A tap that drips once every few seconds can waste more water than most people expect. If you want to fix a dripping kitchen tap, the right repair starts with finding where the water is actually escaping. A drip from the spout points to an internal sealing problem. Water around the handle, base, or under the sink can mean a different fault altogether.
For homeowners, landlords, and property managers, it is worth dealing with the issue early. The repair is often straightforward, but leaving it can lead to water stains, swollen cabinetry, mold, higher water bills, and a more inconvenient repair later.
First, identify the type of kitchen tap
Kitchen taps look similar from the outside, but their internal mechanisms vary. Knowing the tap type helps you buy the correct parts and avoid dismantling more than necessary.
A traditional two-handle tap commonly uses a compression washer. When you turn the handle closed, the washer presses against a valve seat to stop the water flow. These taps often drip because the rubber washer has worn, hardened, or split.
A single-lever mixer tap usually contains a cartridge. The cartridge controls both water temperature and flow, and it may need replacing when water continues to drip after the handle is shut off. Some modern mixer taps use ceramic disc cartridges, which are durable but can still fail if mineral buildup or debris scratches the internal surfaces.
Pull-out spray taps, filtered-water taps, and older specialty fixtures can have brand-specific components. In these cases, taking clear photos and noting the tap brand before purchasing a part can save a wasted trip to the hardware store.
Before you fix a dripping kitchen tap, isolate the water
Do not start by removing the handle. Turn off the hot and cold isolation valves beneath the sink first. These small valves are normally fitted to the supply lines and can be turned clockwise until closed. Then open the tap to release remaining water and confirm that the supply is off.
If the isolation valves are stiff, leaking, or missing, stop there. Forcing an old valve can create a larger leak beneath the sink. You may need to shut off the property’s main water supply, or arrange for a handyman or plumber to replace the isolation valves before proceeding.
Put the sink plug in place and lay a cloth over it. Small screws, clips, and washers have a habit of finding the drain at exactly the wrong time. Keep a towel nearby as well, especially if the cabinet base is already damp.
Repairing a two-handle tap with a worn washer
With a standard compression tap, the usual culprit is the washer at the bottom of the valve stem. Start by removing the decorative cap on the handle. It may pry off gently with a small flat screwdriver. Remove the retaining screw, lift off the handle, and use an adjustable wrench to loosen the valve assembly.
At the end of the valve stem, you should find a small washer held in place by a screw. Check for cracking, flattening, or a rough edge. Replace it with a washer of the same size and shape. A washer that is only slightly too large or too small may not seal correctly.
Before reassembling, inspect the valve seat inside the tap body. If the seat is pitted, rough, or corroded, a new washer may not solve the drip for long. Some valve seats can be resurfaced, while others need replacement. This is one point where a quick repair can turn into a job for an experienced professional.
Reinstall the valve, fit the handle, turn the water back on slowly, and test the tap. Avoid overtightening the handle. Closing it with excessive force damages washers faster and can make the next repair harder.
Fixing a dripping mixer tap with a cartridge
A single-handle kitchen tap is usually repaired by replacing the cartridge rather than changing an individual washer. The handle may have a small access cap that hides a set screw. Once the screw is loosened, the handle can be lifted off to reveal a retaining nut or clip holding the cartridge in place.
Take a photo before removing anything, particularly the orientation of the cartridge. Many cartridges only fit one way, and reinstalling one incorrectly can reverse hot and cold water or prevent the handle from moving properly.
Remove the cartridge and inspect it for damaged seals, cracks, or mineral deposits. In most cases, replacement is more reliable than trying to clean and reuse a worn cartridge. Use the old part to match the new one, including its height, diameter, stem shape, and locating pins.
Clean debris from the tap body with a soft cloth before installing the new cartridge. Do not scrape aggressively inside the housing, as damage to the seating surface can cause continued leaking. Reassemble the tap, restore the water supply, and run both hot and cold water for a minute to clear any trapped air.
When the leak is not coming from the spout
Not every kitchen tap leak is a dripping-tap repair. Water appearing around the base of the fixture often indicates worn O-rings or seals on the swivel spout. Water leaking from beneath the handle may come from a cartridge seal, packing nut, or cracked internal component.
A leak under the sink needs prompt attention. Check the flexible supply hoses, isolation valves, and connections to the tap. Dry the area completely, then run the tap while watching with a flashlight. This makes it easier to identify whether the water is coming from a fitting, hose, waste pipe, or the tap itself.
If the cabinet floor is soft, discolored, or showing signs of swelling, avoid simply drying the surface and moving on. Hidden moisture can damage particleboard cabinets and create mold conditions. The source should be repaired, the area dried thoroughly, and damaged materials assessed before the problem spreads.
Common mistakes that make tap repairs harder
The biggest mistake is buying a generic repair kit without confirming the tap type. Many washers and cartridges look close enough to fit but will not create a proper seal. A second common issue is using too much force. Overtightened nuts can crack plastic cartridges, damage threads, and make future maintenance difficult.
It is also tempting to use plumber’s tape on every threaded connection. Tape is useful on tapered pipe threads, but many tap fittings seal with a washer, O-ring, or compression fitting instead. Adding tape where it does not belong can interfere with the seal rather than improve it.
Finally, do not ignore poor water pressure, a loose tap base, or a stiff handle after the drip stops. These can signal related wear that is better addressed in the same visit, especially in rental properties or busy commercial kitchens where downtime creates disruption.
When to call a handyman
A confident DIY repair can make sense when the isolation valves work, the leak is clearly from the spout, and you can identify a matching washer or cartridge. Calling for help is the sensible option when the tap is seized, the supply valves leak, the fixture is loose, the cabinet has water damage, or replacement parts are difficult to source.
For Auckland property owners and managers, Icon Handyman can assess the tap, replace worn components where appropriate, and address the surrounding maintenance issues without adding unnecessary hassle. You receive clear communication, tidy work, and a practical recommendation if a repair is no longer the cost-effective choice.
A kitchen tap should shut off cleanly, operate smoothly, and leave the cabinet below completely dry. Taking care of a small drip now protects the finish, function, and value of the kitchen you rely on every day.
