This tender invites bids for the construction and rehabilitation of various water supply and sanitation schemes in Khyber Pakhtunkhwa, specifically in Dir Lower and surrounding areas. The works include supply and installation of pumping machinery, solarization of water supply schemes, and augmentation of existing water supply systems. The projects are aimed at improving water supply infrastructure and sanitation facilities under multiple ADP numbers. The procurement follows KPPRA procurement rules 2014 with specific bid security and tender form fee requirements. The contract includes phased release of payments based on project milestones and strict compliance with provincial government rules.