A clogged double kitchen sink can bring your daily routine to a frustrating halt. Whether you’re dealing with standing water on one side or both basins backing up, knowing how to address the issue quickly can save you time and money. At DDB Plumbing, we’ve helped countless homeowners in West Richland and Pasco resolve their kitchen sink drainage problems, and we’re sharing our expert methods to help you tackle this common plumbing issue.

Understanding Why Your Double Kitchen Sink Clogs

Double kitchen sinks typically clog due to an accumulation of food particles, grease, soap scum, and other debris in the drainpipe. The configuration of a double sink means both basins usually share a common drain line, which is why you’ll often notice water backing up into the opposite side when one sink drains. Homeowners in Kennewick and Richland frequently encounter this problem, especially in homes with garbage disposals where food waste can create stubborn blockages.

How to Unclog a Double Kitchen Sink With a Garbage Disposal

If your double sink has a garbage disposal, follow these steps to clear the clog safely:

Step 1: Turn Off the Power
Safety first—always disconnect the garbage disposal from its power source before attempting any unclogging method. Switch off the circuit breaker or unplug the unit completely.

Step 2: Check the Disposal
Run cold water and turn on the disposal to see if it clears the clog. Sometimes food particles just need an extra push. If you hear humming but no grinding, the disposal may be jammed and require resetting using the reset button underneath the unit.

Step 3: Use a Plunger
Fill the sink with several inches of water, then use a flat-bottomed plunger on the drain opening. If you have a double sink, plug the other drain with a wet cloth to create proper suction. Plunge vigorously for 20-30 seconds.

Step 4: Try the Baking Soda and Vinegar Method
Pour one cup of baking soda down the disposal side, followed by one cup of white vinegar. Let this mixture fizz and work for 15 minutes, then flush with hot water. This natural solution often breaks down grease and minor blockages without harsh chemicals.

Step 5: Snake the Drain
If the clog persists, disconnect the P-trap under the sink and use a drain snake to physically remove the blockage. This is where many homeowners choose to call DDB Plumbing at 509-240-9278 for professional assistance.

How to Unclog a Double Kitchen Sink Without a Garbage Disposal

For double sinks without a disposal unit, the process is similar but slightly simpler:

Method 1: The Plunger Technique
Fill both sinks with enough water to cover the plunger cup. Seal one drain with a wet cloth while plunging the other side forcefully. Alternate between both drains to create maximum pressure and dislodge the clog.

Method 2: Remove and Clean the P-Trap
Place a bucket under the P-trap (the curved pipe beneath your sink) and use a wrench to loosen the slip nuts. Remove the trap and clear out any debris. This method resolves most kitchen sink clogs and gives you direct access to the blockage.

Method 3: Use a Drain Snake
Insert a plumber’s snake into the drain opening or through the P-trap opening. Rotate the snake as you push it through the pipe until you feel resistance, then continue twisting to break up or hook the clog.

Prevention Tips to Keep Your Double Sink Flowing

Preventing clogs is always easier than clearing them. Avoid pouring grease down the drain, use drain strainers to catch food particles, run cold water when using the garbage disposal, and perform monthly maintenance with the baking soda and vinegar method.

When to Call Professional Plumbers

Some clogs require professional equipment and expertise. If you’ve tried these methods without success, or if you’re experiencing recurring drainage issues, it’s time to contact experienced professionals. DDB Plumbing serves homeowners throughout Washington with expert drain cleaning services using advanced techniques like hydro-jetting and video camera inspections.

Get Expert Help Today

Don’t let a stubborn kitchen sink clog disrupt your home. Contact DDB Plumbing today at 509-240-9278 or visit ddbplumbing.com to schedule your drain cleaning service. Our certified plumbers and drain technicians respond immediately to any emergency plumbing, drain cleaning, or excavation need. Whether you’re in West Richland, Pasco, Kennewick, Richland, or anywhere across Washington, we’re available for emergency service when you need us most. Protect your home with professional plumbing services from the team you can trust.