Dripping faucet repair is a small job that can save a surprising amount of water in a Kingston home. Whether the drip is in a kitchen sink, bathroom vanity, laundry faucet, or older fixture in Barriefield or Rideau Heights, the key is to diagnose the faucet type before replacing parts.

A slow drip may not look urgent, but it usually means a rubber seal, cartridge, washer, or valve seat is no longer closing properly. The good news is that many faucet drips are fixable with basic tools and a careful approach. The trick is not to guess. Guessing often leads to scratched finishes, stripped screws, and repeat leaks.

According to the U.S. EPA WaterSense program, a faucet dripping once per second can waste more than 3,000 gallons of water per year, which is over 11,000 litres. That is worth fixing.

Why a Dripping Faucet Should Not Wait

A faucet drip is more than an annoying sound at night. It is a warning that water is getting past a seal that should be tight.

In newer faucets, the problem is often a worn cartridge. A cartridge is the removable internal valve that controls hot and cold water flow. In older two-handle faucets, the issue is often a washer or O-ring. An O-ring is a small rubber ring that seals around a moving part.

If the drip continues, it can lead to:

Higher water bills
Staining around the sink or tub
Worn faucet seats and handles
Moisture damage under the sink
A small repair becoming a full faucet replacement

In older Kingston homes, especially where shut-off valves have not been touched in years, a simple faucet repair can uncover other weak spots. Stiff fixture valves, corroded supply lines, and older galvanised piping can make the job harder than expected. That does not mean you cannot start with DIY checks. It just means you should move slowly and know when to stop.

Dripping Faucet Repair: Diagnose the Leak First

Before you buy parts, figure out where the water is coming from. A faucet can leak from the spout, the handle, the base, or the supply connection below the sink. Each one points to a different repair.

Can I fix a dripping faucet myself?

Yes, many homeowners can fix a dripping faucet if the shut-off valves work and the faucet parts are easy to access. Start with a simple diagnosis, use the correct replacement part, and avoid forcing stuck parts. If water will not shut off fully, or the faucet is corroded, it is time to call a licensed plumber.

Use this quick diagnostic walkthrough:

Watch where the water appears: A drip from the spout usually means a worn cartridge, washer, or ceramic disc seal. Water around the handle often points to an O-ring or packing nut. Water under the sink may be a supply line or connection issue.
Check if the leak is hot or cold: On a two-handle faucet, turn off the hot supply valve under the sink. If the drip stops, the hot side is the likely problem. If not, test the cold side.
Look at the faucet style: A two-handle faucet may be compression, cartridge, or ceramic disc. A single-handle faucet is often cartridge, ball, or ceramic disc. The style matters because parts are not interchangeable.
Remove and clean the aerator: The aerator is the small screen at the end of the spout. If it is clogged, pressure can behave strangely and make a faucet seem worse than it is.
Test the shut-off valves: Turn each valve clockwise until snug, not forced. If the valve leaks, spins endlessly, or will not stop the water, do not continue the faucet repair.
Take photos before disassembly: Photos help you remember the handle order, clip position, and cartridge direction.

Kingston municipal water hardness, often around 200 to 350 mg/L, can leave scale on aerators and cartridges, so if the same buildup keeps returning across your home, it may be worth reviewing Water Treatment Kingston options separately.

If the checks above show a basic faucet issue but the parts are seized, Tap Tech can help with professional Plumbing Kingston repairs, including diagnosis, flat-rate pricing, and same-day availability when scheduling allows.

Step-by-Step Faucet Repair for a Lasting Fix

You will usually need an adjustable wrench, screwdriver, Allen key, needle-nose pliers, plumber’s grease, a towel, and the correct cartridge, washer, or O-ring kit. Bring the old part to the store if you are unsure. Faucet brands can look similar from the outside but use different internals.

Here is the safe repair process:

Turn off the water under the sink: Close both hot and cold shut-off valves. If there are no fixture shut-offs, or they do not work, use the main shut-off valve for the home.
Open the faucet to drain pressure: Let any remaining water run out. This also confirms the shut-off worked.
Protect the drain and sink finish: Lay a towel in the sink and cover the drain so small screws cannot disappear.
Remove the handle carefully: Look for a set screw behind the handle or under a small decorative cap. Use the correct size tool so you do not strip it.
Take out the retaining nut or clip: A retaining nut or clip holds the cartridge or stem in place. Keep these parts in order.
Remove the cartridge, stem, or washer assembly: Pull straight where possible. Do not twist hard unless the manufacturer design calls for it.
Inspect the worn parts: Look for flattened washers, cracked O-rings, mineral crust, or torn rubber seals. A damaged cartridge may look scratched, swollen, or stuck.
Clean the faucet body: Wipe away grit and buildup with a clean cloth. Avoid harsh scraping inside the faucet body because scratches can prevent a good seal.
Install the replacement part in the same direction: Many cartridges have tabs or marks that must line up. If installed backwards, hot and cold may reverse or the faucet may still drip.
Use plumber’s grease on rubber seals: Plumber’s grease is a silicone-based lubricant safe for faucet O-rings. It helps seals slide into place without tearing.
Reassemble without overtightening: Snug is enough. Overtightening can crack plastic parts or deform rubber seals.
Turn water back on slowly: Open the shut-off valves a little at a time. Watch for leaks at the handle, base, and supply lines.
Test hot and cold water: Run both sides for 30 seconds, then turn the faucet off and watch the spout for at least a minute.
Recheck under the sink after 10 minutes: Some small leaks only show up after the lines refill and pressure settles.

If the drip returns right away, the issue may be a damaged valve seat. The valve seat is the metal opening the washer or seal presses against. If it is pitted or cracked, replacing only the washer may not solve the problem.

For more basic faucet repair detail, see Tap Tech’s guide on how to fix a leaky faucet. If the leak is in a tub fixture, this guide on simple bathtub faucet leak fixes will be more specific.

Common Faucet Drip Clues and What They Mean

A lasting fix starts with matching the symptom to the right cause. This table can help you avoid replacing good parts.

Symptom	Likely cause	Best next step
Water drips from the spout when off	Worn cartridge, washer, or ceramic seal	Replace the correct internal part
Water leaks around the handle	Worn O-ring or loose packing nut	Replace O-ring or tighten gently
Water appears under the sink only when faucet runs	Loose supply line, sprayer hose, or drain connection	Dry area, run faucet, and trace the source
Handle is stiff or squeaky	Dry or worn cartridge seals	Remove, inspect, lubricate, or replace cartridge
Drip continues after washer replacement	Damaged valve seat or wrong washer size	Inspect seat or call a plumber
Shut-off valve leaks when touched	Old valve packing or failing fixture stop	Stop DIY and repair valve first

Homes near Kingston Mills and heritage properties in Barriefield can have older plumbing layouts, tight access, or mixed piping materials from past renovations. If the repair feels simple until you try to shut the water off, pause and deal with the valve issue first. A working shut-off valve is what turns a small job into a safe job.

You can also review Tap Tech’s guide to shut-off valve tips every home needs before opening any faucet body.

Tips That Help the Repair Last

A faucet repair should do more than stop today’s drip. It should prevent the same call-back problem next month.

Use the exact replacement part whenever possible. “Close enough” cartridges often fit poorly, especially with brand-specific faucets. If the faucet has no visible brand, take clear photos and bring the old cartridge to a plumbing supplier.

Do not use regular petroleum grease on rubber faucet parts. It can cause some seals to swell or break down. Use plumber’s grease made for plumbing fixtures.

Clean the aerator after the repair. Small bits of rubber, scale, or grit can loosen during the work and clog the screen. If water sprays sideways after the repair, the aerator is often the reason.

Replace brittle supply lines if you disturb them. Flexible braided supply lines are not meant to last forever. If they are kinked, rusted, frayed, or older than you can remember, replacing them during a faucet repair is a smart prevention step.

Do not overtighten handles. A compression faucet needs firm closure, but cranking the handle hard wears out washers faster. Cartridge and ceramic disc faucets should shut off with light pressure.

When to Call a Licensed Plumber

DIY faucet repair is worthwhile when the fixture is accessible and the water shuts off properly. But there are times when calling a plumber protects your home.

Call for help if:

The shut-off valve will not fully stop the water: You cannot safely open the faucet if water is still feeding it.
The faucet body is corroded: Corrosion can cause parts to break during removal.
The cartridge is stuck: Pulling too hard can damage the faucet or nearby piping.
Water is leaking below the sink: The problem may be a supply line, drain, or sprayer hose rather than the faucet valve.
The drip returns after correct parts are installed: The valve seat or faucet body may be damaged.
You see swelling, soft cabinet wood, or mould: That suggests the leak has been active longer than expected.

A good plumber should explain what failed, show you the worn part where practical, and test the repair before leaving. If you need a plumber in Barriefield or nearby areas, choose someone who is comfortable with older fixtures, older valves, and mixed plumbing materials.

Frequently Asked Questions

Why does my faucet still drip after I replaced the washer? The replacement washer may be the wrong size, the screw may not be tight, or the valve seat may be pitted. If the metal seat is damaged, a new washer cannot seal properly.

Do I need to replace the whole faucet? Not always. If the faucet body is in good shape and parts are available, a cartridge, washer, or O-ring repair is often enough. Replacement makes more sense when the body is corroded, parts are discontinued, or the faucet has multiple leaks.

Is a dripping faucet an emergency? Usually, no. But it becomes urgent if water is leaking under the sink, damaging cabinets, or the shut-off valve will not work. In that case, shut off the main water if needed and call a plumber.

How do I know what cartridge to buy? Turn off the water, remove the old cartridge, and match it by brand, length, shape, and tab position. Photos help, but the old part is the best reference.

Can I use tape or sealant to stop a faucet drip? Tape and sealant do not fix an internal faucet drip from the spout. They may help with certain threaded connections, but a spout drip needs the internal sealing part repaired or replaced.

A Small Drip Is Worth Fixing Properly

A dripping faucet is usually caused by a worn cartridge, washer, O-ring, or valve seat. Start by finding the leak location, shut off the water safely, keep parts in order, and replace the exact failed component. A careful repair can stop water waste, protect cabinets and fixtures, and help your faucet last longer.

If the steps above did not resolve it, Tap Tech can diagnose and fix it, book online through our Kingston plumbing service page or call (613) 328-6600.

Tap Tech provides reliable dripping faucet repair and residential plumbing service in Kingston, with licensed plumbers, clear diagnosis, and upfront pricing for homeowners who want the fix done right.