Chi Lung Wang
The Chinese folklore the Chi Lung Wang is the protector of domestic water supplies and is the one who is in charge of the pumps when it comes to putting out fires. Chi Lung Wang name means Fire-Engine King Dragon and he is a dragon who is under obedience to the dragon king Lung Wang, who is the provider of water to the whole earth.
John and Caitlin Matthews, The Element Encyclopaedia of Magical Creatures, 2013, Chi Lung Wang, p 103