Turn off the tap’s isolation valve, or the property’s main water supply, to limit water damage while you arrange help. A worn washer, O-ring or cartridge may be the cause, but avoid forcing fittings or dismantling the tap if you are unsure. In Tasmania, plumbing work may need to be completed by a licensed plumber, so check the current requirements with Consumer, Building and Occupational Services (CBOS) or contact a licensed Hobart plumber. If you rent, report the leak to your property manager or landlord promptly, particularly if it is causing damage.