Garbage Disposal Repair & Replacement in Atlanta, GA

A wet cabinet floor under the kitchen sink often sends Atlanta homeowners looking into garbage disposal repair and replacement. The disposal hangs in the middle of several connections, so it gets blamed for leaks it did not cause and overlooked when it really is the source. Where the drip begins tells you most of what you need to know about the fix.

Dry everything first, then watch

A leak is far easier to trace on dry surfaces. Empty the cabinet, wipe the disposal and the pipes with a towel, and lay a shallow pan or a sheet of paper towel underneath so each drop shows. Then test one thing at a time:

1. Plug the sink, fill it a few inches and look at the top of the disposal where it meets the sink.
2. Pull the plug and watch the side outlet and the pipe running to the wall as the water drains.
3. Run the disposal with cold water and check the bottom of the housing.
4. If a dishwasher drains through the unit, run a short cycle and watch the hose connection.

A few drops of food coloring in the sink water make slow drips easier to spot.

Leaks at the top: the sink flange

The flange is the metal ring you see in the sink drain. Underneath, it is sealed with plumber's putty or a gasket and held in place by a mounting ring. Over time the putty dries out, or the mount works loose from vibration and the occasional knock from a cleaning bucket. A leak here appears when the sink is full. The fix is to lower the disposal, clean the opening, reseal the flange and tighten the mount, which in most cases is a repair rather than a replacement.

Leaks at the side: drain and dishwasher connections

Most units have two connections on the side. The discharge tube carries ground waste to the trap and seals with a gasket held by bolts or a clamp; a worn gasket or loose bolts let water escape as the sink drains. The dishwasher inlet takes the drain hose, secured by a clamp that can loosen or rust. Both are usually straightforward repairs, although a cracked plastic outlet on an older unit can tip the decision toward replacement.

Leaks at the bottom: usually the end of the unit

Water dripping from the bottom of the housing, or around the reset button, generally means the internal seals have failed or the grinding chamber has corroded through. Disposals are not designed to be opened and resealed, and replacing their internal parts seldom makes economic sense, so this is the leak that most often ends with a new unit. If the cabinet floor has stayed wet for a while, check whether the particle board has swelled; soaked material may need drying or removal, which is where water restoration comes in.

When the disposal is not the source

Plenty of under-sink puddles start somewhere else. The faucet's supply lines and shutoff valves, the faucet body and the trap below the disposal can all drip. If none of the connections leak during testing but the cabinet keeps getting wet, or there is dampness behind the wall or under the floor, the problem may be hidden, and water leak detection is the better first step. A trap that weeps only when the sink drains at full flow can point to a partial clog downstream, which belongs to drain repair. For the bigger picture, see how Alpha handles garbage disposal repair across Georgia.

Atlanta's plumbing permit rule

Atlanta spans parts of Fulton and DeKalb counties. The city's Office of Buildings calls for a permit to install, repair or replace plumbing, and homeowners may apply for their own. Resealing a connection seldom raises the question, but if a kitchen job grows beyond the disposal, the Office of Buildings can tell you what applies before the work begins.

Disposal leak questions from Atlanta kitchens

Can I just tighten the mounting ring to stop a flange leak?

Sometimes. If the disposal turns on its mount by hand with the power off, the ring has worked loose, and snugging it up may be the whole fix. If the unit is already tight, the putty under the flange has probably dried and cracked, and cranking harder only squeezes the old seal. The lasting repair is to lower the unit, clean the opening and reset the flange.

Why does my disposal leak only when the dishwasher runs?

That pattern points to the dishwasher drain connection. The hose clamp may be loose or corroded, the hose end may be cracked, or the inlet on the disposal may be damaged. Another possibility is a partial clog in the disposal or trap that backs dishwasher water up until it finds a weak joint. Watching the connection during a drain cycle usually reveals which it is.

Should I keep using the sink while the disposal leaks?

Use it as little as possible. Each use adds water to the cabinet, and particle board swells quickly once it stays wet. Put a pan under the unit, hold off on running the disposal and the dishwasher, and rinse dishes elsewhere if you can. If the leak is steady rather than a drip, switch off power to the disposal and keep the sink dry until the connection is fixed.

Report where the water shows up

Once you know whether the drip starts at the top, side or bottom, call Alpha Plumbing and Sewer at (404) 409-4448. Depending on what the testing showed, Alpha can reseal the connection or set a new unit in your Atlanta home.