OK there is water coming from the pump although I have no pressure 10 right now. I'm going to let it run and see if it builds up. i forgot to mention one thing that might have been important. When we primed the pump after getting the cistern filled one of the black PVC pipes out from the pmp burst! I've seen them split, crack but this actually put a hole as though it bubbled out till it broke. Back to the pump...as I said it is running but it doesnt sound well either. It goes from sounding normal to almost a straining sound. Since this is the only water source we cant turn it off unless absolutely imperitive. How long should it take for the sytem to build up pressure?