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Water
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.
The City is updating outdated, manually-read water meters to a new, wirelessly-read technology. These smart meters support efficiencies in our water system.
We are replacing nearly 12,000 residential meters city-wide. More than 5,000 meters have already been installed on the north side of the city. Throughout late 2023 and 2024, work will continue on the southside of the lake.
Clean drinking water is an essential resource we rely on every day. Providing residents and businesses in Lake Oswego with safe, dependable, high-quality water is our top priority.
Lake Oswego’s tap water meets or exceeds every State and Federal standard for safe drinking water. Get to know your drinking water by reviewing the latest 2023 Water Quality Report!
Lake Oswego currently meets or exceeds all federal and state requirements for water quality testing. PFAS is an emerging issue that all water providers and systems across the nation are experiencing. The City is closely tracking news about detections of PFAS in drinking water around the country, as well as the EPA’s newly proposed PFAS drinking water regulations. We are committed to protecting public health.
Fortunately, Lake Oswego and Tigard’s drinking water is at low risk for PFAS, and PFAS have not been detected in our drinking water from the Clackamas River.
Lake Oswego's drinking water originates in the Clackamas River watershed.
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.
The Lake Oswego Tigard Water Treatment Plant produces high quality drinking water for more than 100,000 customers every day. Lake Oswego's drinking water is made clean and safe using a state-of-the-art treatment process known as conventional filtration, plus ozone. Take a look inside the heart of the water treatment process.
The main source of lead in drinking water is typically from household plumbing or components associated with service lines. We offer free lead testing to our water customers. If you are concerned about the levels of lead in your home, you can pick up a test kit and instructions at the 2nd floor reception desk at City Hall. For questions about lead testing or your drinking water, call the Water Treatment Plant at 503-635-0394.
City personnel can assist with water shut-offs for home/business owners in the case of a leak, needed repair, or emergency.
Backflow devices separate potable water from non-potable water sources such as irrigation systems, medical equipment, and private pump systems. Backflow Tests are required to be completed and submitted by July 15 of each year.
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.
June 9, 2021 marked five years since the new Lake Oswego Tigard water system started providing high-quality drinking water to almost 100,000 customers throughout Lake Oswego and Tigard! Watch Lake Oswego Mayor Buck and Tigard Mayor Snider reflect on how important this partnership has been – and continues to be – for both communities. Let’s celebrate securing our most valuable resource for our cities’ future: investing in public health and preparing our cities for the long-term.
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.
The water meter is a City owned device that measures the quantity of water used by a resident or business. It is the device that meter readers read for every billing cycle to determine water usage.
To find out what your water pressure is, contact Public Works Maintenance to request a measurement.