How to Fix a Leaking Tap in Winchester

Published September 2026 | Leaking Tap Repair Guide

What Causes a Tap to Leak?

Tap leaks nearly always trace back to worn or damaged internal components. Understanding which part has failed makes the fix much quicker and stops you buying parts you don't actually need.

The most common culprit in older properties is a worn rubber washer. Winchester has a lot of Victorian and Edwardian housing stock where traditional pillar taps are still in use, and this type of leak is something our engineers see regularly. The washer sits at the base of the tap spindle and presses against the valve seat each time you close the tap. After years of use it hardens, flattens, or splits, letting water seep through even when the tap appears fully off.

O-rings tend to fail on modern mixer taps and cause leaks around the spout base or handle rather than from the outlet itself. The O-ring is a thin rubber seal that keeps water contained as it moves through the tap body. Heat, age, and limescale all degrade it over time.

Cartridges are found in quarter-turn ceramic disc taps, which are now the most common type fitted in newer builds and recently renovated properties. A ceramic cartridge can crack or chip, or the rubber seals within it can fail. This type of leak typically produces a steady drip even when the handle appears fully closed.

The valve seat itself can corrode or develop pitting, particularly in areas with hard water. Hampshire sits in a moderately hard to very hard water zone, which means mineral deposits build up inside tap bodies over time. Even a brand new washer won't stop a drip if the seat it presses against is uneven or scaled.

Loose gland nuts or packing nuts can also let water seep up around the tap spindle rather than from the spout. This type of leak appears around the base of the handle and is sometimes mistaken for condensation until it gets worse.

Step-by-Step Diagnosis: Where Is Your Tap Actually Leaking?

Before reaching for a spanner, work out exactly where the water is appearing. The location tells you which component has failed and which parts to order.

Look at where the water appears first.

• Water dripping from the spout when the tap is off: worn washer or failed cartridge.
• Water seeping from around the base of the spout: failed O-ring on a mixer tap.
• Water appearing around the handle or spindle: loose gland nut or worn packing.
• Water around the tap base on the sink deck: the tap isn't sealed properly to the sink, or the supply connections beneath are loose.

Check the rate of the drip. A slow, intermittent drip is usually a washer or O-ring issue. A steady trickle that won't stop, even when you close the tap firmly, is more likely a cartridge failure or a corroded valve seat.

Identify your tap type before you do anything else. This determines which parts you need.

1. Pillar tap (separate hot and cold, round or crosshead handle) - almost certainly uses a rubber washer and seat washer.
2. Mixer tap with crosshead or capstan handles - likely a washer or O-ring depending on whether it's dripping from the spout or weeping at the handle.
3. Mixer tap with a single lever or quarter-turn handle - almost certainly a ceramic cartridge.
4. Monobloc kitchen mixer with a single body - cartridge-based, though O-rings around the spout are also a common failure point.

If you want to narrow things down before deciding whether to tackle it yourself, the Voltrade GoFIX diagnostic tool is worth using. Enter your tap type, approximate age, and where the leak is appearing, and it'll give you a clear read on whether it's a DIY fix or whether calling a Winchester plumber makes more sense.

Check your water pressure too. Unusually high mains pressure accelerates wear on washers, O-rings, and cartridges. If you've had problems across several taps in a short space of time, pressure may be a contributing factor rather than just age.

DIY vs Professional Repair: When to Do Each

Most tap repairs are within reach of a reasonably practical homeowner with the right parts and a bit of patience. That said, there are situations where calling in a professional is clearly the better call.

DIY is a reasonable option if:

• You can isolate the water supply to that tap using an isolation valve under the sink or at the main stopcock.
• The tap is a standard UK fitting with readily available replacement parts.
• The leak is from the spout on a traditional pillar tap. Replacing a washer is one of the more accessible plumbing jobs there is.
• You're comfortable disassembling and reassembling without forcing anything.

Call a Winchester plumber if:

• You can't locate or operate the isolation valve, or isolating the tap requires shutting off the water to the whole property.
• The tap is corroded or fittings won't budge. Forcing a stuck nut can crack older tap bodies or pull a compression fitting loose on the supply pipe.
• The valve seat is damaged. Regrinding or replacing a seat requires a specific tool that most homeowners won't have, and guessing at it usually makes things worse.
• The leak is at the supply connections beneath the sink rather than in the tap body itself.
• You've replaced the washer or cartridge and it's still dripping. This almost always means a more complex underlying issue.
• The tap is a specialist or designer brand where standard parts don't fit. A lot of high-specification kitchen taps require manufacturer-specific cartridges, and it's very easy to order the wrong one.

One thing worth saying plainly: a lot of DIY tap repairs fail not because the job is difficult, but because the wrong part gets ordered. If you're not certain of the tap brand, model, and cartridge size before you start, you'll likely end up with the water off, the tap dismantled, and a part that doesn't fit.

What a Qualified Plumber Will Do

When our engineers visit a property in Winchester for a leaking tap, the job involves more than just swapping out the obvious part.

1. Confirm the exact source of the leak. We check with the tap both on and off, and inspect beneath the sink for any signs of issues at the supply pipe connections or compression fittings.

2. Isolate the water supply. We locate the relevant isolation valve or advise on using the main stopcock if there's no local isolation in place.

3. Disassemble the tap correctly for its type. A ceramic disc cartridge tap dismantles very differently to a traditional pillar tap. Forcing the wrong sequence can crack the tap body or strip threads on older fittings.

4. Inspect all internal components. Rather than just replacing the most obvious part, we check the washer, O-rings, cartridge, and valve seat. If the seat is pitted or corroded, a new washer presses against an uneven surface and the drip returns within weeks. We can resurface the seat with a seat grinder where it's worth doing.

5. Replace the failed component with the correct part. Our engineers carry a range of standard washers, O-rings, and cartridges. For less common tap models, we'll source the part and return to complete the repair rather than fit something approximate.

6. Test under pressure and over time. After reassembly, we run the tap through several full cycles and leave it on for a period to confirm there's no drip from the outlet or weep from the handle or base.

7. Give you a clear view of any underlying issues. If water pressure is contributing to wear, or if the tap body itself is beyond economical repair, we'll tell you so you can make an informed decision about repairing versus replacing.

Costs and What Affects the Price

Tap repair costs in Winchester vary depending on the type of tap, the parts needed, and the complexity of the job.

Washer replacement on a traditional pillar tap is one of the cheapest plumbing repairs you can have done. The parts cost between 2 and 5 pounds. If a plumber carries out the work, expect to pay a call-out charge plus labour, which commonly brings the total to between 60 and 100 pounds depending on the plumber's rates and how long the job takes.

Cartridge replacement on a ceramic disc mixer tap is a slightly more involved job. The cartridge itself typically costs between 15 and 50 pounds depending on the brand and size - some premium cartridges for high-specification kitchen taps cost more. With labour, total costs commonly fall between 80 and 160 pounds.

O-ring replacement on a mixer tap is usually the quickest of the three. Parts are inexpensive, so the cost is mainly the call-out and labour, typically 60 to 100 pounds.

Full tap replacement, which makes sense when the tap body is badly corroded or when the repair cost approaches the cost of a new fitting, typically runs between 150 and 300 pounds including parts and labour. High-specification kitchen taps and branded bathroom fittings push this higher.

Factors that push the price up:

• Poor access beneath the sink or in confined bathroom spaces.
• Corroded or seized fittings requiring additional time to free.
• Non-standard parts that need ordering, meaning a second visit.
• Emergency or out-of-hours call-outs, which typically attract a premium of 50 to 100 pounds above standard rates.
• Valve seat damage requiring regrinding rather than a straight part swap.

Hampshire's hard water does accelerate wear on tap internals compared to softer water areas, which is worth factoring in when deciding whether to repair an ageing tap or replace it outright.

How to Prevent Tap Leaks in Future

You can't stop internal components wearing out indefinitely, but you can significantly slow the rate and catch problems early.

Don't overtighten the tap when closing it. This is the single biggest cause of accelerated washer wear. Taps only need to be closed to the point of resistance, not cranked shut. Overtightening compresses the washer hard against the seat repeatedly and speeds up wear considerably. It also damages ceramic cartridges over time.

Fit a scale inhibitor or consider a water softener. For properties on a hard water supply, limescale builds up inside the tap body and on the valve seat, leading to uneven seating and faster degradation of all the rubber components. A magnetic scale inhibitor fitted to the incoming supply is a low-cost way to slow this.

Check under sinks every few months. A slow drip at a compression fitting can go unnoticed for a long time and cause significant water damage to cabinetry before it becomes obvious. A quick visual check takes 30 seconds and can save a much bigger repair bill.

Service mixer taps periodically. Most manufacturers suggest servicing cartridge-based mixer taps every five to eight years depending on use and water quality. In harder water areas, erring towards the shorter end of that range is sensible.

Know when replacement is more practical than repair. If the same tap has needed attention more than twice in a few years, the body is likely corroding internally. At that point, continued repairs become a false economy compared to fitting a new tap.

Frequently Asked Questions

How much does it cost to fix a leaking tap in Winchester?

A washer replacement carried out by a plumber typically costs between 60 and 100 pounds including call-out and labour. Cartridge replacements on modern mixer taps commonly run between 80 and 160 pounds. Full tap replacement, where the fitting is beyond economical repair, usually comes to between 150 and 300 pounds depending on the tap and how accessible the supply connections are.

Can I fix a dripping tap myself?

For a traditional pillar tap with a worn washer, yes - it's one of the more achievable DIY plumbing jobs if you can isolate the water supply and the fittings aren't seized. Ceramic cartridge taps are manageable too, but only if you can identify the correct replacement cartridge before you start. If you can't isolate the water, the fittings are corroded, or you've already tried a fix and it hasn't held, call a plumber rather than pushing further.

Why does my tap still drip after I replaced the washer?

The most likely cause is a damaged valve seat. The seat is the surface the washer presses against when the tap closes, and if it's pitted or corroded from limescale, a new washer won't form a proper seal regardless of how well it's fitted. A plumber can inspect and reface the seat using a seat grinder, or advise on whether replacing the tap body makes more sense given the condition of the fitting.

How much water does a dripping tap actually waste?

A tap dripping at roughly one drop per second wastes around 15 litres of water per day, which adds up to approximately 5,500 litres over the course of a year. On a metered supply, that typically adds between 15 and 30 pounds to your annual water bill. A dripping hot tap also adds to your heating costs on top of that, making prompt repair a worthwhile saving rather than something to put off.

How do I find a reliable plumber in Winchester?

Look for plumbers registered with a recognised trade body such as the Chartered Institute of Plumbing and Heating Engineering (CIPHE) or who carry relevant accreditations. Checking reviews from local customers is worth doing, as a plumber who works regularly across Winchester will be familiar with the common tap brands fitted in local properties, the area's water supply characteristics, and the particular quirks of older housing stock in the city. Always ask for a written quote before work begins.