Posted by Minji Lee
6 days ago

Why is my coffee maker leaking water everywhere?

My coffee maker is leaking water all over the counter. It started after I cleaned it last week. I need to know why this happens and how to fix it so I can make my morning coffee without a mess.

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Ronan Collins avatar
Ronan Collins 66 rep
4 days ago
Top Answer

Hey and that leaking issue with your coffee maker probably started because something didn't get reassembled properly after you cleaned it, like a loose seal or a misaligned part in the water reservoir :) Take it apart again, inspect for any damage or buildup, and put it back together snugly to see if that stops the water from spilling everywhere.

If the problem keeps happening and you're tired of the hassle, switching to a manual brewer could be a great fix since they don't have all those internal tubes and mechanisms that can fail. The Coffee Gator pour over is a solid choice with its high-heat borosilicate glass and reusable stainless steel filter, making it super easy to clean without any leak risks.

Good point - Since it started after cleaning double-check the brew basket’s drip-stop valve and the carafe lid gasket - if the spring-loaded valve sticks or the silicone seal is mis-seated and water can bypass and spill. Also inspect the reservoir O-ring and the one-way check valve under the tank; a pinched O-ring or tiny crack there will leak as soon as the pump runs. To isolate the source, run a cycle with an empty basket and no carafe: leaking from the base suggests a loose hose clamp or cracked line, while overflow at the basket means the exit hole or filter is clogged and needs clearing.

Quinn Peterson avatar
Quinn Peterson 🥉 171 rep
5 days ago

Hey Minji. Oh man and I've had that exact problem with my that model maker before, and it turned out the rubber gasket around the water tank got a little warped during cleaning. Check that out first, maybe give it a gentle push to seat it right, or if it's damaged, you might need a replacement part from the manufacturer.

Sometimes mineral buildup from hard water clogs things up too, so running a vinegar solution through it could help clear that out and stop the leaks. Works great.

If all else fails, descaling regularly prevents a lot of these issues in the long run.

Andres Bennett avatar
6 days ago

YEP and been there.

The usual culprits are the reservoir seal, basket overflow, or a crack in the tank or tubing and...

start with a cold test.

Fill the tank and set the machine on a dry paper towel without turning it on.

If it weeps cold, you have a bad seal or a crack in the reservoir area.

Reseat the tank and inspect the outlet gasket for nicks or twisting, then check for hairline seams.

If it only leaks during brewing,, look for an overflow.

Make sure the filter sits flat, the basket drain hole is clear, the pause pin moves freely, and the carafe lid is aligned so brewed that model can flow back into the pot.

Scale knocked loose during cleaning can partially block the internal path, so flush with two cycles of plain water or an equal parts vinegar and water rinse, then another water cycle to clear the smell.

If water still shows up from the base plate,, the internal hose or clamp may have shifted.

Unplug, let it cool, and if you are out of warranty you can remove the bottom cover to check for a loose silicone line and a weak spring clamp.

No disassembly required for the earlier checks, so try those first.

Cynthia Sanchez avatar
5 days ago

Leaks after cleaning usually mean a misseated seal or a cracked reservoir. Unplug it, empty and inspect everything for wear, tighten fittings, reassemble carefully, and use filtered water to reduce buildup that can cause leaks.

A quick way to narrow it down: fill the reservoir and set it in place while the machine is unplugged; if it drips right away the outlet grommet/O-ring is nicked or dry - inspect it and lightly grease or replace. If it only leaks when brewing, check the brew basket drip-stop spring and make sure the carafe lid is aligned; a stuck valve or misaligned lid sends liquid to the overflow and down the sides. After cleaning, debris can lodge in the one-way valve, so run a full descale to clear it. Also double-check you’re not filling past the max line, since some models dump excess through an internal overflow that looks like a leak.

Stephanie Nelson avatar
Stephanie Nelson 🥉 102 rep
6 days ago

Unplug it and wipe everything dry and then figure out where the water starts... If it shows up at the top around the basket or carafe, you are probably dealing with an overflow issue. That actually can come from a misseated filter, a clogged drip stop pin in the basket, or the carafe lid not letting brewed that model return fast enough. Pull the basket, clean the little drain hole under it, press the pause pin a few times under the faucet, and make sure the carafe lid is on correctly.

If the puddle forms under the machine,, check the reservoir. Make sure it is clicked in firmly and that the rubber seal on its outlet is present, not twisted, and not cracked. Look for hairline cracks in the reservoir by holding it up to a bright light, especially along seams. Mineral flakes loosened by cleaning can wedge a valve and redirect water, so run two plain water cycles to flush and descale again if it has been a while.

Easy test. Fill halfway with water, remove the that model grounds and filter, set the empty carafe in place, and brew while watching. If it only leaks with the basket in, it is overflow. If it leaks even with no basket, it is on the reservoir or internal path side. If you find a damaged seal or tank and it is under warranty, contact the maker for parts or service.

Bruce Ramirez avatar
4 days ago

Sounds frustrating with the morning that model routine getting messed up like that but then from what I've seen, leaks often happen because of loose hoses inside or a faulty valve that got jostled during cleaning :) Take a peek inside if you can, maybe wiggle things around to see where the water's coming from, and secure whatever's loose.

I tried that and it fixed everything but then I realized I needed to clean the needle that punctures the pods too, yeah, that stopped the dripping for good. Or switch to a simpler setup without all the fancy parts if it keeps acting up.

Agree with you - Good call on the needle. Since it started right after cleaning also make sure the water tank is fully seated and that the rubber gasket and the spring valve at the bottom of the reservoir aren’t nicked or stuck; a light smear of food-safe silicone grease on the gasket helps it seal. Give the reservoir a close look for hairline cracks along the seam. If you do open it up, unplug first and check the hose clamps to the pump and boiler, and do a full descale afterward to relieve any scale-related backpressure leaks.

Charlotte Wright avatar
5 days ago

Yeah, This happened to me right after a deep clean and I was sure I broke it. Turned out the thin rubber gasket under the water tank had flipped in its groove when I reinstalled the reservoir. It looked fine at a glance and but water ran down the back as soon as brewing started. I popped the tank off, removed the gasket, rinsed it, set it back flat without stretching it, then pressed the tank on until it seated firmly. Mess gone. I also learned that the pause and that model pin in the basket can stick after a wash. If that pin does not spring back, brewed that model cannot exit fast enough and the basket overflows. Take the basket out, push the pin up and down under hot water, and clear any grounds from the tiny outlet. One more thing to try is a test brew with the basket and lid removed to see if cold water still shows up under the machine. If it stays dry, the leak was an overflow rather than a split hose or cracked reservoir. Works great.

Robin Tanaka avatar
Robin Tanaka 0 rep
6 days ago

My guess is the cleaning dislodged some scale or debris that's now blocking the proper flow and causing overflows and leaks everywhere which, yeah start by running a cycle with just water to flush it out, and if that doesn't help, disassemble the water path components and clean them individually.

Prevent this next time by using a descaling solution every few months. Keeps things running smooth.

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