Before deciding to rehabilitate a borehole, a technical feasibility study must be assessed. It is also useful to know and analyze damage, previous failures, frequency of problem and reasons in order to choose the right technique.

We can rehabilitate boreholes through mechanical and/or chemical means. The process can involve simple compressed air to clean and mechanically scrub, or can extend to much more delicate process such as unclogging slotted casings through chemical cleaning.

If you’ve used your borehole for a long time and you notice that your borehole isn’t producing enough water compared to when it was first dugged. You are not alone. As a borehole ages, the rate that water may be pumped, also known as the yield tends to decrease especially if your borehole was not properly developed when it was first drilled.

Delaying rehabilitation procedures of an already deteriorated borehole can significantly increase costs and in some cases make rehabilitation impossible. To detect deterioration of borehole performance, you must have a point of reference. … obstructions which develop on well screens and rock fractures or openings delivering water to the well screen of the borehole.

Rehabilitation can sometimes involve pump test to understand the characteristics of the borehole to estimate the depth in order to install the right submersible pump and riser pipes if the borehole has been abandoned for long and there are no records of it.