium Hydroxide’s Role in Sludge Compaction

Trying to determine how to improve wastewater sludge dewatering and compaction can be a very complicated process.  The root cause

September 07, 2023
Introducing Evan Mendoza Pasco Plant Manager

Before coming to IER Evan worked for Lamb Weston for 15 years as a Production Team Leader, where he worked

August 22, 2023
Magnesium Hydroxide for Improved Membrane Bioreactor Performance

Introduction The processes of treating wastewater have evolved dramatically since the Clean Water Act became law in 1974, resulting in

March 26, 2023
Video – Exploring the Reactivity of ALKA-Mag+ VS Competitors

Join Doug and John from IER (Inland Environmental Resources Inc.) as they explore the reactivity difference between two competing magnesium

IER works cooperatively with our parent company, Calix Ltd. (www.calix.global), along with our customers, engineers, and partners worldwide, to extract the best understanding of every industrial situation in order to create a positive sustainable 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.

SUBSCRIBE TO OUR NEWSLETTER

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