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Manual drilling refers to several drilling methods that rely on human energy to construct a borehole. It is appropriate in some hydrogeological environments, where aquifers are shallow and unconsolidated (and therefore easier to drill through) and depth to groundwater (depth to the water table) is shallow. The equipment needed can relatively easily be transported to remote areas. In some ways it is a traditional technique, but the equipment and methodologies have been updated. Modern manual drilling methods are used to provide water for drinking and other domestic needs in at least 36 countries around the world, and in some places are already well established.
When done effectively, manual drilling can reduce drilling costs and increase cost-effectiveness of groundwater development programmes, compared to the costs of drilling using motorised rigs.
Resources to support manual drilling
UNICEF: Manual Drilling Toolkit
This manual drilling toolkit is designed for African countries wishing to improve the professionalisation of manual drilling. The toolkit includes:
- - Technical notes
- - Technical manuals, including the detailed report Professionalizing the Manual Drilling Sector in Africa (2010); and a Manual Drilling Compendium produced by RWSN in 2015.
- - Case studies on the implementation of manual drilling in different countries, including Chad and Nigeria.
- - Maps showing areas likely to be appropriate for manual drilling for 12 selected countries. With this is an accompanying report for each country on how the maps were developed. There is also an overview report (in French / en français). The countries for which maps are available are: Benin, Central African Republic, Chad, Cote d'Ivoire, Liberia, Madagascar, Mali, Mauritania, Niger, Senegal, Sierra Leone and Togo.
- - Advocacy materials, including videos.
- - Recordings of five interactive webinars run by RWSN in 2014 on the subject on manual drilling.
- - A number of other reports, including Professionalising Manual Drilling (2013).
Many of the materials are available in both English and French.
- - On RWSN's website is a very short introduction to manual drilling.
- - RWSN produces the Manual Drilling Compendium (also in the UNICEF Toolkit, above) which provides a useful overview of the impacts and challenges of manual drilling, and support for improving practices on the ground.
- - An RWSN webinar, Manual Drilling – a global perspective of local realities, gives an overview of manual drilling and how the technology has been adopted around the world. This is as well as the five interactive webinars in the UNICEF toolkit, above.
- - Manual drilling case study videos from Chad, Guinea, Niger, Nigeria and Uganda, in English and French.
- - Reports on Professionalising Manual Drilling in Guinea, Malawi and Uganda (2013).