Water supply systems (ICS code(s): 91.140.60)

DRS 644-4: 2026, Plumbing works — Code of practice —Part 4: Sanitary and drainage system installation; (47 page(s), in English)

This Draft Rwanda Standard provides recommendations and guidelines for materials, design and installation of sanitary drainage systems, building sewers, storm water drainage systems and plumbing systems. It also specifies the requirements for materials, design, and installation of indirect waste piping, receptors, and connections; and provisions for discharge and disposal of condensate wastes, chemical wastes, industrial wastes, and clear water wastes.