A leaking tap is one of those small household problems that quickly becomes annoying — and expensive if left alone. In this article we’ll walk through simple, practical steps you can take to diagnose and fix common tap leaks, plus share sensible advice about when it’s best to call a pro. These tips are intended for everyday household taps and aim to save water, time and money while keeping things safe.
Simple Leaking Tap Repair Tips from Plumbing NZ
Start by identifying the type of tap and where the leak is coming from: the spout, the base, or the handle. Single-lever mixers and older two-handle taps have different internal parts (cartridges, washers, O-rings) and knowing which you have makes the repair quicker. Turn off the water supply at the isolating valves under the sink—or the mains if there aren’t any—and open the tap to drain residual water before you disassemble anything.
Gather a small toolkit: adjustable spanner, flat and Phillips screwdrivers, Allen keys for cartridge handles, replacement washers or cartridges, and some PTFE tape. Lay a towel in the sink and work over a shallow container to catch small parts so they don’t disappear down the drain. Take pictures as you remove components so reassembly is easier, and keep parts in order to spot worn washers, corroded valve seats or damaged O-rings.
For common drips at the spout, replacing the rubber washer or cartridge often solves the problem; for leaks at the handle, swapping O-rings or tightening the packing nut usually does the trick. Clean the valve seat and threads, remove mineral build-up with vinegar if needed, and avoid over-tightening which can damage soft seals. If the tap is very old, consider replacing the whole tap—modern replacements are often more water-efficient and less prone to leaks.
DIY Leak Fixes for Taps: tap repair advice
A slow drip can waste a surprising amount of water over time, so prioritize repairs even if the leak seems minor. Start with inexpensive fixes: replace washers or O-rings, lubricate moving parts with plumber’s grease, and reseat or replace cartridges. If the leak is caused by hard water deposits, soaking parts in a mild acetic solution (diluted vinegar) can restore a good seal before you replace components.
If you encounter persistent leaks after replacing seals, check for worn valve seats or corroded parts that won’t form a tight seal anymore. Tightening may be a temporary fix, but if threads are stripped or the valve seat is pitted, a full tap replacement or professional attention is better. Also inspect nearby fittings and supply hoses — sometimes the visible drip from the tap is actually caused by a loose or degraded connection under the sink.
Know when to call a licensed plumber: if the leak is at the base of the tap and involves the water supply, if you can’t isolate the leak, or if the plumbingwork involves soldering, replacing corroded pipes, or the house has complicated water systems. Professional plumbers can also advise on water-pressure issues and install long-lasting, compliant replacements. If you’re in New Zealand and want reliable local guidance or parts recommendations, the resources from Plumbing NZ in the headings above are a good place to start.
Fixing a leaking tap is often straightforward if you take the time to diagnose the issue, gather the right tools, and use quality replacement parts. Simple maintenance saves water and prevents more costly damage later, but don’t hesitate to call a professional when the repair is beyond basic DIY. With a little care and the right help, you can stop drips, reduce waste, and keep your taps working smoothly.