Monday - January 25, 2016

The Quality of Your Drinking Water

Clackamas River

In light of the unfortunate water quality issues in Flint, Michigan, the Lake Oswego Tigard Water Partnership would like to share some information about the quality of Lake Oswego’s drinking water, which Tigard water customers will also share this summer.

The city is currently optimized per the Oregon Health Authority for corrosion control, which prevents harmful levels of lead from leaching into the water. After the first change in the city’s treatment process as part of the project, the city’s water treatment plant team conducted two 6-month sampling rounds in customer homes for both lead and copper. The system was found to be in compliance and optimized. A description of the study and call for volunteers can be found here.

The results of the study are summarized in Lake Oswego’s 2015 water quality report. The report also provides background information about the source of Lake Oswego’s drinking water and more details about the treatment process.  Full sample results for lead and all water quality monitoring are available here.

Additionally, the Regional Water Providers Consortium, a collaborative and coordinating organization to improve the planning and management of municipal water supplies in the greater Portland metropolitan area, recently published an article about regional water supplies meeting or exceeding federal and state drinking water standards. 

For additional questions or concerns, please contact the water treatment plant at 503-635-0394.