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An outdoor tap that won't turn off properly is usually a straightforward plumbing problem, but it still needs dealing with promptly. A slow drip can waste more water than you expect, and a steady trickle can point to a worn internal part, frost damage or a fault with the tap body itself.

The good news is that you do not need to diagnose every part before taking action. Your first job is to stop or reduce the water safely. After that, a plumber can usually confirm whether the tap needs a new washer, a new head or a full replacement.

If water is running now, do this first

If the tap is only dripping, you may have time to arrange a normal plumbing visit. If it is running continuously, spraying or soaking the wall, treat it as urgent and isolate the supply if you can.

1. Turn the tap clockwise gently: Do not force it with pliers or a wrench. If the internal spindle is damaged, forcing the handle can make the problem worse.
2. Look for an indoor isolation valve: Outdoor taps are often fed from a pipe inside the kitchen, utility room, downstairs toilet, garage or under a sink. The isolation valve may look like a small slotted screw or lever on the pipe.
3. Use the main stopcock if needed: If the tap is still running and you cannot find a separate valve, turn off the main stopcock for the property. This is often under the kitchen sink, in a cupboard or near where the water pipe enters the home.
4. Keep water away from electrics: If water is reaching an outdoor socket, lighting, pond equipment or extension lead, do not touch wet electrical fittings. Turn off power only if you can do so safely from a dry location.
5. Direct water away from the wall if safe: A hose can sometimes be used to guide water towards a drain while you wait, but do not leave it running into soil against the house or near air bricks.

If you cannot isolate the water, call a plumber for urgent help. This is especially important if water is coming from behind the tap, from the wall or from a pipe inside the property.

Why your outdoor tap won't turn off

Most outside taps are simple, exposed fittings. They deal with weather, wear and limescale, so the cause is often mechanical rather than mysterious. The way the tap behaves gives useful clues.

A drip from the spout is often a worn washer or valve seal. A tap that keeps running even when the handle feels fully closed may have a damaged internal seating, which means the part that should seal the flow no longer makes proper contact.

If the handle spins loosely, the handle or spindle may no longer be gripping properly. In that case, the tap might feel as though it is closing, but the internal valve is not actually moving enough to shut off the water.

Do not just overtighten it

It is tempting to keep turning harder when an outdoor tap will not shut off, but overtightening often causes more trouble. Older outdoor taps can have worn threads, brittle handles and corroded internal parts. Too much force can snap the handle, damage the spindle or loosen the fitting where it passes through the wall.

A temporary cap on the tap is not a proper fix either. It may stop the visible drip for a short time, but it can leave the tap under pressure and push the leak elsewhere, including back towards the wall. If the internal valve is failing, the safer answer is to isolate the supply and have the tap repaired or replaced.

Is it the tap, the hose or the wall connection?

Before calling someone out, check whether the problem changes when the hose is disconnected. Only do this if the water is not spraying heavily and you can remove the hose safely.

If the tap stops leaking once the hose is removed, the issue may be the hose connector, the rubber washer inside the connector or a spray gun holding pressure. These are low-cost parts and may be easy to replace.

If the tap still drips or runs with no hose attached, the fault is more likely inside the tap itself. If water appears from behind the tap plate, from brickwork or from the pipe inside the home, stop using the tap and call a plumber. That can mean the fitting has loosened, a joint has failed or frost has cracked part of the installation.

Outdoor taps should also have suitable backflow protection, which helps stop garden water being drawn back towards the drinking water supply. If your tap is old or being replaced, ask the plumber to check this at the same time. WaterSafe is a useful UK source for finding approved plumbers and understanding why water fittings should be installed correctly.

Who should you call?

For an outdoor tap that won't turn off properly, the main trade to call is a plumber. They can isolate the supply, strip down the tap, replace washers or cartridges where suitable and fit a new outdoor tap if repair is not worth it.

There are a few situations where another trade may be involved later, but the plumber should usually come first:

• A plumber handles the tap, water feed, isolation valve, frost damage and replacement fitting.
• An electrician may be needed if water has reached outdoor electrics, sockets, garden lighting or electrical equipment.
• A builder or plasterer may be needed later if long-running water has damaged brickwork, render, plaster or the wall around the pipe.
• A gardener or drainage specialist is only likely to be relevant if the tap fault has caused waterlogging and you also have poor garden drainage.

If you are a landlord or property manager, an outdoor tap that will not shut off should be logged and dealt with quickly, particularly before cold weather or between tenancies. Tenants may not know where the internal isolation valve is, so it is worth asking them to send photos or a short description before you book the plumber.

Repair or replace?

A plumber will usually decide between repairing the existing tap and replacing it. With indoor taps, repair is often worth considering carefully because styles, finishes and access can vary. Outdoor taps are generally simpler, so replacement can be the most practical option when the tap is old, corroded, frost damaged or repeatedly leaking.

A repair may make sense when the tap body is sound and the problem is a basic washer or seal. Replacement may be better when the handle is loose, the spindle is worn, the threads are damaged or the tap has split after freezing weather.

If you want a broader idea of what affects tap repair pricing, HaMuch has a separate guide on how much it costs to fix a leaking tap. For an outdoor tap specifically, the final price will depend on access, whether there is an isolation valve, whether parts are needed and whether the job is booked as an urgent call-out.

What affects the cost of fixing an outdoor tap?

The biggest cost factor is usually not the tap itself, but the time and difficulty involved. A plumber who can isolate the outdoor tap easily and replace a washer during a normal appointment will usually have a simpler job than one who has to trace pipework, shut off the whole property or deal with a seized fitting.

Pricing can also vary by location. Labour rates and availability are not always the same in London, Birmingham, Manchester and nearby towns, especially for same-day visits. Rather than relying on vague national averages, you can compare current plumber rates on HaMuch and see local pricing information before you request quotes.

Common cost factors include:

• Whether the tap is dripping slowly or actively running
• Whether the plumber can isolate just the outdoor tap
• Whether the whole tap needs replacing
• Whether the pipe through the wall is damaged
• Whether the job is during normal hours or an emergency call-out
• How easy it is to access the internal pipework

HaMuch is built to make this comparison easier. You can check real, comparable pricing data by trade and location, then look at local plumbers with genuine customer reviews before deciding who to contact.

When it becomes urgent

A dripping outdoor tap is inconvenient. A running tap that cannot be isolated is more urgent, especially if water is going into the wall, pooling near the house or reaching electrical fittings.

Call a plumber urgently if:

• Water keeps flowing and you cannot turn it off at the tap
• You cannot find or operate the isolation valve or stopcock
• Water is coming from the wall rather than just the spout
• The tap has frozen and then started leaking after thawing
• The leak is affecting a neighbouring property, shared entrance or rented home

If you have turned off the main stopcock, remember that your home may have no running water until the fault is fixed. Let the plumber know this when you request quotes, as it changes the urgency of the job.

How to reduce the chance of it happening again

Once the fault is fixed, a few simple habits can help protect the new or repaired tap. Turn off and disconnect hoses in cold weather, especially if the hose has a spray gun or connector that can trap water. If there is an indoor isolation valve for the outdoor tap, use it before winter and open the outside tap to let any remaining water drain away.

Avoid leaving hose attachments permanently under pressure. It is also worth asking the plumber to show you where the isolation valve is, or to fit one if there is not already a convenient way to shut off the outdoor tap separately from the rest of the home.

Frequently Asked Questions

Why won't my outdoor tap turn off fully? The most common reasons are a worn washer, damaged seal, loose handle, damaged spindle or worn valve seat inside the tap. Frost damage can also crack or distort parts of an outside tap.

Is an outdoor tap that won't turn off an emergency? A slow drip is usually not an emergency, but a tap that keeps running, sprays water or leaks from the wall should be treated as urgent. Isolate the water if you can and call a plumber.

Can I fix an outdoor tap myself? You may be able to replace a hose washer or connector yourself. If the tap itself is faulty, only attempt work if you can safely isolate the water and know what you are doing. Otherwise, call a plumber.

Should I turn off the main stopcock? Yes, if the outdoor tap is running and you cannot find a separate isolation valve. Turning off the main stopcock can stop the flow until a plumber arrives, but it will usually cut off water to the property.

Should the outdoor tap be repaired or replaced? A newer tap with a worn washer may be repairable. An old, seized, frost damaged or repeatedly leaking tap is often better replaced, especially if the labour time to repair it would be similar.

Who fixes an outdoor tap that won't turn off? A plumber is the right trade for the tap, pipework and isolation valve. If water has reached electrics or caused building damage, you may also need an electrician or builder after the water leak is under control.

Need a plumber for an outdoor tap that will not turn off?

If the tap is still running, isolate the water if you can and arrange help quickly. With HaMuch, you can post your plumbing job for free, compare local plumbers, check transparent pricing information and read genuine customer reviews before you decide who to hire.

For urgent leaks, describe the problem clearly when you request quotes. Include whether the water is dripping or flowing, whether you have turned off the stopcock and whether water is coming from the wall. That helps local plumbers understand how quickly they need to attend.

Strange smells from the kitchen sink are unpleasant, but they are also useful clues. In many UK homes, the cause is something fairly ordinary, such as food build-up in the waste pipe, a dry U-bend, a dishwasher connection issue or a small leak under the cupboard.

The right next step depends on what the smell is like, when it appears and whether the sink is draining normally. This guide walks you through the common causes, what you can safely check yourself and when a plumber or drainage specialist is the right person to call.

First, make sure it is not a gas smell

Most sink smells come from the drain, not the gas supply. Even so, a rotten egg type smell can sometimes be confused with the smell added to mains gas, especially in a kitchen where there may be a gas hob, boiler or pipework nearby.

If the smell seems to be coming from the room rather than the plughole, or you suspect gas for any reason, do not investigate the sink first. Follow Gas Safe Register emergency advice, call the National Gas Emergency Service on 0800 111 999, open doors and windows, avoid flames and do not turn electrical switches on or off. Any repair to a gas appliance or gas pipe must be handled by a Gas Safe registered engineer.

If you are confident the smell is only from the sink drain, the checks below can help you narrow it down.

What different kitchen sink smells usually mean

A smell from kitchen sink drains can have several causes. This table gives you a quick way to match the smell to the most likely problem and the trade that usually deals with it.

For most kitchen sink smells, a plumber is the sensible first call. They can check the waste trap, pipework, appliance connections and signs of a partial blockage without you having to dismantle anything.

Safe checks you can do now

If there is no suspected gas leak, no sewage backing up and no active leak, there are a few simple checks you can try before booking a tradesperson.

• Run cold water, then hot water, for a minute or two to refill the trap and move loose residue.
• Remove obvious food debris from the plughole, strainer and around the sink, then clean those visible surfaces.
• Pour washing-up liquid into the plughole and flush with hot tap water to help shift light grease.
• Check whether the smell is worse after using the dishwasher, washing machine or sink waste disposal, if you have one.
• Look inside the under-sink cupboard from a normal standing position and check for damp patches, swelling, black spots, staining or a wet smell.
• Avoid mixing chemicals, especially bleach with vinegar, limescale remover or drain cleaner.

Do not remove the U-bend or trap unless you are confident, have a container ready and know how to refit it correctly. A badly refitted trap can leak or let drain smells back in, which makes the problem worse.

The most common causes of a smelly kitchen sink

1. The U-bend has dried out

The U-bend, also called a trap, is the curved section of waste pipe under the sink. It holds a small amount of water that acts as a seal between your kitchen and the drain system. If that water evaporates, drain smells can travel back up through the plughole.

This is common in sinks that have not been used for a while, such as in a vacant rental property, a holiday let or a utility area. Running water for a couple of minutes may be enough to refill the trap. If the smell disappears and stays away, the issue was probably a dry trap.

If it comes back quickly, the trap may be leaking, fitted badly or being emptied by a pressure problem elsewhere in the waste system. That is when a plumber should take a look.

2. Food, fat and grease have built up in the waste pipe

Kitchen sinks deal with cooking water, crumbs, oil, sauces and tiny food particles. Over time, grease can cling to the inside of the waste pipe and trap other debris. Even if the sink still drains, the residue can smell sour or stale.

You may notice this more after cooking, washing pans or running hot water, because warmth can release the smell. A sink strainer, wiping pans before washing them and putting fats in the bin rather than down the sink can reduce the chance of it returning.

If the smell keeps coming back despite normal cleaning, a plumber can remove and clean the trap, check for a partial blockage and make sure the waste run is set up properly.

3. There is a partial blockage

A partial blockage is not always dramatic. The sink might drain, but more slowly than usual. You might hear gurgling, see water briefly rise in the plughole or notice the smell after another appliance empties into the same waste pipe.

This is often caused by a mix of grease, food waste, coffee grounds, rice, pasta, soap residue and general debris. Caustic drain cleaners can sometimes move a small blockage, but they can also leave chemicals sitting in the pipe if the blockage remains. That can make the job more unpleasant and less safe for whoever comes to fix it.

If there is gurgling, slow drainage or repeated smell, it is usually better to call a plumber rather than keep adding stronger chemicals.

4. The dishwasher or washing machine waste is connected incorrectly

Many kitchens have a dishwasher or washing machine waste hose connected under the sink. If that hose is not positioned correctly, waste water can sit in the hose or smells can travel back through the connection.

A clue is timing. If the sink smells worse just after the dishwasher finishes, or the smell appears when the washing machine drains, the appliance waste connection could be involved. A plumber can check the under-sink waste arrangement. If the appliance drum itself smells even when the sink is fine, an appliance engineer may be more appropriate.

5. The trap, waste pipe or venting was fitted badly

If the smell started after a new sink, worktop, kitchen refit or appliance installation, the installation is worth checking. Missing traps, poorly sealed joints, awkward pipe runs and incorrect waste connections can all allow odours to escape.

This is not always obvious from the outside. The sink may look tidy, but the waste setup inside the cupboard may not be doing its job. A plumber can identify whether the waste pipework needs adjusting rather than simply cleaning.

When to call a plumber, drainage specialist or another trade

A plumber is the right first call if the smell is coming from the plughole, the under-sink cupboard, the dishwasher waste connection or a suspected trap issue. They can deal with most kitchen sink waste problems and tell you if a drainage specialist is needed.

A drainage specialist is more likely to be needed if there are outdoor drain smells, sewage-like smells from several drains, a blocked gully, water backing up outside or repeated blockages that return after the sink waste has been cleared.

If a small leak has damaged the kitchen unit, start with a plumber to stop the moisture. After that, you may need a cleaner for mouldy surfaces or a carpenter and joiner if the cupboard base or surrounding units need repair.

If you are choosing someone for the first time, HaMuch has a practical guide on how to find a reliable plumber, including what to check before you agree to the work.

How much does it cost to fix a smelly kitchen sink?

The cost depends on what is causing the smell. A simple trap clean or refit is usually a smaller job than tracing a recurring blockage, correcting a poor installation or investigating an external drain issue. Location matters too, with rates varying between London, Birmingham, Manchester and surrounding areas.

This is where HaMuch is useful. Instead of giving you a vague national guess, HaMuch lets you check current plumber rates by location, compare local tradespeople, read genuine customer reviews and decide who to contact. It is free for homeowners and landlords to request quotes, and there is no obligation to book.

For landlords and property managers, getting a recurring sink smell checked promptly is sensible. Tenants may describe the issue differently, such as a bad drain smell, damp smell in the cupboard or rotten egg smell in the kitchen. Asking when it happens and whether the sink drains slowly can help you brief the plumber clearly.

When the smell needs urgent attention

Most kitchen sink smells are not emergencies, but some signs need faster action.

Call the National Gas Emergency Service immediately on 0800 111 999 if there is any chance the smell is gas. Do not use online quote forms or general troubleshooting for a suspected gas leak.

Arrange a same-day plumber or drainage specialist if sewage is backing up into the sink, several drains smell at once, water is escaping into the cupboard, the floor is wet or the smell is strong and getting worse. If water is near electrics, keep away from the area and get professional help.

How to prevent the smell coming back

Once the sink is sorted, prevention is mostly about keeping food, fat and stagnant water out of the waste system.

Use a sink strainer, scrape plates into the bin and wipe greasy pans with kitchen roll before washing them. Run plenty of water after rinsing food residue down the sink. If a sink is rarely used, run water through it every week or so to keep the trap topped up.

It is also worth paying attention after any kitchen work. If a smell starts soon after a new appliance, new sink or changed waste pipe, do not assume it is just normal settling in. A small installation issue can create a persistent smell until it is corrected.

Frequently Asked Questions

Why does my kitchen sink smell like rotten eggs? A rotten egg smell from the plughole is often caused by drain gases coming through a dry or faulty trap, or by a build-up of food and grease in the waste pipe. If the smell could be gas rather than drain odour, call the National Gas Emergency Service on 0800 111 999 straight away.

Can I fix a smell from kitchen sink drains myself? You may be able to clear a mild smell by cleaning visible debris, flushing the sink with hot water and washing-up liquid, and making sure the trap has water in it. If the smell returns, the sink drains slowly or there is damp under the cupboard, call a plumber.

Should I pour bleach down a smelly kitchen sink? Bleach may mask smells, but it often does not remove grease build-up or a blockage. Never mix bleach with vinegar, drain cleaner or other chemicals. If you have already used chemicals and need a plumber, tell them before they start work.

Who should I call for a sewage smell from the kitchen sink? Start with a plumber if the smell seems to come from the sink, trap or under-sink waste. If several drains smell, an outside drain is blocked or waste water is backing up, a drainage specialist may be needed.

Why does the smell come back after I clean the sink? Recurring smells usually mean the problem is deeper than the visible plughole. Common causes include grease inside the waste pipe, an incorrectly fitted trap, a dishwasher waste issue or a partial blockage further along the drain.

Get the smell sorted with the right local tradesperson

If your kitchen sink smell keeps returning, the safest next step is to get the waste pipework, trap and appliance connections checked properly. Post your job on HaMuch to compare local plumbers, see transparent pricing information and request quotes before deciding who to hire.

If you suspect gas, do not post a job first. Call 0800 111 999 immediately and follow the emergency advice.

A bath or sink draining very slowly is one of those household problems that starts as a nuisance, then quickly becomes difficult to ignore. Water sits around your feet in the shower, the basin takes ages to empty or the kitchen sink makes a slow glugging noise after washing up.

In most homes, the cause is a partial blockage rather than a serious plumbing fault. Hair, soap residue, food scraps, grease and general build-up can narrow the pipe until water struggles to get through. The good news is that there are a few safe things you can check before calling anyone out. The key is knowing when DIY is sensible and when it is time to call a plumber.

If only one bath, sink or basin is draining slowly, the blockage is usually close to that fixture. If several drains are slow at once, or dirty water is coming back up, treat it as more urgent and get professional help.

What to do first if your bath or sink is draining slowly

Start by using the affected bath or sink as little as possible. A slow drain can become a full blockage, especially if more water, soap, food waste or bath products keep going into it.

Before trying any fix, check whether the problem is limited to one place. Run a little water in nearby fixtures and watch how they drain. For example, if the bathroom basin is slow but the bath and toilet are normal, the issue is probably local to the basin waste. If the bath, basin and kitchen sink are all slow, the blockage may be further along the waste pipe or external drain.

Remove any obvious surface debris from the plughole. In a bathroom, hair is the usual culprit. In a kitchen, scraps of food or congealed fat can sit just below the plughole and slow the flow. Wear rubber gloves and avoid pushing anything further down.

Do not keep pouring boiling water, bleach or strong chemicals down the drain in the hope that it will clear itself. Some products can damage seals or make the job more unpleasant for a plumber. If you have already used a chemical drain cleaner, tell the plumber before they start work.

Common causes of a slow draining bath or sink

A slow draining sink or bath can have several causes, but most fall into a handful of common patterns. The table below shows what might be happening and who normally deals with it.

For most indoor slow-drain problems, a plumber is the right first trade. They can clear local blockages, remove and clean traps, check waste pipes and advise if the issue is actually outside the property. If the problem is in a shared drain, sewer or external pipe, you may need a drainage specialist or your water company, but a plumber can usually help identify that.

If you are trying to judge whether a quote is fair, check the current plumber rates on HaMuch before booking. HaMuch shows real, comparable pricing by trade and location, so you are not relying on vague call-out estimates.

Safe fixes you can try yourself

If the water is draining slowly but not completely blocked, there are a few low-risk steps worth trying. Stop if the problem gets worse, if water starts backing up or if you are unsure how to reassemble anything you remove.

A simple plunger can work well on sinks and baths when there is a partial blockage. Make sure there is enough water to cover the rubber cup, cover any overflow opening with a damp cloth and use steady up-and-down pressure. The aim is to shift the blockage, not force the pipework apart.

For a bathroom basin or bath, a plastic drain hair remover can pull out hair near the plughole. These are cheap and can be effective, but use them gently so you do not damage the waste fitting.

For a kitchen sink, warm water with washing-up liquid may help soften grease near the plughole. Avoid pouring large amounts of fat, oil or greasy water down the sink afterwards, as it can cool and harden further along the pipe.

If you are comfortable doing so, you may be able to unscrew and clean the trap under a basin or kitchen sink. The trap is the curved section below the plughole that holds water to stop smells coming back up. Put a bowl and towel underneath first, take a photo before you undo anything and do not overtighten the fittings when you put them back.

When you should call a plumber

Call a plumber if the bath or sink is still slow after basic checks, or if the same problem keeps coming back. Repeat blockages usually mean there is build-up further along the pipe, poor pipe alignment or another issue that cannot be fixed from the plughole.

You should also get help quickly if you notice any of the following:

• Water backing up into the bath, shower or another sink
• A bad drain smell that does not clear after cleaning
• Gurgling from other plugholes when one fixture drains
• Leaking from under the sink after you have tried to clear it
• Slow drainage affecting more than one room
• A rental property where tenants cannot use washing or bathing facilities properly

A plumber may clear the blockage manually, remove and clean the trap, use specialist rods or check whether the waste pipe needs repair. For more complex cases, they may recommend a camera inspection or drainage contractor, especially if the blockage appears to be outside the property.

Bath, bathroom sink or kitchen sink: what the location tells you

The room where the problem happens gives useful clues.

A slow draining bath is often caused by hair and soap products collecting in the trap. This is especially common in homes where several people use the same shower over the bath. If water pools around your feet within a minute or two, the restriction is likely close to the bath waste.

A bathroom basin usually blocks with a mixture of hair, toothpaste, shaving foam and soap residue. If the plughole also smells, the trap may need cleaning. This is normally a straightforward plumbing job unless access under the basin is awkward.

A slow kitchen sink is more likely to involve grease or food waste. Even if you use hot water, fats can cool inside the pipe and stick to the sides. Over time, the opening narrows and the sink drains more slowly. If you have a washing machine or dishwasher connected to the same waste, symptoms may show up when those appliances empty.

If the toilet is also affected, or water is coming up through a shower tray when another fixture drains, do not keep testing it. That points to a more significant blockage and you should call for help.

How much does it cost to fix a slow draining sink or bath?

The cost depends on what the plumber has to do, how accessible the pipework is and whether the problem is local or further along the drainage system. A simple trap clean is usually quicker than tracing a repeated blockage behind units, under a bath panel or outside the property.

Location also affects labour rates. Plumber pricing in London, Birmingham, Manchester and surrounding areas can vary due to travel time, parking, demand and whether the job is urgent. Rather than relying on a national average that may not match your area, HaMuch lets you compare local plumbers and see transparent rate information before you request quotes.

The main factors that influence the final price are:

• Whether it is a normal appointment or an emergency call-out
• Whether the blockage is in one fixture or several drains
• How easy it is to access the trap and pipework
• Whether parts need replacing, such as a damaged trap or waste fitting
• Whether specialist drainage equipment is needed

If you also have a dripping or faulty tap at the same sink, that is a separate job from the drainage issue. You can check typical repair considerations in HaMuch's guide to how much it costs to fix a leaking tap, but a slow drain itself is normally about the waste pipe rather than the tap.

Advice for landlords and property managers

For rental homes, a slow drain is worth dealing with early. Tenants may keep using the bath or sink because it still drains eventually, but the blockage can worsen and lead to leaks, smells or unusable facilities.

Ask the tenant for clear details before booking a plumber. Which fixture is affected? How long does it take to drain? Are any other sinks, baths, showers or toilets slow? Has any drain cleaner been used? A short video can also help the plumber understand the problem before arriving.

If the property is in a block of flats or converted house, ask whether neighbours have similar symptoms. Shared drainage can complicate responsibility and may involve the freeholder, managing agent or water company.

How to prevent it happening again

Once the drain is clear, small habits make a big difference. Use a hair catcher in baths and showers, wipe grease from pans with kitchen roll before washing them and avoid rinsing coffee grounds or food scraps down the sink.

Clean plugholes regularly, especially in busy bathrooms. If a sink starts to slow again within days of being cleared, do not just repeat the same DIY fix. That usually means the underlying issue has not been solved.

For older homes, recurring slow drainage can sometimes be linked to poor pipe layout, long pipe runs or previous DIY plumbing alterations. A plumber can advise whether a repair or adjustment would be more sensible than repeatedly clearing the same blockage.

Frequently Asked Questions

Why is my sink draining slowly but not blocked? It is probably partially blocked. Water can still pass through, but hair, soap, grease or food residue has narrowed the pipe so it drains much more slowly.

Can I use chemical drain cleaner for a slow draining sink? You can use products according to the label, but they are not always the best option. Never mix drain cleaners with bleach or other chemicals, and tell your plumber if you have used one.

Why does my bath drain slowly after every shower? Hair and soap residue are the most common causes. A hair catcher and regular plughole cleaning can help, but if the problem returns quickly, the blockage may be deeper in the waste pipe.

Should I call a plumber or a drainage company? For one slow sink, basin or bath, call a plumber first. If several drains are affected or the blockage appears to be outside the property, a drainage specialist may be needed.

Is a slow draining sink an emergency? Not always. If it is only slow and water is not backing up, you can usually arrange a normal plumbing visit. If dirty water is coming back up, several fixtures are affected or there is leaking, treat it as urgent.

Need a plumber for a slow draining bath or sink?

If your bath or sink is still draining very slowly after simple checks, it is time to compare local help. With HaMuch, you can see transparent plumber pricing, compare tradespeople in your area and request quotes without any obligation to book.

Post your plumbing job on HaMuch and get clear, comparable quotes from local plumbers before you decide who to hire.

A toilet that will not stop running after you flush is usually caused by a small part inside the cistern not closing properly. In most homes, it is not immediately dangerous if the water is only running into the toilet bowl, but it can waste water, become noisy and point to a part that is wearing out.

The good news is that this is one of the more common toilet faults a plumber sees. The cause is often a stuck flush button, a badly set float or a worn seal, and many repairs are straightforward once the cistern is opened and tested properly.

If water is coming out onto the floor, dripping through a ceiling or spreading into a wall, treat it as urgent. Turn off the toilet supply if you can do so safely and contact a plumber as soon as possible.

What to do first

Start by working out where the water is going. If it is constantly trickling into the toilet pan, meaning the bowl itself, the issue is usually inside the cistern. If water is escaping outside the toilet, you could be dealing with a leak from the cistern, pan connector, inlet pipe or overflow arrangement, and that needs faster attention.

If your toilet has a small isolation valve on the pipe feeding the cistern, you may be able to turn the water off to that toilet only. This is often a small slotted valve that turns a quarter turn with a flat screwdriver. Do not force it if it is stiff, corroded or hard to reach. A damaged isolation valve can turn a nuisance fault into a leak.

For a toilet that is only running into the bowl, you can usually leave the water on while you make a few simple checks. For a toilet leaking onto the floor, switch off the supply if possible, put towels down and call a plumber.

Why a toilet keeps running after you flush

A standard toilet works by releasing water from the cistern into the pan, then refilling the cistern ready for the next flush. When everything is working correctly, the flush mechanism closes, the fill valve lets clean water back in and the float shuts the incoming water off once the level is right.

When a toilet keeps running after you flush, one of those steps has failed. Either water is still leaving the cistern because the flush seal has not closed properly, or fresh water is still entering because the fill valve or float has not shut off.

That is the classic 'after flush toilet keeps running' fault, and it usually comes down to one of a small number of causes.

The most likely causes and who to call

Most running toilet problems are plumbing jobs. A confident homeowner might be able to spot the obvious signs, but a plumber is the right trade if parts need adjusting, replacing or testing for leaks.

A stuck button is one of the simplest causes. Modern dual-flush toilets often have a push-button lid connected to a cable or rod. If that button sticks down or the cable is slightly tight, the flush valve may not reseal fully.

A worn flush valve seal is also very common. This seal sits at the point where water leaves the cistern during a flush. If it is warped, dirty or perished, water can continue to seep into the pan even though the toilet looks normal from the outside.

The other common route is the fill valve. If the float is set too high, water enters the cistern until it reaches the overflow and then runs continuously into the pan. If the fill valve itself is worn, it may not shut off cleanly, which can cause a constant hiss or repeated short refills.

Safe checks you can do before calling a plumber

Only do checks you feel comfortable with. Cistern lids can be heavy and some push-button lids are attached to a cable underneath, so lift gently and avoid pulling anything hard.

• Press the flush button or handle once more and see whether it returns to its normal position.
• Listen for a constant hiss from the cistern, which often points to the fill valve still letting water in.
• Look for a constant trickle into the toilet pan, even several minutes after flushing.
• If you can safely lift the cistern lid, check whether the water level is rising too high and going into the overflow.
• Do not put drain cleaner, bleach tablets or harsh chemicals inside the cistern to try to fix the mechanism.

If the toilet stops running when you gently lift the float, the fill valve or float setting is likely to be involved. If the water level is normal but water still trickles into the pan, the flush valve seal is a more likely suspect.

These checks are only to help you describe the problem. You do not need to dismantle the toilet before asking for quotes. In fact, if the parts are old, brittle or boxed in, taking them apart can make the repair harder.

What a plumber will usually check

A plumber will normally start by testing the flush button, handle, float and fill valve. They may isolate the water to the toilet, remove the cistern lid safely and check whether the problem is on the filling side or the flushing side.

For a simple fault, the fix might be an adjustment to the float height or freeing a sticking button. If a part is worn, the plumber may replace the fill valve, flush valve, syphon, washer or seal. On older toilets, they may recommend replacing more than one internal part if the remaining components are also close to failing.

With close-coupled toilets, where the cistern sits directly on the pan, parts are usually easier to reach. Concealed cisterns can take longer because access panels may be small or awkward. If the cistern has been tiled in without proper access, the plumber may need to advise on the least disruptive way to reach the mechanism.

How much could it cost to fix a running toilet?

The cost depends on the cause, the parts needed, the age of the toilet and how easy it is to access the cistern. A quick adjustment is usually less involved than replacing a complete flush valve or working on a concealed cistern.

Location also matters. A plumber's rate in London may differ from one in Birmingham or Manchester, so it is worth comparing local pricing before you book. HaMuch shows real, comparable plumber pricing by trade and location, alongside local tradesperson listings and customer reviews, so you are not relying on vague estimates.

The main things that affect the price are:

If you have another small plumbing issue at the same property, it can be worth asking whether it can be looked at during the same visit. For example, if you also have a dripping tap, HaMuch has a separate guide on how much it costs to fix a leaking tap so you can compare both jobs sensibly.

When you should call a plumber straight away

Call a plumber promptly if the toilet is your only toilet, the cistern will not stop filling, the isolation valve will not turn, or water is escaping anywhere outside the pan. You should also call if the toilet is in a rental property and the tenant is reporting constant noise, water waste or signs of damp nearby.

For landlords and property managers, ask the tenant for a short video if possible. A clip showing whether the water is running into the pan or onto the floor can help the plumber understand the urgency before attending. Make sure the plumber has access details, parking information and permission to isolate the water if needed.

If the repair involves damage to boxing, tiles or a panel around a concealed cistern, the plumber is still usually the first person to call. Once the leak or running fault is fixed, a carpenter, tiler, plasterer or painter may be needed to make good the surrounding finish.

Choosing the right plumber

For this kind of job, you want someone who is used to toilet repairs and can explain whether the fault needs a simple adjustment or replacement parts. Look for clear rates, recent reviews and a practical explanation of what is included in the callout.

If you are not sure what to ask before booking, HaMuch's reliable plumber checklist can help you compare tradespeople more confidently. It is especially useful if you are arranging work for a rental property or you have had mixed experiences with callouts before.

Frequently asked questions

Can I still use a toilet that keeps running after flushing? If the water is only running into the pan, you can usually still use the toilet for a short time. It should still be repaired because it wastes water and may get worse. If water is leaking onto the floor, stop using it and call a plumber.

Is a running toilet an emergency? It is not usually an emergency if the water is contained inside the toilet pan. It becomes urgent if water is escaping outside the toilet, you cannot isolate the supply, the cistern is overflowing or the fault is affecting the property below.

Why does my toilet stop running if I press the flush button again? That often points to a sticking button, handle, cable or flush mechanism. The button may not be returning fully after the flush, which stops the internal seal from closing properly.

Will a plumber need to replace the whole toilet? Usually not. Many running toilet faults are fixed by adjusting or replacing internal cistern parts. A full toilet replacement is more likely if the toilet is very old, cracked, badly fitted or parts are no longer available.

Who should deal with a running toilet in a rented property? Tenants should report the problem to the landlord or managing agent as soon as they notice it. The landlord or property manager will normally arrange a plumber to inspect and repair the toilet.

Get clear plumber prices before you book

If your toilet will not stop running after you flush, post the job on HaMuch and compare local plumbers with transparent pricing and genuine reviews before deciding who to hire. If water is leaking onto the floor or through a ceiling, treat it as urgent and request help straight away.