Why Is My Aliso Viejo Dishwasher Not Draining?
Standing Water in the Tub? Here’s What to Know.
If your dishwasher finishes a cycle only to leave behind a pool of dirty water, you’re not alone. Drainage issues are among the most common dishwasher problems reported by Aliso Viejo homeowners — and they can often be traced back to a few specific causes.
Let’s walk through the most common reasons your dishwasher may not be draining and what to do next to keep your kitchen running smoothly.
A Clogged or Blocked Filter
The dishwasher filter traps food particles and debris to keep them from recirculating during the wash cycle. Over time, this filter can become clogged, especially in households with frequent use. Signs include:
Try removing and rinsing the filter (usually located near the base of the tub). In many Aliso Viejo homes, hard water buildup can also collect on these filters — so a vinegar rinse may help loosen residue.
Drain Hose Issues
The drain hose carries wastewater out of the dishwasher and into the sink drain or garbage disposal. Common problems include:
If you recently had work done under your kitchen sink, double-check the drain hose position. In some cases, repositioning the hose or flushing it with hot water can restore proper flow.
Garbage Disposal Backups
Many dishwashers drain through the kitchen sink’s garbage disposal. If the disposal is clogged or hasn’t been used in a while, it can cause a backup. Here’s what to check:
In homes throughout Aliso Viejo, this is a surprisingly common cause — especially after a new disposal installation.
Faulty Drain Pump
The drain pump moves water out of the dishwasher at the end of each cycle. If it fails, water can remain inside the unit. Warning signs may include:
Drain pump issues can occur with wear and tear over time, especially in older units or those run multiple times a day.
Check Valve or Air Gap Problems
The check valve helps prevent dirty water from flowing back into the dishwasher. An air gap (if installed on your sink) helps regulate drainage pressure. If either of these components is malfunctioning or blocked, drainage may slow down or stop entirely.
Not all homes in Aliso Viejo have air gaps, but they are required in some California plumbing codes for new installs — so this is worth checking if your dishwasher was recently upgraded.
Is It Safe to Run a Dishwasher That Isn’t Draining?
Running a dishwasher that doesn’t drain properly can lead to water damage, bacterial growth, and further motor or pump strain. If your dishwasher still holds standing water after trying the above steps, it’s best to pause use and schedule a repair inspection.
Need Help with a Dishwasher That Won’t Drain?
If your dishwasher won’t drain and troubleshooting hasn’t fixed the problem, reliable service is available here in Aliso Viejo. With support for all major brands and models — including GE, Whirlpool, Samsung, Bosch, and more — help is close by when your kitchen’s rhythm is interrupted.
Call today to schedule service and get your dishwasher back in working order — with professional support, right here in Aliso Viejo.