A dripping tap is easy to ignore. The sound becomes background noise, you tell yourself you’ll sort it at the weekend, and then six months pass. But that steady drip is costing you money on every water bill, and in most cases the fix is straightforward — it just needs someone to actually do it.
Catalyst Home Services provides tap repair across London, covering everything from a worn washer in a bathroom pillar tap to a faulty cartridge in a kitchen mixer. Most jobs are completed in a single visit. Whether you’re in Southwark, Lambeth, or anywhere across the city, a qualified engineer can be with you the same day.
Call +44 7400 265421 or book a plumber online to get it sorted.
The Real Cost of a Dripping Tap
A tap dripping once per second wastes roughly 30 litres of water a day — that is over 10,000 litres a year from a single tap. For households on a water meter, that is a measurable and unnecessary addition to every quarterly bill.
The repair in most cases takes under an hour and costs a fraction of what the ongoing waste adds up to. Getting a dripping tap fixed promptly is simply the more cost-effective choice, and it protects the tap body and sink area from the slow water damage that persistent leaks cause over time.
Common Tap Problems We Fix
Tap faults follow recognisable patterns, and most of them have straightforward causes. Here is what we deal with regularly across London properties:
- A tap that drips constantly from the spout — almost always caused by a worn washer, a failed O-ring, or a damaged ceramic disc that is no longer sealing properly.
- Water leaking from the base of the tap or around the tap body — usually points to a failed O-ring or a worn gland packing that has degraded over time.
- A tap handle that is stiff or difficult to turn — commonly caused by limescale build-up inside the tap mechanism, which is particularly common in hard water areas like London.
- A tap that will not shut off fully — often a sign that the washer is worn down flat or the ceramic cartridge has cracked and is no longer closing the valve seat.
- Reduced water flow from a specific tap — can indicate a blocked aerator, a partially closed isolation valve, or internal scale build-up restricting the flow.
- A tap that makes noise when running — vibration or whistling from a tap is typically caused by a loose washer, a worn jumper valve, or water hammer in the supply pipe.
- A mixer tap where hot and cold are not separating correctly — points to a failed cartridge inside the mixer body that is allowing water to cross over between supplies.
- A tap head that spins freely without controlling the flow — the spindle or headgear has stripped, meaning the mechanism that opens and closes the valve is no longer connecting properly.
How We Repair Taps & Faucets
Most tap repairs follow a clear process, and in the majority of cases the job is done and dusted in a single visit.
Step 1 — Isolate the Water Supply Before anything is dismantled, the water supply to the tap is shut off using the isolation valve beneath the fitting or, where necessary, the property’s stopcock. This is a standard precaution that takes seconds.
Step 2 — Dismantle and Inspect The tap head and body are carefully removed to expose the internal components. We identify exactly what has failed — whether that is a worn rubber washer, a cracked O-ring, a ceramic disc that has chipped, or a cartridge that has reached the end of its life.
Step 3 — Source the Correct Part Engineers carry a range of common washers, O-rings, cartridges, and ceramic discs on the van. For less common or brand-specific parts, we source them quickly and return to complete the job as soon as they arrive — usually the same or next day.
Step 4 — Carry Out the Repair The faulty component is replaced, the tap is reassembled, and all connections are checked. Where limescale has caused internal damage, the relevant surfaces are cleaned before the new part is fitted.
Step 5 — Test and Confirm The water supply is restored and the tap is tested through its full range — on, off, and at different flow rates. We also check for any residual drip or seepage before considering the job complete.
If the tap body itself is corroded, cracked, or too old to hold a repair reliably, we will tell you honestly and advise on replacement options before any additional costs are incurred.
Types of Taps We Repair & Replace
Different tap types have different failure points. Here is what each involves.
Mixer Taps
Kitchen and bathroom mixer taps are the most common type in modern London homes. The monobloc design — one body, one spout, separate hot and cold controls — uses a ceramic cartridge that can wear out over time. When the cartridge fails, the tap either drips, loses pressure, or stops controlling temperature properly. We carry cartridges for a wide range of mixer tap brands and can replace them without having to source the entire tap body.
Pillar Taps
Traditional hot and cold pillar taps use a washer-and-valve-seat mechanism that is simple but wears predictably. The rubber washer compresses against the valve seat each time the tap is closed, and over years of use the washer degrades and the seat can develop pitting. In most cases the washer is replaced and the seat is reground or refaced — a job that costs far less than a full tap replacement.
Bath Taps & Shower Mixer Taps
Bath taps take considerable use and are often paired with an overhead or handheld shower, which puts additional demand on the mixer cartridge. Thermostatic shower mixers have a separate thermostatic cartridge that controls temperature, and when this fails the water may run too hot, too cold, or refuse to hold a consistent temperature. We replace thermostatic cartridges across all major shower mixer brands and can advise if the unit itself has reached the end of its service life.
Outdoor & Garden Taps
Outdoor taps are vulnerable to frost damage in winter, particularly if the isolation valve inside the property was not closed before freezing temperatures arrived. A split outdoor tap body or a failed compression joint on the supply line is a common call-out after a cold spell. We repair and replace outdoor taps and can also install an outdoor tap with a proper frost-protected isolation valve if you do not currently have one.
Commercial Taps
Taps in commercial kitchens, office bathrooms, and public facilities are used far more intensively than domestic fittings, and they fail faster. A dripping tap in a commercial kitchen is also a compliance consideration under water efficiency and hygiene standards. Our Commercial Plumbing team handles high-use commercial environments with the speed that a working business requires.
Tap Repair vs Tap Replacement
Repair is usually the right call. A dripping tap caused by a worn washer or a failed cartridge costs little to fix and will give the tap plenty more years of service. If the tap was installed reasonably recently and the body is in good condition, there is no reason to replace it.
Replacement starts to make sense when the tap body has corroded internally, when replacement parts are no longer available for an older or discontinued model, or when years of London hard water have left limescale damage that a new washer cannot overcome. In these situations, fitting a new tap is more economical than repeat repair visits. We will give you a straight assessment of which route makes sense before any work begins — there is no benefit to us in recommending work you do not need.
Why Choose Catalyst Home Services
Same-day availability across London. A dripping tap might not feel like an emergency, but if you want it fixed today, we can make that happen. We offer same-day bookings across London and a 24/7 emergency line for situations where the tap will not close at all.
Qualified engineers who know their taps. Every engineer is trained to work across all common tap types and carries the parts most frequently needed. You can review our licences and certifications before booking.
Honest advice, not upselling. If your tap can be repaired, we repair it. If it genuinely needs replacing, we tell you why and give you options. Read what customers across London say on our reviews page.
Transparent pricing before we start. You get a clear quote before any work begins. No surprise charges added after the fact, no vague call-out fees buried in the invoice.
London-wide coverage. We cover residential and commercial properties across London boroughs including Wandsworth, Lambeth, Southwark, and surrounding areas. Check our full service areas to confirm we cover your postcode.
Related Services You May Need
A faulty tap is sometimes the first sign of a wider plumbing issue. If the repair uncovers something else, or if you have other jobs that need attention at the same time, these services are commonly needed alongside tap repair work:
- Leak Detection & Repair — if the leak is coming from behind the wall or under the floor rather than the tap itself
- Water Pressure Issues — if low flow from the tap turns out to be a pressure problem affecting the whole property
- Toilet Repair & Replacement — worth combining if you have a running cistern or toilet fault at the same time
- Bathroom Fitting — if you are replacing the tap as part of a wider bathroom update
- Emergency Plumbing — if the tap cannot be closed and you need someone out immediately
Book a Tap Repair in London Today
A dripping tap is one of those jobs that is worth dealing with promptly rather than putting off. Catalyst Home Services offers same-day tap repairs across London with qualified engineers and no hidden charges. Call us now on +44 7400 265421, use our 24/7 emergency line if the tap will not close, or book a plumber online and we will confirm your appointment straight away.
How much does it cost to fix a dripping tap in London?
The cost depends on the type of tap, the fault involved, and whether parts need to be ordered. Simple washer replacements on standard pillar taps are at the lower end of the scale. Cartridge replacements on mixer taps or thermostatic shower valves cost more because the parts themselves are more expensive. Catalyst Home Services provides a clear quote before any work starts, so there are no surprises on the invoice.
Can a plumber fix a dripping tap the same day?
Yes, in most cases. We offer same-day bookings across London, and engineers carry the most common tap parts on the van. If a less common cartridge or brand-specific part needs to be ordered, we will let you know the expected timeline before leaving.
Is it worth repairing a dripping tap or just replacing it?
For most taps in reasonable condition, repair is the more cost-effective option. Replacement makes more sense when the tap is old, the body is damaged, or parts are no longer available. We will give you an honest assessment of both options before any work starts, so you can make an informed decision.
What causes a tap to drip or leak?
The most common cause is a worn internal component — a rubber washer, ceramic disc, or O-ring that has degraded over time and can no longer hold a proper seal. In London’s hard water areas, limescale build-up inside the mechanism can accelerate this wear and damage the valve seat as well.
Can I turn off the water supply myself before the plumber arrives?
Yes, and it is a good idea if the tap is leaking significantly. The isolation valve is usually located in the cabinet beneath the sink — it has a flat-head screw slot that you turn a quarter-turn clockwise to close. If there is no isolation valve, the property’s stopcock (typically under the kitchen sink or in the meter box outside) will shut off the cold mains supply to the whole property.