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Yes, if you live in a climate with extended periods of frost or snow, it’s best to winterize the sink and avoid potential bursting. Similar to winterizing a garden hose, turn off your water from the source. Once turned off, open the faucet so the remaining water completely drains out. You can also pour a small amount of antifreeze down the sink drain so any trapped water won’t freeze.

Homeowners insurance usually doesn’t cover sewer backups because it’s typically an avoidable problem with proper maintenance. The only exception would be if the backup is occurring because of local flooding and only if your city uses a combined drainage system for stormwater and sewage. If that’s the case, your policy should cover any resulting damage.

The most common types of backflow preventer devices depend on the purpose of the installation. For example, Portland.gov states that the double-check valve assembly and the pressure vacuum breaker assembly are most commonly used in irrigation systems, while the National Fire Protection Association (NFPA) states that double-check valve assembly and the reduced pressure zone assembly backflow preventers are best for fire protection systems.

Ask a plumber for recommendations on the best backflow preventer device for your home.

Hiring an experienced plumber is key to a successful plumbing project and protecting your home from potential damages. Improper plumbing maintenance and repairs can lead to problems with sewage, flooding, your home’s foundation, and more. The work of a licensed plumber helps guarantee not only experience and expertise but also quality work, insurance, and adherence to local rules and regulations. Note that working with unlicensed plumbers doesn't automatically negate experience—as six states don’t require plumbers to have licenses— but it’s a safeguard to consider.