Tempe is one of the older suburbs in the Valley, so a disposal call here often involves both the unit and an aging kitchen drain. Jams, worn seals and scale buildup are the usual culprits. Call the number on this page to be connected with a local plumber in Tempe.

Why do Tempe kitchen sinks back up even with a working disposal?
Tempe is a landlocked inner-ring suburb, and the median home was built around 1983. Many houses in the neighborhoods south of the ASU campus have kitchen drain lines that have taken decades of food waste and grease. A disposal grinds scraps finer, but it does not dissolve them, and the particles settle where the pipe runs flat. If the sink drains slowly no matter how well the unit runs, the branch line is the likely bottleneck, and a plumber can clear it before you spend money on a new disposal.
How much does Tempe's hard water matter?
More than people expect. The city's water report lists an average hardness of about 10.9 grains per gallon, with readings across the system ranging from 9.5 to 29. Hard water leaves white crust on the sink flange and around the dishwasher inlet, and over time that scale helps break down the rubber seals. Leaks at the top or side of an older unit are often a sign of this. A plumber can reseat the flange or replace worn fittings, and a water softener cuts down on the buildup going forward.
Will replacing my disposal need a Tempe permit?
Tempe's homeowner guide says separate plumbing permits are required when applicable, and that leak repairs are exempt only when they do not involve replacing or rearranging valves, pipes or fixtures. A disposal swap that also reroutes drain piping may cross that line. The plumber can check with the Community Development permit counter at City Hall if your job goes beyond a straight replacement.
A local note
The City of Tempe Water Utilities Division provides water, wastewater and stormwater service, so your kitchen drain connects to the city sewer. If you have a water emergency at the street, Tempe runs a customer support line at 480-350-2837. For anything under your sink, a plumber is the right call.
Disposals in shared or rental kitchens tend to see rough use: utensils, bottle caps and grease from several cooks. If you own a rental in Tempe, a short note to tenants about what stays out of the unit can save a service call, and a sturdier replacement model may last longer under that kind of use.
Garbage Disposals questions in Tempe
The disposal runs fine, so why does the sink drain slowly?
Does hard water affect a garbage disposal?
Do I need a permit to replace a garbage disposal?
Is it safe to reach into the disposal to clear a jam?
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