Dishwasher Not Draining in West Hollywood — What I Check First

If your dishwasher is not draining in West Hollywood, the most common causes are a clogged filter, a blocked drain hose, a clogged garbage disposal connection, or a failed drain pump. The cycle ends but there is still water at the bottom of the tub. I check the simple causes first because most of the time they are the answer.

The problem

You open the dishwasher after a cycle and there is a pool of water at the bottom around the filter area. The dishes may be partly clean or fully clean — but the water is still sitting there. Sometimes it drains slowly during the next cycle, sometimes it does not drain at all.

Standing water is different from leaking. If water is on the floor, see standing water in the dishwasher for a related guide.

Possible causes

• Clogged filter and sump — food, grease, and bits of paper from labels block the filter and the area under it. This is the most common cause, especially in homes where dishes are not rinsed before loading.
• Blocked drain hose — the hose between the dishwasher and the disposal or drain has a kink or a clog inside.
• Garbage disposal not cleared after installation — when a new disposal is installed, a knockout plug must be removed before connecting the dishwasher hose. If the plumber forgot, the dishwasher cannot drain. We see this every few months in West Hollywood remodels.
• Failed drain pump — the small pump that pushes the water out has died or is jammed by debris.
• Air gap clogged — California code requires an air gap or a high loop. The air gap on the counter can clog with food and stop the drain.
• Drain hose high loop missing or low — without a proper high loop, dirty water from the sink can back into the dishwasher and prevent proper draining.
• Bad control board — less common, but possible when the pump tests fine and there is no clog.

What you can safely check before calling

1. Pull the bottom rack out and look at the filter area. If you see food, paper bits, or sludge, pull the filter, rinse it, and clear the sump.
2. Run the garbage disposal for 20 seconds with water. Sometimes food caught in the disposal blocks the dishwasher drain.
3. Check the air gap on top of the sink (the small chrome cylinder). Lift the cap and clean it out.
4. Look under the sink. The dishwasher hose should rise up to a high loop before connecting to the disposal or drain. If it just runs flat, water can back up.
5. Note the brand and model number so I can bring the right pump if needed.

How I check it

1. I confirm what cycle was used and whether the dishwasher made any noise during the drain step.
2. I remove the filter and inspect the sump area for clogs.
3. I test the drain pump. A clear hum without water moving usually means the pump is jammed by debris or the impeller is damaged.
4. I check the drain hose and the disposal connection — including whether the knockout plug was removed if a disposal was recently installed.
5. I check the air gap and high loop.
6. I explain what failed and the repair option.
7. After the repair I run a full cycle and confirm the dishwasher drains completely.

When to call a technician

Call us if you cleaned the filter, cleared the disposal, and checked the air gap, and the dishwasher still has water at the bottom. The next likely cause is a failed drain pump or a clogged hose, and both need a service visit.

For West Hollywood apartments, especially in older buildings, the drain line itself can be the problem. We can usually tell quickly whether the issue is the appliance or the plumbing.

Local service note

WeHo Appliance Repair helps with dishwasher repair in West Hollywood, Beverly Grove, Fairfax, Pico-Robertson, Beverly Hills, Hollywood, Miracle Mile, and nearby areas. Same-day visits are often available because we are local and work nearby.

FAQ

Why is there water at the bottom of my dishwasher?
A small amount of water in the sump area at the bottom is normal between cycles. A full pool of water means the dishwasher did not drain — usually a clogged filter, drain hose, or drain pump.

I just had a garbage disposal installed and now the dishwasher will not drain. Why?
The plumber likely forgot to remove the knockout plug on the disposal. Without removing it, the dishwasher hose has nowhere to send the water. This is a quick fix.

Can I run the dishwasher with water at the bottom?
You can, but the next cycle will mix dirty water from the last load with the new dishes. Better to clear the water first.

What is an air gap and do I need one?
The chrome cylinder on top of the sink. It prevents dirty drain water from backing into the dishwasher. California code requires either an air gap or a proper high loop.

Is a drain pump replacement expensive?
It is a common, repairable part. The price depends on the brand and access. I explain the cost before starting.

How soon can you come?
Same-day visits are often available in West Hollywood because we are local and work nearby. Call 323-285-0520 for the soonest time.