The kitchen plumbing is designed based on the functional requirements. The kitchen plumbing system is planned as per the location of the various kitchen gadgets that needs plumbing points for its installation. The most common kitchen gadgets that needs provision for plumbing points include kitchen sink, dishwasher, washing machine , water purifier and water heater. Some kitchen gadgets need both water supply point as well as drainage pipe for the disposal of the waste water. For example, kitchen sink and dishwasher needs both water supply and drainage connection.