Meandering and babbling natural streams and springs through hills offer a beautiful scenery. But the same could also be a source of despair for the tribal farmers in the neighborhoods, if their crops wither due to lack of life-saving irrigation water. Tapping and diverting those steams and springs for providing drinking water and irrigations through ‘Gravity Pipe Networks (GPNs)’ has been attempted by many development workers in recent years. Such pipe networks, if arbitrarily sized, results in undue capital costs; operational difficulties to tribal farmers and huge maintenance costs during later years. Water and Livelihoods Foundation (WLF) offers this training course to develop optimal plans of GPNs using EPANET, a software that does analysis of complex pipe networks in a jiffy. This training course is designed for those technical staff of NGOs and other development agencies to orient themselves on the basic principles of gravity-based pressurized water flow in pipes and to design simple but efficient GPNs in hilly areas using EPANET.