What Causes Kitchen Sink Not Draining
Kitchen sink clogs are primarily caused by grease, food particles, and soap buildup in the P-trap and drain line. Grease coats the pipe walls and solidifies, then food particles adhere to the greasy surface, progressively narrowing the drain until water can't pass through.
Boise-specific factor: Boise's hard water compounds kitchen drain problems — mineral deposits create a rough surface inside pipes that catches grease and food particles more readily. Homes with garbage disposals that are used without adequate water flow develop clogs faster.
Signs You Have Kitchen Sink Not Draining
Watch for these warning signs in your home:
- ✓ Water stands in the sink basin and drains very slowly
- ✓ Both basins are backed up (double sink)
- ✓ Gurgling from the drain when water is running
- ✓ Bad smell from the drain area
- ✓ Dishwasher water backs up into the sink
Can You Fix This Yourself?
Try plunging with a cup plunger (not a flange plunger). If you have a double sink, seal one drain with a wet rag while plunging the other. Check and clean the P-trap under the sink — place a bucket underneath, unscrew the trap, and clear any debris.
If the problem persists or you're unsure, call a licensed plumber. Attempting complex repairs without proper tools can cause further damage and void warranties.
How Our Plumbers Fix Kitchen Sink Not Draining
We snake the drain line to clear the blockage, then inspect the line for grease buildup or damage. For severe grease clogs, we use hydro jetting to restore full pipe diameter. We also check the garbage disposal and dishwasher drain connection for issues.
Experiencing kitchen sink not draining? Call now for same-day diagnosis.
Call (208) 555-0199 — Free EstimateKitchen Sink Not Draining Repair Cost in Boise
Typical cost to fix kitchen sink not draining in the Boise area: $150-$250 for standard clearing, $300-$500 for severe grease clogs. We provide an upfront quote before starting any work — no surprises.
How to Prevent Kitchen Sink Not Draining
Never pour grease down the drain — let it cool and dispose in trash. Run cold water for 15 seconds before and after using the disposal. Flush with hot water and dish soap weekly.
Frequently Asked Questions
Why is my kitchen sink draining slowly on both sides?
Both basins share a common drain line. The clog is past the point where the two drains merge — typically in the horizontal pipe running to the main drain or the wall fitting.
Can a garbage disposal cause a clogged kitchen sink?
Yes. Overloading the disposal, grinding fibrous foods (celery, potato peels), or running it without adequate water flow can push debris into the drain line and cause clogs.
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