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(905) 238-5242
sales@waterra.com

(905) 238-5242
sales@waterra.com

SIMPLE SOLUTIONS FOR GROUNDWATER MONITORING SINCE 1985
SIMPLE SOLUTIONS FOR GROUNDWATER MONITORING SINCE 1985

Waterra Surge Blocks for Well Development

Waterra Surge Blocks for Well Development and Clean Out

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

Surge and Pump – Uniquely Effective!

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.

Developing a Well with a Waterra Surge Block
Please note - Surge Blocks, Foot Valves and Tubing are sold separately.

Recommended Method Of Use

The recommended method for developing a monitoring well with the Waterra Pump System and Surge Block is to begin the development process with the surge block near the top of the well screen. Operate the pump with the Surge Block – Footvalve combo in this position until the turbidity level of the water being delivered from the pump decreases to an acceptable level. Once this level is reached then the combo is lowered in the well screen one to two feet and the process is repeated.

Developing wells in this manner is one of the best methods, often resulting in turbidity levels below 10 NTUs.

Let’s get started...

Waterra Words of Wisdom

  • Most 2 inch wells (unless they are very deep) are developed or cleaned out with the Standard Flow System
  • Most 4 inch wells (unless they are very shallow) are developed or cleaned out with the High Flow System
  • Due to the forces required you will certainly appreciate a Hydrolift or a Power Pack to do the Well Development or Clean-out.

Surge Blocks For 2 inch (5 cm) Wells - Foot Valves and Tubing sold separately

Waterra Surge Blocks for 2 inch wells
Surge Blocks For 2" Wells
SBD-25 SBD-32
Standard FlowHigh Flow
1.875 inch OD1.875 inch OD
Fits only on D-25 Foot valveFits only on D-32 Foot valve

Surge Blocks For 4 inch (10 cm) Wells - Foot Valves and Tubing sold separately

Waterra Surge Blocks for 4 inch wells
Surge Blocks For 2" Wells
SBD-25-4SBD-32-4
Standard FlowHigh Flow
3.875 inch OD3.875 inch OD
Fits only on D-25 Foot valveFits only on D-32 Foot valve

Special Order Surge Blocks

Please contact us if you require a custom or special ordered surge block .

You May Also Need

D-25 Foot Valve

D-32 Foot Valve

Waterra HDPE Standard Flow Tubing

Waterra HDPE-Standard Flow-Tubing

Waterra HDPE High Flow Tubing

Waterra HDPE-High Flow-tubing

Tubing Cutters

Hydrolift

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