Borehole Drilling in Nairobi

Drilling begins before the rig arrives. We assess the site's geology from existing records and neighbouring boreholes, plan the drilling position for both yield and practicality — clear of septic systems, structures and access constraints — and guide the client through the regulatory steps for groundwater abstraction, including the required survey and permitting.

An honest assessment includes telling you what the data does not support. Where a site looks poor or the expected depth makes the project uneconomic, we say so before you commit to drilling rather than after.

The drilling method is matched to the formation — mud rotary through soft overburden, air percussion through hard rock. As drilling proceeds, we log the strata, watch for water strikes, and case and gravel-pack the hole so the aquifer section draws clean water rather than sand.

After drilling, the borehole is developed: flushing and airlifting until the water runs clear and the yield is measured. This step is where many contractors cut corners; skipping or rushing development leaves a well that pumps sand, fouls the pump and silts up within a few years. We develop until the well is stable, then report the tested yield honestly.

A borehole only becomes a water system when the pump, rising main, controls and storage are installed. We select a submersible pump matched to the tested yield and the required delivery — not the biggest model available — fit dry-run protection, and connect the borehole to the building's tanks and distribution.

Commissioning includes water quality advice: new borehole water should be tested before it is put to domestic use, and where results call for it, we install appropriate treatment. We hand over with records — depth, casing, yield, pump setting — so every future service technician knows exactly what is in the ground.