What is this Project?

This project creates a reliable water system that delivers high-quality drinking water from the Clackamas River to the communities of Lake Oswego and Tigard. Learn more...

The new drinking water treatment method is conventional filtration plus ozone. Learn more... The new water system is the most earthquake resilient in Oregon. Learn more... It isn't easy being green, but the new system is sustainable and energy efficient. Learn more...

Project News

Tuesday - May 9, 2017

National Drinking Water Week – May 7-13

Your Water: to know it is to love it

The average American uses 100 gallons of water a day. How often do you think about how our water is purified, or what it goes through in order to reach our homes? Behind the tap is a complex network of infrastructure, and at the heart of Lake Oswego and Tigard’s system is a new, state-of-the-art water treatment plant which produces and delivers fresh, safe, reliable drinking water year-round. It’s where all the magic happens!

To celebrate drinking water week (May 7-13), we are sharing the story behind the magic of clean drinking water - how Clackamas River water is treated and purified to exceed safe drinking water standards for Lake Oswego and Tigard communities.

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Friday - May 5, 2017

Hardscaping features taking shape at the treatment plant

A construction trailer departing on Kenthorpe Way last week

Water Treatment Plant Construction Update

WTP staff continue their testing of the ozone system, which should be fully online this month.

Over the last two weeks, several of the contractor’s temporary construction trailers were dismantled and removed off-site, along with a few large excavators. The last of the large trailers will be leaving the site early next week. Two small trailers will be present for the remaining work.

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Friday - April 28, 2017

Reservoir chlorination, fill and testing begins early May

Aerial Photo by Unique Perspectives Aerial Photography - March 2017

Waluga Reservoir 1 Roof Replacement Construction Update

The end is in sight! Grading is now complete around the tank, and new rock has been placed. Reservoir roof hatches have also been poured.

Early next week, the interior of the WR1 will be cleaned and chlorinated. Shortly afterwards, crews will begin filling the WR1 for a week of testing before it is placed back in service.

All work and site restoration is expected to be complete in late May.

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