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Wastewater Treatment Facility - Proposed Rate Increase

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.

The project team recently held virtual community informations to discuss the project and rate increase. To view the sessions or learn more visit here.

Street Sweeping

The City sweeps every neighborhood on a regular rotation using our three street sweepers. They work zone by zone, Monday through Friday, and some weekends. While they can sweep the whole city in about a month during spring and summer, fall and winter take longer due to heavy leaf and pine needle buildup. Thank you for your patience as crews make their way through each zone.

You can help sweeping be more efficient by keeping leaves and yard debris out of the street. Please do not rake, blow, or pile leaves into the roadway, as this clogs and damages equipment and is also against City code.

Ash Tree Removal & Management

The City is taking proactive measures to help minimize the impacts of the emerald ash borer (EAB) – a non-native, invasive wood-boring beetle that feeds on ash trees, eventually killing them. These measures will help reduce the impacts of the loss of ash trees across the city and protect the public and City staff from ash trees as they become hazardous.

In October, the City will begin preemptively removing approximately 150 trees from City-owned properties including parks, open spaces and facilities. The selected ash trees are near homes, utilities, paths or roads and may become hazardous once infested. Trees scheduled for removal will be marked with a red X.

Read more about what the City is doing...

Drug Take Back Event - Fall 2026

To help community members properly dispose of unwanted or expired medications, the City is holding a one-day-only drug take-back event on Saturday, October 24. This collection event will take place from 10 a.m. to 2 p.m. at Mary's Woods (Gallagher Building, 17550 Provost Street, Lake Oswego). This event will be a drive-thru collection.

Read more about acceptable and non-acceptable items...

Workshop - Tree Removal & Recent Code Amendments

Do you have a dead, dying or Emerald Ash Borer susceptible tree on your property? The City has made it easier to remove these types of trees. Join us on Thursday, October 29 from 5 to 6:30 p.m. to learn about the City’s tree code requirements for tree removal permits and recent changes to the City’s tree regulations.

This workshop will explore tree code definitions and criteria for issuance of dead, dying, and Emerald Ash Borer susceptible trees, hazard, emergency, Type I, Discretionary Type II, and Minor Forest Management permits, and demonstrate how to properly complete a Discretionary Track Type II Application Checklist.

Pre-registration is required.

Annual Residential Stormwater Facility Inspections

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.

Ballot Box Locations

This year, Election day is Tuesday, November 3. Clackamas County will begin mailing ballots out on October 14.

The City of Lake Oswego has two convenient ballot drop sites for voters:

City Hall, 380 A Avenue - located on the upper parking lot near the main (A Avenue) entrance.
Westlake Park, 14165 Bunick Drive - located south of the covered park area on the lane that connects to Melrose Street.

Both ballot boxes are located outdoors, are available 24/7, and allow you to cast your vote from the comfort of the driver’s seat of your car.

Ballot boxes will remain open until 8 p.m. on Election day.

Great Pumpkin Toss

There are a number of ways you can dispose of your Halloween pumpkin - you can put it in your compost pile, you can put it in your yard debris container for curbside collection, or... you can toss it off the training tower at the Westlake Fire Station!

Bring your pumpkins, carved or not, to Westlake Park on November 1 between 2 and 5 p.m. to take part in this free, fun event. Participants will climb the tower and toss their pumpkin to a target below.