Keep Your Taps Happy with Happy Tappy Happy Tappy is a Maddington based Plumbing & Gas company with over 37 years experience. Happy Tappy services a 20km radius from Maddington with their plumbing & gas services and is also an emergency plumber. Our primary work involves leaking taps and fittings, full tapware replacements, backflow prevention, toilet repairs & replacements, plumbing for renovations. Gas and Hot Water services include gas bayonet installs, hot water system servicing, hot water system replacements and gas leak detection.