Waterra Surge Blocks for Well Development

Waterra Surge Blocks are excellent low cost tools for Developing, Surging and Cleaning out Groundwater Monitoring Wells.

Designed to work with the Waterra Pump System, Surge Blocks are tough thermoplastic donuts that press fit onto either a Standard Flow D-25 Foot Valve or a High Flow D-32 Foot Valve. There are 2 choices for both Standard Flow and High Flow systems to accommodate either 2 inch or 4 inch wells.

Please note that Surge Blocks, Foot Valves and Tubing are sold separately

The Waterra Well Development System is one of the most effective methods for developing monitoring wells because it simultaneously surges and pumps the well. This system can also be utilized to remove silt and sediment that has accumulated in the foot of the monitoring well.

In detail, the Surge Block – Footvalve combo is matched to fit just inside the well diameter leaving a 1/16 inch annular gap so that water doesn’t flow easily around the combo. As the combo is reciprocated up and down in the well, water is both forced into the formation and sucked out of the formation. This breaks down bridging and mobilizes the fines in the formation which are pumped up through the Footvalve and removed from the well.