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20260713 Cisterns throughout the area, portable water supply systems (PWSS) (miles of flexible hoses laid on-demand) fed by lakes, and valves on the domestic water supply are cheaper alternatives to dedicated firewater systems.rtf
20260713 Gemini says HPFSs ended because fire engines could hook up to ordinary, lower-pressure domestic water lines and boost the pressure themselves right at the scene [!!!].rtf
20260713 While other cities found the systems redundant, San Francisco maintained and aggressively modernized its Emergency Firefighting Water System (EFWS) because its primary threat is not standard urban decay, but seismic catastrophe.rtf