BOREHOLE SITING, DRILLING DEVELOPMENT AND INSTALLATION OF 161NO. HAND PUMPS IN SELECTED DISTRICTS IN WESTERN PROVINCE OF ZAMBIA LOT 1- LUKULU,MITETE; LOT 2- SENANGA,SIOMA, SHANGOMBO; LOT 3- MWANDI, MULOBEZI, SESHEKE; LOT 4 - SIKONGO, NALOLO, LIMULUNGA, KAOMA, NKEYEMA