What you can do to prevent frozen pipes
You can start to prepare your plumbing for winter before temperatures dip below freezing.
- Learn where your water shutoff valve is and how to use it so you can respond quickly if your pipes break during cold weather.
- Disconnect hoses from outdoor faucets. Turn off water to outdoor faucets (if you have a separate outdoor shutoff valve) or wrap outside faucets and hose bibs with insulation. Use molded-foam insulating covers (available at most hardware stores) or newspaper or rags covered with plastic wrap.
- Caulk around pipes where they enter the home.
- Close all foundation vents and fill vent openings with wood or foam blocks.
- Insulate pipes in unheated areas, such as attics, crawl spaces, and basements.
- If you leave home for several days, put your furnace on a low setting instead of turning it off. This may not prevent freezing pipes, but it can help.
- Start building your emergency water supply in case your water service is interrupted by frozen or burst pipes. Learn how to store emergency water.
When temperatures are below freezing, you can also:
- Open cupboard doors in the kitchen and bathrooms. This allows these pipes to get more heat from inside your home.
- Turn your faucets on to let a slight drip of water run.
What to do if your pipes freeze
If some of your faucets are working and others are not, you may have a frozen pipe.
- Use a hair dryer or heat lamp to safely thaw frozen pipes.
- Once the pipe has thawed, leave a little water running so the pipe doesn’t freeze again.
- Do NOT open the water meter box near the curb. It could increase the chance of freezing water at the meter.
What to do if your pipes break
- Close your main water shutoff valve. Most shutoff valves are located where the water line enters the house, either at the front of your house where you connect your hose, in the basement near the hot water heater, or inside the garage.
- Turn off your water heater. Locate the dedicated shutoff valve on the cold-water inlet.
- If you live in an apartment or multifamily building, you may not be able to access your shutoff valve. Contact your property manager to shut off the water. If you can’t reach your property manager, you can call our 24-hour emergency dispatch line at 503-823-4874 to request an emergency water shut off.
- Contact a plumber or your property manager for repair work. Repairing broken pipes on the customer’s side of the meter is the property owner’s responsibility.
- After the leak is repaired, customers can request a bill adjustment due to the leak. For more information on leak adjustments, contact our Customer Service staff by phone at 503-823-7770 or email at PWBCustomerService@portlandoregon.gov.
Identifying and reporting main breaks
Just like your household pipes, water mains are more likely to break during colder weather.
If you observe water running from streets or sidewalks, report the leak to the Water Bureau's 24-hour Emergency Line at 503-823-4874.
Our crews are ready to respond to emergencies like water main breaks 24-hours a day, seven days a week.
Learn more about how we fix main breaks
Additional resources
- Winter weather information from other City bureaus
- Learn more about emergency water shut-off valves
- More tips for winterizing your plumbing from the Regional Water Providers Consortium
- Tips for preparing for winter weather from the Federal Emergency Management Agency (FEMA)
- Learn how to create an emergency drinking water supply