Abstract: An integrated water distribution network supplies the requirements of both domestic and fire sprinkler water fixtures in a dwelling structure. The network includes a plurality of multiport fittings which are interconnected together with flexible conduits. A conventional fire sprinkler is also coupled to the multiport fittings. The network is supplied water by a plurality of water supply lines which originate at a manifold. Individual water fixtures are connected to the distribution system through flexible lines. During use of an water fixture, water flow through at least a portion of the system, including at least one fire sprinkler coupling, is established. The distribution system can thus characterized as a “nonstagnant” water network for supplying both domestic and fire sprinkler requirements of a structure.