Common Kitchen Plumbing Problems and How to Fix Them

Kitchen plumbing problems have a way of showing up at the worst possible time. A leaky faucet, a slow sink, a disposal that just hums — they all start small, and they all turn into bigger, more expensive headaches if you wait. For over 40 years, Richard T. Curley Plumbing & Heating has been fixing these exact problems in Hudson, Sudbury, Marlborough, Bolton, and across MetroWest MA. Most come down to a handful of worn parts and clogged lines. Here are the five we see most often, what you can safely do yourself, and exactly when to stop and pick up the phone.

After four decades of kitchen calls around MetroWest, the same handful of failures keep showing up. Worn washers, grease coating the inside of a drain, grit packed into an aerator, a jammed disposal, and a loose fitting under the cabinet. Here are the five common kitchen plumbing problems worth knowing, what you can reasonably handle yourself, and the point where it makes more sense to put the tools down and call.

A Faucet That Drips After You Shut It Off

A leaky faucet is almost always a worn washer or O-ring — the classic culprit on older two-handle faucets. Single-handle faucets have cartridges or ball valves inside, and those wear out too.

A drip isn’t really an emergency, but it won’t fix itself, and it can stain the sink basin and quietly damage the cabinet and floor below. Parts are cheap; the damage from ignoring it isn’t.

This is one of the easier repairs if you’re comfortable with it. Shut the water off first, take the old parts to the hardware store to match them, and take the faucet apart carefully. Two-handle faucets with traditional washers are generally the easiest to rebuild yourself.

When to call a plumber instead:

• The faucet is very old and the parts are seized or corroded
• You can’t find the right parts for your model
• The drip comes back within days of your fix
• Water starts leaking from the base of the faucet onto the counter (that’s a seal failure, not a worn washer)

A faucet repair or replacement is a quick job for a stocked truck — usually under an hour when the parts are already on board.

A Kitchen Sink That Drains Slowly

A slow sink means the pipe is narrowing — food, grease, fat, cooking oil, and soap scum building up on the walls. Sometimes food gets stuck right in the P-trap (that curved pipe under the sink). Homes with hard water see mineral buildup too.

Grease is the usual suspect: it goes down warm, cools in the pipe, and grabs everything else on the way. Three habits stop most clogs before they start:

• Scrape food into the trash, not the drain
• Wipe greasy pans with a paper towel before washing
• Keep a strainer in the sink

A plunger clears most soft blockages fast. If your sink has a removable trap, pull it and empty out whatever’s stuck. Chemical drain “unblockers” only buy you a week before the grease and soap scum on the pipe walls slows things down again.

Call a plumber when: both bowls of a double sink are backing up, other fixtures gurgle while the kitchen drains, the clog keeps coming back, or you get a sewer smell in the house. A recurring clog can point to a problem deeper in the drain line, which takes a plumbing cable and a proper diagnosis, not another bottle of chemicals.

Weak Water Pressure at the Kitchen Tap

Low pressure could be a one-faucet problem or a whole-house problem, and the fix is different for each.

Air in the lines after a shutdown can cause sputtering — usually running the tap a bit clears it. A stiff, failing valve cartridge can also choke off flow, and many single-handle faucets run on cartridges that wear out and leak as they go.

Before you only clean the kitchen aerator, check whether the other sinks are weak too. If it’s everywhere, the issue is likely bigger — a pressure regulator or a supply problem — and that’s one for a diagnosis. (No internal link needed here, or link to your contact page on “diagnosis.”)

A Garbage Disposal That Hums, Stalls, or Quits

Most disposal calls are jams. It hums but won’t turn, or just clicks, or won’t run at all.

Safety first: switch the power off at the wall before you touch anything, and never put your hand or a tool down into a running disposal. One bad call can send you to the hospital over a kitchen repair.

Most jams come from feeding the thing what it was never meant to eat — grease, fibers, stringy vegetables, and general trash. Grease is the worst: it cools and solidifies in the drain line and causes clogs far away from the sink.

If it hums but doesn’t turn, there’s usually an obstruction to clear. There’s a reset button on the bottom of most units worth trying first. If it won’t run at all, check the switch and the breaker before blaming the disposal.

Call a plumber if it still hums after you’ve cleared the obvious blockage, if water leaks from under the sink, or if it keeps tripping the breaker. If the clog returns, the disposal is probably done, and a replacement is a quick job — most plumbers carry the common models on the truck to finish it on the first visit.

Water Under the Sink Cabinet

There’s a lot of plumbing under a cabinet — supply lines, shutoffs, the P-trap, the drain, often a dishwasher connection. A slow leak there can run for months before you notice, dripping onto the floor below.

To find it: empty the cabinet, dry everything with a towel, then run the water while you watch. A drain leak shows up with the water running; a supply-line leak shows up under pressure even with the water off. Snug a loose fitting by hand, but if it needs more than about a half turn, stop — over-tightening plastic cracks it.

Call a plumber if the leak returns after tightening, if a fitting is corroded, cracked, or stripped, if water is staining the cabinet or ceiling below, if a shutoff won’t turn, or if you can’t even find the source. A slow leak under the sink can do thousands in damage over a $15 part.

When to Stop and Make the Call

Every kitchen plumbing problem falls into one of these five buckets. Handle the small stuff early, keep grease out of your drains, and know the signs of water damage before it spreads.

We service Hudson, Sudbury, Marlborough, Bolton, and the surrounding MetroWest communities. If you’d rather have it fixed once and for all, call Richard T. Curley Plumbing & Heating at (978) 562-3736. Family-owned since 1980, and the Shop on Wheels is stocked so we can fix most kitchen plumbing problems on the first visit.

Related Services: Kitchen Problems in Marlboro MA or Kitchen Problems in Bolton MA