windshield washer fluid

well, my windshield washer fluid doesnt work at all, i added fluid and it didnt do anything anyone know what may cause the fluid to not work??

The pump perhaps?

most likely the washer check valves. depending on what model car you have of course. the check valves are famous for clogging. ususally the check valves will leak and you wont get anythign out of your nozzles. does the pump sound like it is runnign when you turn it on? if not it will be the pump.