Water Quality Reports

The City of Lake Oswego prepares an annual Water Quality Report in accordance with State and Federal regulations, to bring our customers the best available information about the water you drink. We look forward to producing the best quality report we can and sharing our results with our customers. The latest report is here: 

2023 Water Quality Report

If you would like a FREE printed copy, please call 503-534-5741, or fill out the online web form and we will send a copy to your mailing address.