Borehole Drilling Services in Wajir County

Wajir County, in Kenya's arid north-east, depends on groundwater more heavily than almost anywhere else in the country. With unreliable rainfall and few permanent surface water sources, boreholes are often the only dependable water supply for pastoralist communities, towns, and institutions across the county, and much of Wajir sits above the Merti aquifer system, one of the more significant groundwater resources in northern Kenya.

The Merti Aquifer and Wajir's Sedimentary Geology

Wajir's geology is dominated by sedimentary formations, part of the wider Merti aquifer system that extends across much of the north-east. Boreholes here can be productive, but they also tend to be considerably deeper than boreholes in the highland counties, and water quality, particularly salinity, varies significantly by location and depth, making both siting and water testing especially important.

What the Borehole Drilling Process Looks Like

• Hydrogeological survey and borehole siting, factoring in known patterns within the Merti aquifer system

• WRA permit application, required before drilling anywhere in Wajir County

• Drilling to significant depth, with casing suited to the sedimentary formations typically encountered

• Pump testing to confirm sustainable yield given the scale of demand from communities and livestock

• Water quality testing, with particular attention to salinity

• Solar-powered pump installation, given the reliability challenges of grid power across much of the county

Groundwater Works Kenya has experience siting and drilling boreholes in arid northern Kenya conditions similar to Wajir. A site-specific hydrogeological survey is essential given how much conditions vary across the Merti aquifer system.

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