The Lake Oswego Tigard Water Partnership is an agreement between the cities of Lake Oswego and Tigard to share drinking water resources and costs. Both cities jointly own and operate a new, reliable water system that delivers high-quality drinking water from the Clackamas River to the communities of Lake Oswego and Tigard. Learn more...

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

Partnership Updates

Wednesday - November 1, 2017

A Legacy for Generations – Safe, Clean, Reliable Drinking Water

The Lake Oswego Tigard Water Partnership Project is officially complete and under budget. Almost a decade in the making, this historic project has been no small feat. The project took more than five years of planning, permitting and designing, followed by four years of construction across four different communities, along major highways, in residential streets, through business districts, and under waterways.

The final cost for the project is $249 million, $5 million below the previous estimate of $254 million. Because of this lasting investment in public health, Lake Oswego and Tigard have the most reliable and resilient water system in Oregon, and a state-of-the-art treatment process that produces high-quality and better tasting drinking water year-round.

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Monday - October 16, 2017

Lake Oswego, Tigard officials celebrate completion of water project

by Anthony Macuk, Lake Oswego Review - October 15, 2017

In the news...

More than 100 elected officials, City staff and project contractors from Lake Oswego and Tigard gathered last week to celebrate the rebuilding of a water treatment plant in West Linn that marks the official completion of the Lake Oswego-Tigard Water Partnership.

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