A Louisville disposal that hums, won't start or leaks usually has a jam, a tripped reset, a worn seal or a failing motor. A plumber can find the cause and check that the kitchen drain behind it is flowing. Call the number on this page to be connected with a local plumber in Louisville.

What happens when you call
The number on this page connects you with an independent plumber who covers Louisville. Expect questions about what the unit is doing and whether any other drains are slow. During the visit, the plumber cuts power, clears any jam, tests the reset and switch, and inspects the flange, drain connections and dishwasher hose. If the unit can't be saved, they'll go over replacement models that fit your sink, cabinet and electrical setup.
What affects the price
- Clearing and resetting versus a full replacement
- The motor size and build of a new unit
- Replacing worn drain parts, from flange to trap
- Electrical changes for hardwired units
- Cleaning a clogged kitchen line
- Cabinet space and access
Louisville conditions
Louisville is a former coal-mining town in southeastern Boulder County with a historic downtown. Hundreds of homes were rebuilt after the December 2021 Marshall Fire, so the city has a mix of older houses with decades-old drain lines and newer kitchens with recent plumbing. In the older homes, a slow disposal may be a sign of buildup in the line; in the rebuilt ones, the disposal itself is more often the issue.
The City of Louisville runs the sewer system, and wastewater is treated at the city-owned Louisville Wastewater Treatment Plant on the east side of town, which discharges to Coal Creek and reuses some effluent for park and golf course irrigation. If a backup looks like it's coming from the sewer rather than your kitchen, Public Works Operations takes calls at (303) 335-4750 on weekday business hours, with an on-call line at (303) 489-2301 after 3:30 p.m.
The city's Building Safety Division reviews permits and performs plumbing inspections. A plumber can tell you whether a disposal swap needs one. If the house was rebuilt after the fire, the permit records from that work may also tell the plumber what kind of drain pipe sits behind the cabinet.
Quick prep checklist
- Switch off and unplug the disposal
- Clear everything out from under the sink
- Don't use chemical drain cleaners
- Find the brand and model if you can
- Note any other slow drains or gurgling toilets
Garbage Disposals questions in Louisville
Who handles a backup that's coming from the public sewer main?
How do I tell a disposal problem from a sewer line problem?
Can a disposal be added to a sink that never had one?
What makes a disposal smell, and how do I stop it?
More plumbing services in Louisville
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