Why Is My Chatsworth Dishwasher Not Draining?
Clogged Drains, Faulty Parts, and What You Can Do Next
Standing Water in the Bottom of Your Dishwasher?
It’s one of the most common issues we hear from Chatsworth homeowners: “Why is there water left in the bottom of my dishwasher?” If your dishwasher isn’t draining, it doesn’t necessarily mean it’s broken—but it does need attention. Below are the most likely causes and how you can troubleshoot the problem before reaching out for professional support.

Common Causes of Dishwasher Drainage Problems
Clogged Filter
Most dishwashers have a removable filter that traps food debris. If it gets clogged, water can’t drain properly. Remove and rinse the filter thoroughly, then replace it securely.
Blocked or Kinked Drain Hose
The drain hose connects your dishwasher to the sink’s drainage system. If it’s pinched, blocked, or clogged, water can’t flow out. Check behind or beneath the unit for bends or obstructions.
Garbage Disposal Backflow
If your dishwasher shares a drain line with a garbage disposal, a clogged or recently installed disposal unit might block drainage. Make sure the knockout plug in a new disposal has been removed.
Failed Drain Pump
The drain pump forces water out during the drain cycle. If it’s burned out, clogged with debris, or not receiving power, it won’t function. This issue typically requires professional testing and replacement.
Faulty Check Valve
This one-way valve prevents water from re-entering the dishwasher after draining. If it’s stuck closed or damaged, water may remain in the basin.
Timer or Control Board Issues
If your appliance uses a mechanical timer or digital control board to manage cycles, it may fail to trigger the drain cycle. Signs include cycles ending too early or no pump noise during draining.
How to Safely Troubleshoot
When to Call for Professional Assistance
If cleaning the filter and checking the hose doesn’t solve the issue—or if you notice electrical issues, error codes, or strange noises—then it’s time for expert help. Drain pump failure, valve issues, or wiring problems are best diagnosed by a trained technician.
Call (818) 867-8259 now for dishwasher repair assistance in Chatsworth. We’ll help you take the next step with confidence and care.