Thanks for your help. I've found two relays. They will both handle the voltage of my water pump, but I'm unsure which one is best. Can you suggest one of the kits below? Thanks!
The water pump I want to control: Water Pump: 120 volts, 60 Hz, .14 A
$7.95 Beefcake Relay Control Kit SPST-NO 20A Relay (max: 220 VAC @ 20 Amps )
$19.95 Solid State Relay Kit (max: 125VAC @ 8A)