This research effort developed a technique to assess the adequacy of the municipal water supply for residential sprinkler systems installed in one- and two-family dwellings. This effort is a continuation of a recently completed project which investigated cost-effective techniques for alleviation of deficiencies in the municipal water supply. In that effort a need was identified to develop a technique to evaluate the adequacy of the municipal water supply. This report includes characterizing typical plumbing flow fixtures in residences to permit an anlysis of the domestic water supply within a residence. Having characterized the residential flow devices, techniques to evaluate the domestic water supply are investigated. This investigation considers the feasibility of developing an inexpensiv prototype apparatus with which to conduct the water supply evaluations. Based on the water supply evaluations, an assessment of the adequacy of typical domestic water systems for satisfying water demand requirements of residential sprinkler systems are documented. The water demand requirements for residential sprinkler systems were selected from the initial phase of this research which investigated techniques to alleviate water supply deficiencies.