Water well deepening

If an existing well no longer supplies enough water, deepening may reach another water-bearing layer.

Deepening starts by opening the bottom of the existing borehole and drilling farther with a smaller drill bit. If a more productive aquifer is reached, the well may deliver substantially more water; in some cases the flow can even double. The result depends on the ground and cannot be promised before assessment.

Before deepening or extending a well, we recommend a hydrogeological assessment to establish the target water-bearing layer and whether the intervention is worthwhile. We discuss the existing casing, access and equipment before starting, then check the usable flow through a pumping test.

• Hydrogeological assessment before work
• Opening the bottom of the existing borehole
• Small drill bit suited to the existing well
• Reaching another water-bearing layer where possible
• Pumping test after completion