In Annandale, disposal trouble usually means a jam, a failed seal or a clog in an older kitchen drain right behind the unit. A plumber can test both the disposal and the line so you do not replace a working unit to fix a pipe problem. Call the number on this page to be connected with a local plumber in Annandale.
Annandale conditions that matter
Annandale grew quickly after World War II and has one of the older housing stocks in Fairfax County, with a median build year around 1968. Many homes still have original-era drain piping behind the kitchen wall, and decades of grease and food paste narrow those lines. When a disposal is replaced in a house of that age, it is worth checking the trap, the trap arm and the connection into the wall at the same time.
Water comes from Fairfax Water, which draws from the Potomac River and the Occoquan Reservoir. Its Potomac plant reports total hardness of about 70 to 185 mg/L, roughly 7.5 grains per gallon on average, so mineral film on the flange and baffle is normal over time.
Fairfax County runs the public sewer. The County owns the mains, while the private lateral from the house to the main belongs to the homeowner. For a backup when no fixtures are running, the County's 24-hour line is 703-323-1211.
Repair or replace in an older kitchen
| What you see | Repair fits when | Replace fits when |
|---|---|---|
| Unit hums | One stuck object caused it | It hums again after clearing |
| Slow sink | The trap or drain arm is clogged | The unit grinds poorly as well |
| Rim leak | The flange putty or gasket dried out | The mounting assembly is corroded |
| Bottom leak | Seldom repairable | Internal seal has let go |
| Old drain fittings | They are sound and line up | They crack when disturbed |
Signs that call for a plumber
- Repeated tripping of the reset button
- Gurgling from the sink when the dishwasher drains
- Water staining on the cabinet floor
- A grinding noise that does not stop when the chamber is empty
Timing notes
Older Annandale kitchens see more trouble around big holiday meals, when peels, grease and starches all go down at once. Spread the load, run cold water well after grinding, and keep grease out of the sink. In spring, Fairfax Water normally switches from chloramine to free chlorine for a few months, which can change the taste of tap water but does not affect the disposal.
Garbage Disposals questions in Annandale
Why does the sink drain slowly when the disposal grinds fine?
How can I tell if the clog is past the disposal and in the main line?
Is a permit needed to swap out a garbage disposal?
Why does the sink smell even after the disposal runs?
More plumbing services in Annandale
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