One of the key departments at JWU. It is tasked of studies, planning, inspection, and supervision over infrastructure works executed by the JWU and contractors. Besides, it conducts studies on, investigates and controls Lost Water. It also estimates water connection fees based on field examination, and identifies digital maps using geographic surveying systems.
It consists of: the Planning and Studies Division, under which are the Sections of Lost water and project management, and the Development Division, under which are the Sections of Design and Estimation and the Inspection and Supervision