A pump device includes a first pump and a second pump. The pump device also includes a driver and a controller. The first pump and the second pump are connected in parallel with each other on an electric power supply path from the driver. The controller is capable of acquiring an impedance value of the first pump and an impedance value of the second pump, and identifying, as a specific pump, a pump having a minimum impedance value from among the first pump and the second pump. The controller is capable of controlling the driver such that a drive current to be supplied to the first pump and the second pump has a value less than or equal to a prescribed current value.