shall be permitted in care facilities with five or fewer individuals in a

single-family dwelling. 903.3.5 Water supplies. Water supplies for automatic sprinkler systems shall comply with this section and the standards referenced in Section 903.3.1. The potable water supply shall be protected against backflow in accordance with the requirements of this section and the Puerto Rico Plumbing Code. For connections to public waterworks systems, connections to water main must be made in compliance with the Reglamento de Normas de Diseño of the Puerto Rico Aqueducts and Sewer Authority or the delegated utility entity. 903.3.5.1 Domestic services. Where the domestic service provides the water supply for the automatic sprinkler system, the supply shall be in accordance with this section. 903.3.5.2 Residential combination services. A single combination water supply shall be allowed provided that the domestic demand is added to the sprinkler demand, where required, shall be as required by NFPA. CHAPTER 10 - MEANS OF EGRESS