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.
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As required by the Oregon Health Division, the City of Lake Oswego has developed a cross connection control program. Its purpose is to protect the public water system as well as the citizens' private water system from possible contamination, and provide the best possible water quality.
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Water Shut-off
City personnel can assist with water shut-offs for home/business owners in the case of a leak, needed repair, or emergency. Please contact the Operations Division at (503) 635-0280 to get your water turned off.
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Lake Oswego’s key water supply facilities – the water intake on the Clackamas River and the water treatment plant in West Linn – are more than 40 years old. Over the years the City of Lake Oswego has continued to invest in its water supply system through upgrades, replacements, and maintenance. This has allowed the City to keep water rates low.
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If you are experiencing odd tasting, odorous, or colored water there are basically two causes that could be occurring:
A problem with the City of Lake Oswego source water.
An interaction of disinfection agents with a build-up of organic material in your home's plumbing system.
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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.
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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, including aerial photography, click on a property or other features to obtain information, use tools to markup and print a map, use measurement tools, change maps to a selection of pre-set layers, and use quick links to
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The City of Lake Oswego treats water by pumping raw (river) water from our Clackamas River intake at Gladstone, under the Willamette River to the Treatment Plant in West Linn. When the water reaches the plant it receives doses of chemicals that help to make it safe. Chlorine is added to begin the process of disinfecting the water. Alum (aluminum sulphate) is the primary coagul
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