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To create a siphon break and remove any chance of dirty sink water or water that backs up into the sink from getting into your dishwasher, your dishwasher drain hose needs to have a high loop or an air gap device as part of its installation. All building codes require at least a high loop. In many places, it’s necessary to install an air gap device to meet the code.

You can often identify a freeze-proof faucet by its structure. Unlike a traditional spigot, a freeze-proof one will include a long supply pipe that extends into your home and connects several inches back to your water supply. Many freeze-proof models also have an extra valve on top of the exterior of the spigot, which is the anti-siphon feature that protects against water backflow.

It is generally recommended to schedule a professional plumbing inspection annually for an average home. However, the ideal frequency can vary. Newer homes may only require an inspection every two years, while older homes, or those with a history of plumbing problems, benefit from more frequent annual checkups. Other factors that might necessitate more frequent inspections include having hard water or mature trees on your property with extensive root systems that could damage sewer and water lines. Regular maintenance helps identify potential issues early, preventing costly repairs, and typically includes checking for leaks, inspecting connections, and ensuring pipes and fixtures are in good working condition to extend the life of your plumbing system.

The regulations around whether drain pipe installers need to hold licenses or certifications differ based on where you live and the type of drain pipe installed. Municipalities have varying rules and regulations about who can and can’t perform plumbing work. However, we recommend hiring a certified plumber to install or modify your drain lines. Licensed plumbers will perform a high-quality, professional installation, which translates to a lower risk of clogs and leaks in the future. Use Angi’s state licensing tool to confirm the license status of your potential plumber before hiring them to install your drain pipe.