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Lewiston Water Treatment Plant Retrofit

Partnering to lead the design development and water quality analysis to replace a century-old facility

  • $28M

    Budget

  • 10

    MGD Treatment

  • 2.5

    Years Design-Build

  • City of Lewiston, Idaho

    City of Lewiston, Idaho

Temporary facilities and creative solutions maintain water service, budget, and cut delivery time in half

For a century, the Lewiston Water Treatment Plant has been the primary source of water for the City of Lewiston. It was due to be replaced and the City selected us to help deliver a water treatment plant retrofit. 

Our design-build team led the design development and water quality analysis in partnership with IMCO Construction. The greatest design challenge was maintaining continuous water service to the community while constructing the new facility in the original facility’s footprint. After a complete system supply evaluation and water quality and water chemistry evaluation, we successfully completed the retrofit using temporary treatment trailers.

The project replaced the City’s 100-year-old traditional water treatment plant with a new automated membrane facility. This new facility is designed to provide 10 million gallons per day (MGD)—38 million litres per day (MLD)—of clean fresh water from the Clearwater River source. The design and construction included space and planning for a logical increase in production to 15 MGD (57 MLD).

Completed on time and two years ahead of the community’s schedule, the project came within three percent of the initial budget. With the water treatment plant’s retrofit in place, the City of Lewiston can provide its communities with clean, fresh water from the Clearwater River.

At a Glance

Client
  • City of Lewiston, Idaho
Partners
  • IMCO Construction–Design Build Lead
  • Benthin & Associates
  • GeoProfessional Innovation
  • Control System Technologies
  • Pall Water Corporation
Award
Design Build Institute of America, Design Build National Award of Merit 2023

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Meet Our Team

Michael Fuss, Area Manager

My proudest moments are when I connect the right idea and the right team to the right project.

Andrew Nishihara, Civil Engineer

I have a passion for working with communities and helping them find creative ways to make their dollars stretch further.

Michelle Peters, Associate, Senior Process Engineer, Water

I’m an outdoor enthusiast and I’m passionate about making a positive, tangible impact in my community and the environment.

Danielle Philbrick, Water/Wastewater Engineer In Training

I’m passionate about creating a better future for the planet—and communities—through thoughtful infrastructure design.

Bryan Black, Senior Civil Engineer

I enjoy working with clients to get challenging projects built.

Craig Wilcox, Vice President, Director of Engineering Delivery

Our breadth and depth of internal technical resources aren’t only well known in the industry—we’re sought out to solve the most challenging problems.
Craig Wilcox Vice President, Director of Engineering Delivery Read More

Mike Watson, Vice President, Director, Design Build

I get satisfaction from all the projects I work on. Sure, some are bigger or more challenging than others, but at the end of the day, meeting my clients’ needs is gratifying.

Michael Fuss

Area Manager

Andrew Nishihara

Civil Engineer

Michelle Peters

Associate, Senior Process Engineer, Water

Danielle Philbrick

Water/Wastewater Engineer In Training

Bryan Black

Senior Civil Engineer

Craig Wilcox

Vice President, Director of Engineering Delivery

Mike  Watson

Vice President, Director, Design Build

We’re better together

  • Become a client

    Partner with us today to change how tomorrow looks. You’re exactly what’s needed to help us make it happen in your community.

  • Design your career

    Work with passionate people who are experts in their field. Our teams love what they do and are driven by how their work makes an impact on the communities they serve.

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