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The City of Lake Oswego operates and maintains a Water Treatment Plant in West Linn, as well as a distribution system, a water conservation program, and a cross connection control program.
Water plays a vital role in everyone’s life. The Water Department’s mission is to bring healthy drinking water of the highest quality to Lake Oswego’s residential and wholesale customers from our intake facility on the Clackamas River in Gladstone, all the way to your tap.
Get to Know Your Drinking Water - review your 2018 Water Quality Report by July 31 and enter to win $100 off your next utility bill! The City prepares a Water Quality Report every year, in accordance with State and Federal regulations, to bring our customers the best available information about the water you drink.
Key Information for Lake Oswego Water Customers - June 2018
Cyanotoxins (produced by blue green algae) were recently detected in Salem’s drinking water. Lake Oswego’s drinking water is safe to drink. Read on for more information.
Water Treatment Plant staff have responded to many water customer requests for lead samples over the past year.
Backflow devices separate potable water from non-potable water sources such as irrigation systems, medical equipment and private pump systems.
City personnel can assist with water shut-offs for home/business owners in the case of a leak, needed repair, or emergency.
Lake Oswego's drinking water originates in the Clackamas River watershed.
The Lake Oswego Tigard Water Treatment Plant produces high quality drinking water for more than 90,000 customers every day.
Lake Oswego's drinking water is made pure and safe using a state-of-the-art treatment process known as conventional filtration, plus ozone. Read on to take a look inside the heart of the water treatment process.
The cities of Tigard and Lake Oswego jointly share the costs of operating and maintaining a water treatment plant and supply system that provides high-quality drinking water year-round to both communities.
Interested in learning more about your drinking water quality? Have a water quality concern? Read on for helpful information.
New to town and need to start your Utility Services? Or just have a question about your Utility Bill, water service, leaks, or consumption information, the Utility Bill Information page has links to everything that you will need to start, stop, understand and find out more about your Utility Bill and Services.
Lake Oswego's Interactive Maps allow the user to navigate the map by zooming in and out, search the map by address, tax lot number, or intersection, turn layers on and off, click on a property or other features to obtain information.
- It is possible to detect leaks in your home on your own. Most water leaks can be seen or heard, though some can be difficult to detect.
The water meter is a City owned device that measures the quantity of water used by a citizen or business. It is the device that meter readers read for every billing cycle to determine water usage.