How To: Outdoor Taps
Planning considerations for an outdoor tap, from location and water-supply control to testing, backflow protection, and maintenance.
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An outdoor tap makes gardening, washing, and exterior cleanup more convenient. A reliable installation starts with the right location, compatible materials, safe connection to the water supply, and protection against contamination and weather.
Plan the installation
Choose a practical location
Consider the distance to a suitable water line, the hose reach, drainage around the wall, and enough clearance to operate the tap and connect accessories.
Confirm the required parts
The pipe material, tap assembly, isolation valve, wall construction, and local backflow or freeze-protection requirements determine which fittings and tools are appropriate.
Protect the water supply
The water must be shut off and pressure relieved before a line is opened. The new branch should include an accessible means of isolation and any backflow protection required for the installation.
Fit and support the tap
The connection should follow the instructions for the specific pipe and fittings. The tap body needs firm support so normal hose use does not twist or strain concealed pipework.
Any exterior wall opening should be sized and sealed appropriately for the wall system. A poor penetration can allow water or pests into the building envelope even when the plumbing connection itself is sound.
Test before regular use
Restore the supply slowly, then inspect every accessible joint and the tap body for leakage. Test the shutoff, tap operation, and hose connection while watching for movement or strain.
Do not cover a new connection until it has been checked under normal water pressure.
Maintain and protect it
Inspect the tap and nearby pipework periodically for drips, corrosion, movement, or damage. Disconnect hoses when they are not needed and follow the installation's cold-weather protection requirements before freezing conditions.
Careful planning and a code-appropriate connection make an outdoor tap more useful and less likely to create leaks or water-quality concerns later.