Garbage Disposal Troubleshooting in Colorado Springs: Hard Water, Resets, and When to Replace

Most garbage disposal problems have a fix that takes five minutes and costs nothing, and I’ve walked enough homeowners through this over the phone to know it’s rarely the disaster it feels like at 6pm with a sink full of dishes. The disposal that stopped working this morning usually isn’t broken. In most cases it has tripped its reset button or jammed on something it couldn’t grind. Before calling a plumber, work through the steps below in order.

Problem 1: Disposal Is Dead, No Sound at All

What’s happening: The disposal has no power, or its thermal overload has tripped. The thermal overload is a built-in safety switch that shuts the motor off when it gets too hot.

Fix it:

First, confirm the disposal switch is actually on and the outlet has power. Plug a phone charger into the outlet under the sink to confirm the circuit is live. If there’s power but no response from the disposal, find the reset button.

The reset button is a small red or black button on the bottom of the disposal. Reach under the sink and feel for it on the underside of the unit. If it has tripped, it will be popped out about 1/4 inch. Press it firmly until you feel it click back in.

Try the disposal again. If it hums but doesn’t spin, move to Problem 2. If it’s still completely dead after pressing reset, check the circuit breaker. Disposals usually have their own circuit or share one with the dishwasher.

If the reset button trips repeatedly after resetting, the motor is overheating due to a jam or the motor itself is failing.

The hard water note: Colorado Springs city water is soft to moderately hard, so this is less of an issue for most homes (I get asked about this a lot, and city water is almost never the culprit). If your home is on a private well (common in Black Forest, Falcon, and Monument), hard well water can build up mineral scale inside the grinding chamber over time. That extra buildup makes the motor work harder, so it can trip the thermal overload more often. If you’re resetting the disposal regularly, a deep cleaning may fix the problem before you need to replace the unit.

Problem 2: Disposal Hums But Doesn’t Spin

What’s happening: The motor is getting power and trying to run, but the grinding plate is jammed and can’t rotate. This is the most common disposal failure mode I see, by a wide margin.

Turn off the disposal right away. A motor straining against a jam builds up heat fast and can burn out. The thermal overload usually cuts the power first, but don’t count on it.

Fix it:

Look under the sink at the bottom center of the disposal. There’s a hex socket (a six-sided hole), usually 1/4-inch, made for exactly this. Most disposals come with a small hex wrench (Allen key) that lives in the drawer under the sink or taped to the disposal itself. If you can’t find it, a standard 1/4-inch Allen key from any hardware store works.

Put the wrench into the hex socket and work it back and forth, clockwise and counterclockwise, to turn the grinding plate by hand and free whatever is jamming it. You’ll feel resistance, then the plate will break free and turn more easily.

Once it’s free, reach into the drain opening with tongs or needle-nose pliers, not your hand, and remove whatever caused the jam. Common culprits: a bottle cap, a small utensil, a twist tie, a cherry pit. In homes on well water (common in Black Forest, Falcon, and Monument), hard water leaves mineral scale on the grinding parts, and sometimes a piece breaks off and jams the plate.

After clearing the jam, press the reset button on the bottom of the unit (it may have tripped during the jam), run cold water, and turn on the disposal.

Problem 3: Disposal Is Leaking

Leaks have three distinct locations, each with a different cause and fix.

Leak at the sink flange (top of the disposal where it meets the sink drain): The plumber’s putty or gasket seal between the disposal flange and the sink has failed. This is the most common leak location on older units. Fix: disconnect the disposal, remove the flange, clean away old putty, apply fresh plumber’s putty or replace the gasket, and reinstall. Straightforward but requires disconnecting the unit.

Leak at the dishwasher connection (side of the disposal): The dishwasher drain hose clamp has loosened or the connection has cracked. Tighten the hose clamp. If the fitting itself is cracked, the inlet needs replacing, which is a relatively minor job.

Leak from the body of the disposal: The disposal housing has cracked or an internal seal has failed. Body leaks can’t be repaired, so replace the unit (I never try to talk someone into fixing this one, it’s just not fixable). A disposal leaking from its body has reached the end of its life no matter its age.

Problem 4: Disposal Drains Slowly or Backs Up

What’s happening: The drain line downstream of the disposal is partially or fully blocked.

The disposal’s job is to grind food waste small enough to pass through the drain. It doesn’t dissolve what it grinds. If the drain line is narrowed by grease buildup, mineral scale, or a blockage, the ground waste has nowhere to go.

Fix it:

First confirm the clog is in the disposal drain and not the main sink drain. If both basins drain slowly (in a double sink), the blockage is past the point where the two lines meet: in the P-trap under the sink or further in the wall. The P-trap is the U-shaped bend in the pipe under the sink.

For a slow drain on the disposal side only, remove the P-trap under the sink and clean it. Have a bucket ready, because the trap holds water. In Colorado Springs homes, the P-trap often collects a mix of grease and food particles, and in homes on well water, mineral scale too. That mix is a common spot for the pipe to narrow and clog.

Five things that reliably clog disposal drain lines:

1. Fibrous vegetables (celery, artichoke leaves, corn husks). The fibers don’t grind cleanly. They wrap around the grinding parts or mat together in the drain.
2. Starchy foods (potato peels, pasta, rice). They grind into a paste that coats the drain walls and builds up.
3. Grease and cooking oil. They pour like a liquid when warm, then harden once they reach the cooler drain pipe. The hardened grease sticks to the pipe walls and catches everything else.
4. Coffee grounds. These fine particles combine with mineral deposits to form a stubborn paste, especially in homes on well water. A particular problem here.
5. Eggshells. The thin membrane inside the shell wraps around the grinding parts. The shell bits grind fine, but the membrane does not.

Run cold water, not hot, while using the disposal. Cold water keeps grease hard so the disposal can grind it. Hot water melts grease into a liquid that coats the drain line downstream.

Problem 5: Disposal Smells Bad

What’s happening: Food waste is building up on the grinding parts, in the grinding chamber, and on the underside of the rubber splash guard. The splash guard is the black rubber flap in the sink drain opening.

This happens in any disposal that isn’t cleaned regularly. It can be worse in homes on well water (common in Black Forest, Falcon, and Monument), where hard water mineral deposits leave a rough surface inside the grinding chamber, and food particles stick to that rough surface.

The cleaning steps:

Step 1, ice and rock salt: Pour two cups of ice and one cup of rock salt into the disposal. Run cold water and turn on the disposal. The ice and salt scour the grinding parts and chamber walls, scraping off the buildup. Let it run until the ice is gone.

Step 2, citrus: Cut a lemon or lime into quarters. Drop in two or three quarters while the disposal runs with cold water. The acid in the citrus cuts leftover grease, and the oils leave a fresh scent.

Step 3, splash guard: The underside of the rubber splash guard is the most-neglected part of the disposal and the biggest source of odor, and it’s the one step almost nobody thinks to do. Fold the flap back and scrub the underside with a stiff brush and dish soap. It has ridges that trap food particles and rarely get rinsed by the water flow.

Do this monthly and the disposal won’t develop a significant odor problem.

When Should You Replace vs. Repair a Garbage Disposal?

Replace when:

• The disposal body is leaking (not the connections, but the body itself)
• The motor hums but the hex wrench doesn’t free the jam after several tries
• The unit is more than 10–12 years old and keeps having problems
• It makes a grinding noise when running empty (a sign of worn grinding parts)
• It trips the thermal reset again and again with normal use, even after cleaning

Replacement cost in Colorado Springs: $200–$500 installed for a standard home unit, depending on motor size (1/2 HP for light use, 3/4 HP or 1 HP for heavy-use households). Swapping a disposal usually takes 30–60 minutes of labor, so most of the cost is the unit itself.

Hard water recommendation: If your home is on a private well with hard water (common in Black Forest, Falcon, and Monument), a stainless steel grinding chamber holds up better than a galvanized (zinc-coated) steel chamber over time. It’s worth asking for when you buy a replacement.

If you’ve worked through the steps above and it’s still not right, that’s usually where I get the call. For disposal installation or replacement in Colorado Springs, call (719) 243-9718.