The Code of Practice sets out nine principles that relate directly to the practicalities of borehole construction. They should be adhered to in order to provide cost-effective boreholes.
DANERT, K. ARMSTRONG, T. ADEKILE, D. DUFFAU, B. OUEDRAOGO, I. KWEI, C. (2010): Code of Practice for Cost Effective Boreholes. St. Gallen: Rural Water Supply Network (RWSN) URL [Accessed: 11.03.2019] PDF