In August 2008, the cities of Lake Oswego and Tigard entered into a partnership to share drinking water resources. The Lake Oswego Tigard Water Partnership (LOTWP) program increases system capacity to deliver high-quality drinking water from the Clackamas River.

The $250 million program is comprised of multiple projects including: a new water intake structure on the Clackamas River, a 32 million gallon per day (mgd) water treatment plant expansion in West Linn, 60,000 lineal feet of new raw water and finished conveyance piping, and finally, a new 3.5 mg storage reservoir and pump station.

Pacific Building Insight was hired to assist the City of Lake Oswego as well as Brown and Caldwell’s project management team in many capacities including:  developing the master schedule for land use, permitting, design and construction; preparing the engineers’ cost estimates for the conveyance pipelines alternatives; reviewing/validating the engineers’ estimate for the water treatment plant expansion; performed constructability reviews, value engineering, and risk assessment; reviewed and accepted contractors’ construction schedules, provided inspectors during construction for the water treatment plant and conveyance piping; and assisted with tracking, reporting progress, and claims management issues and dispute resolution during construction.

We are very proud of this successful program and everyone involved. Working together, the two cities can guarantee access to clean, safe water for years to come.

Construction is ongoing and delivery of water is anticipated in late 2016.  For more information go to