When a Lawrenceville disposal hums, does nothing or drips under the sink, the cause is usually a jam, a tripped reset, a failed seal or a worn motor. A plumber can repair or replace it and check the drain line behind it. Call the number on this page to be connected with a local plumber in Lawrenceville.

When you reach a plumber
The number on this page connects you with an independent plumber who covers Lawrenceville. Describe the symptom plainly, mention the unit's age and whether a dishwasher drains through it, and say whether any other fixtures are slow. The plumber will check power and the reset, free a jammed plate, trace any leak, and run water to test the drain before recommending repair or replacement.
What the cost depends on
- Scope: quick fixes cost far less than a new unit.
- Model: motor size and construction.
- Parts: mounting ring, hoses, trap and tailpiece.
- Electrical: plug-in or hardwired.
- Drain: clearing a kitchen branch adds labor.
Lawrenceville's homes and utilities
Lawrenceville, the Gwinnett County seat, has a mix of older homes near the historic square and newer subdivisions farther out. Census survey figures give a median build year of 1988, with about 30% of homes from before 1980. In the older group, the kitchen drain may have narrowed with decades of buildup, so a plumber will often check flow after fixing the disposal.
Water service moved from the city to Gwinnett County Department of Water Resources at the end of 2020, and Gwinnett DWR also handles sewer; its 24-hour line to report a problem is 678.376.7000. The city still provides natural gas, electric and sanitation. Lawrenceville's Building Official is part of Planning & Development (678-407-6583); the city's specific rules on disposal permits weren't confirmed, so ask your plumber whether one applies.
Lawrenceville households in older homes near the square can protect their drains by grinding small batches, letting cold water run well after the motor stops, and keeping grease, rice and coffee grounds out of the sink. In the newer subdivisions, the same habits mostly protect the disposal itself, since builder-grade units jam on stringy and starchy scraps. If the unit hums and stops, cut its power before reaching for the hex wrench underneath, and never put a hand in the chamber.
Prep list
- Switch off the disposal and cut its power.
- Empty the sink cabinet.
- Don't use chemical openers.
- Find the model label if you can.
- Pause dishwasher use until it's fixed.
Garbage Disposals questions in Lawrenceville
Who do I call if the backup is in the sewer and not the disposal?
Why does the sink still drain slowly after the disposal was fixed?
Which kitchen scraps cause the most disposal jams?
What should I tell the plumber when I call about a disposal?
More plumbing services in Lawrenceville
Garbage Disposals nearby
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