An outside tap can drip, lose pressure, stop running or leak where its pipe passes through the wall. The right fix depends on where the fault starts. A worn washer is different from a split pipe, while a frozen supply needs a completely different response. Begin with safe checks, then isolate the water if you suspect a leak.
That little tap by the back door is easy to forget. Until it will not turn off, the hose stops working or you notice water on the inside wall.
The quick version:
- Remove the hose and check whether the fault is in the tap or the attachment.
- Find the indoor isolating valve and main stop tap before attempting a repair.
- Do not force a frozen tap or try to thaw pipework with a naked flame.
- Check that the tap has suitable backflow protection to protect your drinking water.
Why Is My Outside Tap Dripping After I Turn It Off?
If the water drips from the spout with the tap fully closed, a worn washer, damaged seal or faulty valve may be letting water pass. The exact part depends on the tap design.
First, remove the hosepipe, nozzle or connector. Water trapped in a hose can make a healthy tap look as though it is still leaking. If the spout continues to drip without anything attached, the tap itself needs attention.
A repairable tap may only need the correct internal part. An older body with corrosion, frost damage or worn threads may be better replaced. Do not buy a replacement based on appearance alone; the existing connections matter.
Call a plumber if the tap will not shut off, the isolating valve does not work or the leak continues after a straightforward repair.
Water Is Leaking Around the Handle or Through the Wall
A leak around the spindle or handle points to a different fault from a dripping spout. Water at the rear of the tap could come from the joint, pipework or a crack in the tap body.
Look at where the water actually appears. If the wall becomes wet when the tap is running, do not try to hide the problem with extra sealant. Water can track through the wall or along the pipe and appear somewhere away from the original leak.
Turn off the tap’s indoor isolating valve if it has one. If water continues escaping or you cannot isolate that branch, use the main stop tap. A plumber can check the joint and replace damaged exterior tap fittings without leaving a hidden leak behind the wall.
Why Has My Outdoor Tap Lost Pressure?
Weak flow does not always mean the tap is faulty. Start with the simple checks.
- Take off the hose, spray gun and quick connector. Try the tap without an attachment.
- Check whether the hose is kinked or the nozzle is clogged.
- If the outside flow is still weak, check whether the indoor isolating valve is fully open, provided you can identify it safely.
- Compare the cold water flow at an indoor tap. A whole-house pressure problem needs a different diagnosis from one restricted outdoor supply.
A damaged valve or blocked fitting may also restrict flow. However, never remove or bypass backflow protection just to get a stronger jet. Its purpose is to keep potentially contaminated water out of the drinking water supply.
The Outside Tap Has No Water at All
An indoor isolation valve may have been closed for winter. If so, check the manufacturer’s or installer’s instructions before opening it again, especially after a frost.
If the weather has been freezing, treat the tap or supply pipe as potentially frozen. Do not wrench the handle open. If there is any sign of a split pipe or water entering the property, isolate the supply and call a plumber.
If other cold taps have stopped working too, the problem may be further upstream. Check whether there is a known local water-supply issue before assuming the garden tap needs replacing.
My Outside Tap Has Frozen. What Should I Do?
Freezing water expands. A pipe may split while frozen, with the leak becoming obvious only when it thaws. That is why you should not immediately turn a frozen tap on and walk away.
If you suspect a freeze, locate the indoor stop tap. If a pipe may have burst, turn the water off. For an accessible frozen section, the Met Office recommends gentle thawing with hot-water bottles or warm towels. Never use a blowtorch or naked flame.
After thawing, check the tap, wall and nearby pipework for leaks before returning everything to normal. If you cannot see the pipe inside the wall or the water is escaping indoors, get professional help.
The Hose Connector Leaks, but the Tap Looks Fine
A poor seal at the hose connector is usually easier to spot than a pipe leak. Water sprays around the joint while the spout itself remains sound.
Check whether the rubber washer is present and undamaged. Make sure the connector fits the tap’s thread or hose union rather than forcing two mismatched parts together. A cracked plastic connector may need replacing.
This is also a good time to check the hose. A split close to the tap can look like a faulty outdoor tap, particularly when the water runs down the wall.
The Safety Detail: Many Outside Taps Are Missing
An outside tap is connected to your home’s drinking water supply. If a hose sits in a bucket, pond or paddling pool, contaminated water can potentially be drawn back into that supply.
WaterSafe advises suitable double-check valve protection for ordinary outside garden taps, in line with water fittings requirements. The protection may be built into the tap or installed on the supply pipe. Its presence is not always obvious from outside.
For higher-risk uses, such as equipment involving chemicals, ask a qualified plumber what additional protection is required. Do not assume an ordinary hose connector makes the setup safe.
Keep the end of the hose out of standing water, disconnect it when not in use and seek advice if you are unsure whether your tap has the right valve.
Is an Outdoor Tap Kit Enough for a New Installation?
An outdoor tap kit can be convenient, but buying a box of parts does not guarantee a suitable installation. Check what the kit actually contains and whether its components are appropriate for your water supply.
A properly planned installation may need an accessible indoor isolating valve, compliant backflow protection, suitable pipework and a weather-resistant outside connection. The pipe must be supported and the wall opening finished properly.
When choosing a tap for outdoor use, think about more than the hose connection. A sheltered location, sensible height, access for repairs and a way to isolate the supply in winter all make life easier.
Fitting an Outside Tap: What Should the Installer Check?
For a new tap, the plumber should confirm where the cold-water supply can be taken from and whether the route through the wall is suitable. They should also plan where the isolating valve and backflow protection will sit.
Once the tap is mounted and connected, the installer checks the joints under pressure. A neat outside fitting matters, but so does what you cannot see behind the wall.
The Water Supply (Water Fittings) Regulations 1999 apply to plumbing supplied from the public water supply in England and Wales. An ordinary outside tap in an existing home does not generally need advance notice to the water supplier, but the installation still has to comply with the regulations.
If you are fitting an outside tap yourself, be realistic about the pipework. A competent DIYer may manage straightforward work, but a concealed joint, uncertain isolation or missing backflow protection is a good reason to use an approved plumber.
How Do You Protect an Outside Tap in Winter?
Do the simple jobs before the first hard frost, not when the tap has already stopped working.
- Disconnect the hose and drain it.
- Close the indoor isolating valve if the installation has one, then drain the exposed run as appropriate for the fitting.
- Protect vulnerable pipework with suitable lagging and use an insulated tap cover where appropriate.
- Fix drips before freezing weather. A constant trickle can lead to an icy blockage.
- Know where the main stop tap is and check that you can turn it.
WaterSafe’s winter guidance recommends isolating and draining outside taps where possible. Insulation helps, but it does not replace proper isolation on exposed pipework.
When Is It Time to Call a Plumber?
Call promptly if water appears inside the wall, a pipe may have burst or you cannot stop a leak with the available isolation. You should also get advice if the tap lacks clear backflow protection or the fitting is repeatedly freezing.
For a simple drip, you can often narrow down the cause before making the call. Tell the plumber whether water leaks from the spout, handle, wall connection or hose fitting. A photo of the tap and its indoor pipework can also help.
Sheldon Bathrooms is based in Llanelli and works across South West Wales. If you need an outside tap checked or want to discuss a new fitting, contact Sheldon Bathrooms to confirm availability for your postcode and the work involved. For a significant leak, explain that it is urgent rather than relying on a routine form enquiry.
For a routine outside-tap enquiry, you can also request a quote and include a photo of the tap and a brief description of the problem.
FAQs
Why does my outside tap drip when it is switched off?
Water left in the hose may be draining, or the tap’s internal washer or valve may no longer seal. Remove the hose first. If water keeps dripping from the spout, the tap needs repair or replacement.
Can I repair a leaking outdoor tap myself?
A straightforward connector washer may be easy to replace. Work on the tap or pipework requires a reliable means of isolation and the correct parts. Call a plumber if the leak is behind the wall or you cannot turn off the supply safely.
Does an outside tap need a double-check valve?
An ordinary garden tap should have suitable backflow protection. WaterSafe recommends double-check valve protection for domestic outside taps. Ask a qualified plumber about higher-risk uses involving chemicals or submerged hoses.
What should I do if my outside tap freezes?
Do not force it or use a naked flame. Isolate the water if a burst is possible, thaw accessible sections slowly and check for leaks. Call a plumber if the pipe is concealed or damaged.