The Waterra Hydrolift Pump is a portable, electrically operated tubing actuator that will oscillate vertically, the Waterra Foot Valve-Tubing Combo in your monitoring well. It will give a big efficiency boost to your field sampling program when using the Waterra Pump System. This actuator is designed for purging, developing, and sampling 2 inches (5cm) diameter monitoring wells up to 150 to 200 feet (45 – 60m) deep. This actuator is optimized to operate with the Standard Flow System up to its maximum effective depth and will operate with the High Flow System up to a depth of 150 feet (45m).