Lake Oswego water remains safe to drink and use. A regional chlorine shortage has disrupted supplies. The City is monitoring the situation and asking everyone to use water wisely and reduce usage. Learn more.

Engineering Contact Information

Phone: 503-635-0270

City Hall, Third Floor
380 A Avenue, Lake Oswego

Counter Hours:

Due to COVID-19, until further notice, The Permit Center for the Building, Planning and Engineering Departments is closed to walk-in customers. To continue to offer service in all other areas, we encourage people to: 

- Use electronic submittal or Email (as applicable) for all permit applications. 
- Drop off plans at Reception (3rd floor) only if they cannot be sent electronically.
- Make an appointment if you must come to City Hall for reasons other than dropping off plans.  

For more information on strategies and closures the City has implemented to slow the spread of the coronavirus, visit

Water Treatment Plant
Water Conservation