Why Is My Bathroom Tap Dripping? 7 Common Causes and Solutions

That constant drip... drip... drip... from a bathroom tap may look like a minor problem, but it should not be ignored.

A dripping tap can waste water, leave stains around the basin, encourage mineral deposits and sometimes indicate that an internal component is no longer sealing correctly.

The good news is that a dripping bathroom tap does not always mean the entire fitting needs to be replaced.

Common reasons include:

1. A worn cartridge or internal valve

2. Worn washers, seats or springs

3. Damaged O-rings or seals

4. Dirt, sediment or mineral buildup

5. Loose or incorrectly fitted components

6. An old or damaged tap body

7. Temporary water trapped in the spout or aerator

The correct solution depends on where the water is coming from and what type of tap you have.

Here is how to identify the problem before deciding whether to clean, repair or replace the fitting.

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First, Where Is Your Bathroom Tap Leaking From?

Before dismantling anything, identify the exact location of the leak.

A tap can leak from several places.

This first observation can save a great deal of unnecessary repair work.

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Cause 1: Worn Cartridge or Internal Valve

One of the most common reasons a modern bathroom tap continues dripping after being switched off is a problem with the internal valve or cartridge.

The internal mechanism is responsible for starting, stopping and controlling water flow.

With repeated daily use, its sealing surfaces can gradually wear.

When it no longer closes completely, a small amount of water can continue passing through even though the handle is in the OFF position.

How Do You Recognise It?

Typical signs include:

• Constant dripping from the spout

• Dripping long after the tap has been switched off

• Water leaking from around the handle

• Handle movement feeling different than before

What Is the Solution?

The appropriate internal valve or cartridge may need to be inspected and replaced.

However, cartridges and valve assemblies are not universal.

The correct replacement depends on the specific tap model and internal construction.

If you are unsure about the fitting, it is better to identify the product or ask a plumber rather than fitting a random replacement component.

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Cause 2: Worn Washer, Seat or Spring

Not every bathroom tap uses the same internal mechanism.

Some older or specific tap designs use components such as:

• Rubber washers

• Valve seats

• Springs

• Stem assemblies

These components create the seal that stops water when the tap is closed.

Repeated opening and closing eventually wears the sealing surfaces.

Once they stop creating a complete seal, water can continue escaping through the spout.

Signs of a Worn Washer or Seat

You may notice:

• A slow but continuous drip

• The tap needs to be tightened harder than before

• Dripping temporarily stops when excessive force is applied

• The problem gradually becomes worse

Solution

The worn component needs to be replaced with the correct part for the fitting.

Do not keep forcing the handle tighter every time the tap drips.

Over-tightening may place additional stress on the internal mechanism without actually fixing the worn seal.

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Cause 3: Damaged O-Ring or Internal Seal

O-rings are small sealing rings used at different points inside many bathroom fittings.

Although they are small, they are extremely important.

An O-ring can eventually become:

• Flattened

• Cracked

• Torn

• Displaced

• Worn

When this happens, water can escape through places that should normally remain sealed.

Where Does an O-Ring Leak Usually Appear?

Unlike a worn valve that often causes water to drip from the end of the spout, an O-ring problem may cause leakage:

• Around the handle

• Around the spout base

• Around joints

• Around the tap body

Solution

The damaged O-ring or seal normally needs replacement.

The replacement must be the correct size and type for the fitting.

Installing an incorrectly sized O-ring can leave the tap leaking even after repair.

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Cause 4: Dirt, Sediment or Hard-Water Deposits Inside the Tap

Sometimes the tap components themselves are not badly worn.

The problem may simply be that something is preventing the valve from sealing completely.

Small particles can enter plumbing systems from:

• Water tanks

• Pipelines

• Plumbing repairs

• Groundwater

• Borewell supply

• Mineral deposits

If dirt or debris becomes trapped around the internal sealing surface, even a tiny opening can allow water to continue passing through.

Hard Water Can Contribute Too

Hard water contains minerals such as calcium and magnesium.

Over time, mineral deposits may accumulate around:

• Aerators

• Tap outlets

• Internal passages

• Valve components

This can contribute to irregular flow and maintenance problems.

If your bathroom frequently develops white deposits around taps and showerheads, hard water may be part of the problem.

Solution

Depending on the fitting, the aerator or accessible components may need to be cleaned and the plumbing flushed.

If the internal mechanism has substantial mineral buildup, professional servicing may be safer than repeatedly dismantling the tap.

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Cause 5: Loose or Incorrectly Fitted Components

Not every bathroom tap leak develops gradually.

Sometimes a new or recently repaired tap starts leaking because something has not been assembled or connected correctly.

Possible causes include:

• Loose internal retaining components

• Improperly seated seals

• Loose supply connections

• Incorrect installation

• Components fitted in the wrong position

Where Will You Usually Notice This Leak?

Installation-related leaks may appear:

• Under the basin

• Around the tap base

• Around the handle

• At pipe connections

• Shortly after installation

If the tap was installed or serviced recently and the leak started immediately afterwards, installation should be checked before assuming that the tap itself has failed.

Solution

Have the relevant connections and internal assembly checked.

Avoid repeatedly tightening every visible nut yourself. Excessive tightening can damage threads, seals or fittings.

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Cause 6: The Tap Is Old or Internally Damaged

Sometimes replacing a washer or seal is no longer enough.

Over many years, a bathroom tap may experience:

• Repeated internal wear

• Corrosion

• Damaged sealing surfaces

• Multiple previous repairs

• Worn threads

• Physical damage

• Deterioration of the main tap body

If the tap has already been repaired several times but continues to develop leaks, replacement may become more practical than another temporary repair.

Repair or Replace?

Consider replacement when:

• The tap repeatedly starts dripping again

• Multiple internal parts are worn

• The body itself is damaged

• Replacement components are difficult to obtain

• The fitting has significant corrosion

• The tap no longer operates smoothly

• Repair cost is becoming disproportionate to replacement

A good tap should provide dependable daily operation without requiring constant attention.

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Cause 7: It May Not Actually Be a Continuous Leak

Here is a problem that can easily be misdiagnosed.

You turn the tap off.

A few drops continue falling from the spout.

Then they stop.

This does not necessarily mean the tap is faulty.

Small amounts of water can remain in:

• The spout

• Aerator

• Outlet chamber

after the tap has been closed.

The remaining water can drain for a short period.

Debris or mineral buildup in the aerator may sometimes make this temporary dripping more noticeable.

How Can You Tell the Difference?

Usually Normal

The tap drips for a short time and then stops completely.

Possible Fault

The tap continues:

Drip... drip... drip...

for a long period or continuously throughout the day after being switched off.

If it never stops, the internal sealing mechanism should be inspected.

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How to Diagnose a Dripping Tap in 5 Minutes

Before calling a plumber, perform a simple visual check.

Step 1: Turn the Tap Off Normally

Do not force the handle.

Observe the spout.

Step 2: Wait for a Few Minutes

See whether the dripping stops.

If it stops quickly, it may simply be residual water.

If it continues, investigate further.

Step 3: Check Around the Handle

Dry the tap completely with a cloth.

Look closely for fresh moisture around the handle.

Step 4: Check the Base

Look where the tap meets the basin, countertop or wall.

Water appearing here may indicate a different seal problem than a spout drip.

Step 5: Check Under the Basin

For basin-mounted taps, inspect the supply connections below.

If water appears only when the tap is running, the problem may be related to a connection rather than the water-control valve itself.

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Why You Should Not Ignore a Dripping Bathroom Tap

One occasional drop may seem insignificant.

A continuous leak is different.

It Wastes Water

Even a slow drip becomes a substantial amount of wasted water when it continues day and night.

It Can Make Hard-Water Staining Worse

Constant moisture around chrome surfaces and basins can encourage visible mineral buildup.

The Problem May Get Worse

A small sealing problem can gradually develop into a faster leak.

It Can Affect Surrounding Areas

Leaks from the base or under the basin can damage:

• Vanity units

• Cabinets

• Countertops

• Wall finishes

This is why locating the leak is important.

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Can You Fix a Dripping Bathroom Tap Yourself?

Some simple maintenance can be handled by homeowners who are comfortable with basic plumbing work.

But the repair depends heavily on the tap design.

Before opening a fitting:

1. Identify the tap type.

2. Turn off the appropriate water supply.

3. Open the tap briefly to release remaining pressure.

4. Protect the basin drain so small parts cannot fall inside.

5. Use the correct tools.

6. Identify the required replacement part before removing components.

Do not begin dismantling a tap while the water supply remains pressurised.

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When Should You Call a Plumber?

Professional help is the better choice when:

• You cannot identify the source of the leak

• The shut-off valve does not work

• The leak is coming from inside the wall

• A wall mixer or concealed fitting is leaking

• The tap continues leaking after replacing a common wear part

• Plumbing connections need alteration

• The fitting is heavily corroded

• You are not comfortable dismantling the tap

A simple tap repair can become a larger plumbing problem if the wrong component is removed or overtightened.

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Does Hard Water Make Bathroom Taps Drip?

Hard water does not automatically make every tap leak.

However, mineral deposits can contribute to problems by collecting around:

• Aerators

• Valve components

• Internal sealing areas

• Water outlets

If deposits prevent an internal component from sealing properly, dripping may occur.

Hard-water homes should therefore pay particular attention to routine tap maintenance.

Wipe surfaces regularly, monitor the outlet for scale and deal with mineral buildup before it becomes severe.

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Why Does My Tap Drip Even After Changing the Washer?

Because the washer may not have been the real problem.

Depending on your tap, the cause could instead be:

• Worn cartridge

• Damaged seat

• Damaged O-ring

• Dirt inside the valve

• Incorrect replacement part

• Improper assembly

• Internal damage to the fitting

This is why diagnosing the tap type and leak location should come before replacing parts.

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Why Does My Tap Leak From the Handle but Not the Spout?

A leak around the handle often points toward a sealing problem within the handle or valve area rather than the main shut-off seal alone.

Possible causes include:

• Damaged O-ring

• Worn internal seal

• Cartridge problem

• Dirt or debris around the valve

• Incorrect assembly

Dry the complete fitting before checking. Water running down from another area can sometimes make the leak appear to come from the handle.

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Should You Repair or Replace a Dripping Tap?

Use this simple guide.

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Choosing a Replacement Bathroom Tap

If your existing bathroom tap has reached the point where replacement makes more sense than repeated repair, do not choose the next tap only by price or appearance.

Look for:

Good Construction

The tap should be suitable for frequent everyday bathroom use.

Smooth Operation

The control should open and close comfortably without excessive force.

Serviceability

Routine maintenance and replacement components should be practical.

Suitable Tap Type

Choose the correct fitting for your water point.

This may include:

• Pillar cock for a wash basin

• Bib cock for a wall water point

• Long body tap when additional reach is required

• Wall mixer for bath and shower control

• Angle cock for compact water-control applications

Appropriate Design

Choose a design that matches the rest of your bathroom fittings.

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Sunflo Bathroom Taps for Replacement and New Bathrooms

Sunflo offers bathroom taps across collections including:

• ORIO

• NOVA

• TERIM

• PINACO

• DELUXE

Current Sunflo ranges include bib cocks, pillar cocks, long body taps, wall mixers and related bathroom fittings.

Several current Sunflo tap ranges use solid-brass construction, chrome finishes, quarter-turn operation and foam-flow aerators, with products factory tested as part of the manufacturing process.

For an existing dripping tap, however, replacement should not be automatic.

First determine whether the problem is:

A small serviceable component or an ageing fitting that is no longer practical to repair.

That helps avoid both unnecessary replacement and repeated spending on an old tap.

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How Can You Reduce the Chances of Tap Leaks?

No bathroom fitting lasts forever, but a few habits can help.

Don't Force the Handle Closed

A tap should stop water without excessive tightening.

Keep the Aerator Clean

Sediment and mineral deposits can affect water flow.

Address Leaks Early

A small drip is easier to investigate than a severe leak.

Keep Hard-Water Deposits Under Control

Regular gentle cleaning prevents heavy mineral buildup.

Use the Correct Replacement Parts

Improvised washers, seals or cartridges may not seal properly.

Choose Good-Quality Bathroom Fittings

Construction quality, reliable operation and serviceability matter for fittings used every day.

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Final Answer: Why Is Your Bathroom Tap Dripping?

If your bathroom tap keeps dripping after you switch it off, the most likely explanation is that water is passing through a component that should be creating a complete seal.

The seven common causes are:

1. Worn cartridge or valve

2. Worn washer, seat or spring

3. Damaged O-ring or seal

4. Dirt, sediment or mineral buildup

5. Loose or incorrectly installed components

6. An old or internally damaged tap

7. Temporary residual water rather than a true continuous leak

Start by identifying where the water appears and whether the dripping eventually stops.

A small replaceable part may solve the issue.

But if an old bathroom tap continues leaking despite repeated repairs, replacing it with an appropriate new fitting can be the more practical long-term choice.

Sunflo offers bib cocks, pillar cocks, long body taps, wall mixers and other bathroom fittings across ORIO, NOVA, TERIM, PINACO and DELUXE collections for homeowners planning replacements, renovations and new bathrooms.

Stay Pure. Stay Sunflo.

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Frequently Asked Questions

1. Why does my bathroom tap keep dripping after I turn it off?

A continuous drip usually means an internal component is not creating a complete seal. Depending on the tap, this could involve the cartridge, valve, washer, seat, spring, O-ring or debris inside the mechanism.

2. Is it normal for a tap to drip a few times after being turned off?

A few drops immediately after shut-off can sometimes be residual water draining from the spout or aerator. If the dripping stops shortly afterwards, it may not indicate a fault. Continuous dripping should be investigated.

3. Can hard water cause a dripping tap?

Hard water can contribute to mineral deposits inside and around a tap. If deposits interfere with an internal sealing surface or aerator, they can contribute to maintenance and flow problems, although hard water is not the only possible cause of dripping.

4. Why is my tap leaking around the handle?

Leaks around the handle may be caused by a damaged O-ring, worn seal, cartridge problem, trapped debris or incorrect assembly. The exact cause depends on the tap's internal design.

5. Why does my tap drip even after replacing the washer?

Your tap may use a different valve system, or another component such as the cartridge, valve seat, O-ring or stem may be causing the leak. Incorrect replacement parts or debris can also prevent proper sealing.

6. Should I repair or replace a dripping bathroom tap?

Repair usually makes sense when the problem involves an accessible replaceable component and the rest of the tap is in good condition. Replacement may be better when the fitting is old, damaged, corroded or repeatedly develops leaks.

7. Can a clogged aerator make a tap drip?

Debris or mineral deposits around an aerator can sometimes cause water retained in the spout to drain slowly after shut-off. A continuous all-day drip, however, is more likely to require inspection of the valve or internal sealing components.

8. Is a dripping tap an emergency?

A slow spout drip is usually not an emergency, but it should still be repaired. A rapidly worsening leak, water leaking below a basin, water entering cabinetry or a leak from concealed plumbing requires more immediate attention.

9. Can I fix a leaking tap myself?

Basic repairs may be possible if you can identify the fitting and have suitable tools and replacement parts. Always shut off the water supply before dismantling a tap. For concealed fittings, uncertain repairs or persistent leakage, use a qualified plumber.

10. How can I prevent bathroom taps from leaking frequently?

Avoid forcing handles closed, maintain aerators, control hard-water deposits, address small leaks early and use the correct replacement components. Choosing a well-constructed, serviceable bathroom fitting also helps reduce unnecessary maintenance over time.