Abstract: A water valve body includes a filter valve and a lower solenoid valve seat, both of which are integrally formed of plastic. The filter valve, as well as the lower solenoid valve seat, has an internal channel connecting an inlet end and an outlet end. The outlet end of the filter valve is connected to the inlet end of the lower solenoid valve seat, with a packing or a sealing element provided at the connecting position. In contrast to the conventional water valve body that is integrally formed of metal, this plastic-made water valve body is free of pollution associated with the leaching of heavy metals and incurs lower material cost. Besides, the plural components of the water valve body are selectively replaceable when damaged and thus also incur lower maintenance cost.