Maintenance and Motor Pool
503-635-0280
Maintenance Center
17601 Pilkington Rd
Lake Oswego OR 97035
Water Treatment Plant
503-635-0394
Water Conservation
503-675-3747
Public Works
The Lake Oswego Public Works Department is responsible for maintaining infrastructure systems throughout the City to ensure they are working correctly, efficiently, and that the life of our assets is maximized. Streets, Water, Sewer, Stormwater, Motor Pool and City Beautification maintenance programs make up the department with each responsible for their own infrastructure system.
Here at Public Works, we take pride in providing utility maintenance to help make Lake Oswego a great place to live.
News & Announcements
To replace the aging 1964 Tryon Creek wastewater plant, Lake Oswego is undertaking a major capital investment in a new wastewater treatment facility. A rate increase is necessary to help fund this essential infrastructure investment.
During their September 1 meeting, City Council evaluated two rate options: a one-time 28% increase, followed by annual inflationary adjustments of about 3.9% or an 8% annual increase for 10 years, followed by annual inflationary adjustments of about 3.9%.Council will determine which approach to take at their October 13 meeting.
Learn More: Join a virtual community information session on October 1 to learn more about the project and proposed rate increases, or visit the project webpage to sign-up for e-news. Register in advance here.
As leaves fall, storm drains can get blocked by debris, leading to localized flooding. These drains are vital for keeping streets and sidewalks clear of excess rainwater as well as maintaining stormwater quality standards. Simply clearing leaves and debris from the surface of catch basins near your property with a broom or rake can keep the drainage system functioning well.
The City has a limited number of free drop boxes available to support neighborhood clean-up events through a contract agreement with Republic Services. Neighborhoods can apply for a free drop box to help collect neighborhood leaves.
Stormwater facilities help collect, slow down, filter, and safely manage rainwater before it enters local streams, rivers, or the ground. Regular inspections and maintenance help these systems work properly, reduce flooding, and protect water quality.
The City of Lake Oswego is required by its National Pollutant Discharge Elimination System (NPDES) permit to make sure privately owned stormwater facilities are properly maintained. To meet this requirement, property owners or facility operators must inspect their stormwater facilities each year and submit an annual inspection and maintenance report to the City.
Lake Oswego and the Clackamas River Water Providers are asking our customers to help keep water in the Clackamas River for the fall fish runs. River levels are significantly low right now, so let’s make sure there is enough water for the Coho and Chinook Salmon by reducing or shutting off outdoor watering. Red conservation actions:
- Reducing or shutting down all outdoor watering, spot water when needed
- Taking your car to a commercial carwash which recycles the water
- Shutting off all outdoor water features
- Not letting water run off driveways, sidewalks, or down the street
The more we can conserve, the easier this journey will be for these threatened and endangered salmon species.
Thanks for doing your part to keep water in the Clackamas River!
There is no such thing as a flushable wipe – even the ones that say flushable. “Flushable” wipes cause serious damage to sewer systems and homes because they don’t break down or dissolve, clogging sewer pipes, damaging equipment, and causing expensive repairs for homeowners and our public sewer system.
Do not flush wipes! The only items that should be flushed down the toilet are toilet paper and human waste. Other items, like wipes, should be thrown in the trash.
We want your help in making community streets a safer and more comfortable place. While staff work diligently on addressing issues that are spotted, we understand that we can’t catch everything. If you have a concern related to traffic, please use this form to report issues
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 2026 Water Quality Report.
Proper disposal of fats, oils and grease protects your home, business, public health, and the environment.
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