A Glendale disposal that hums, leaks or will not drain is usually jammed, worn at the seals or sitting on a clogged trap. A plumber can sort out which one and, in older homes, check the drain piping behind it. Call the number on this page to be connected with a local plumber in Glendale.

Is my older Glendale kitchen drain part of the problem?
It can be. The median Glendale home was built around 1985, so many kitchens have drain lines that have carried food waste, grease and coffee grounds for decades. Buildup inside the trap arm and branch line slows the sink even when the disposal is grinding well. If a new unit does not fix a slow drain, the line behind the wall is the next place to look, and a plumber can clear or camera it.
Glendale Water Services runs both the water and wastewater systems for most of the city. Its pretreatment program keeps an eye on what commercial and industrial customers send into the city sewer, and grease is a big part of that conversation for restaurants. At home, the same logic applies on a small scale: grease poured down a kitchen drain cools and sticks to pipe walls.
Do I need a permit to replace a disposal here?
Glendale's building Q and A says replacing drain or waste piping requires a permit. Swapping only the disposal and reconnecting it to the existing trap is a narrower job, so ask the plumber whether your work stays within that or crosses into new drain piping. Either way, the plumber handles the permit question with Building Safety, Codes and Services.
What should I try before I call?
- Turn the unit off and cut power at the switch or breaker.
- Press the red reset button on the bottom of the housing.
- If it hummed, use a hex key in the bottom socket to rock the plates loose.
- Look under the sink with a flashlight to see where any water is coming from.
If it still hums, keeps tripping or leaks from the body, stop there. Repeated restarts can overheat the motor.
One local note
Most Glendale homes are on city water and sewer, but addresses in the Hedgepeth Hills area between Loop 101 and Mohawk Drive, 47th to 51st Avenue, are City of Phoenix water customers. That does not change how a disposal is repaired, but it tells you which utility to call if you ever have a water service problem at the street. General Glendale Water Services questions go to 623-930-4100.
Garbage Disposals questions in Glendale
The disposal runs fine, so why does the sink drain slowly?
Do I need a permit to replace a garbage disposal?
What about cooking oil and bacon grease?
Nothing happens when I hit the switch. What should I check first?
More plumbing services in Glendale
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