With sprinklers, imagine a dozen fire trucks hooked up to hydrants and 50 houses trying to operate sprinklers, there would not be enough water pressure for both.
However I have always had an idea, for a house with a pool, you have 10-30 thousand gallons of water sitting there. Why not a battery powered (solar charged) sprinkler system that puts water on the roof (it seems that embers on the roof often cause fires to spread) Have it come on at intervals, like on for 5 minutes off for 10, unless the temperature gets to a preset limit (indicating a greater possibility of fire) Take it a step further and maybe some fire retardant could be mixed in with the pool water before spraying on the roof. It would all have to be automated since you have to figure there is no internet (cell towers burned up) no power etc. In many places this may not work, not enough pools in forest areas. But in L.A. or Malibu where more than 50% of the homes have a pool, and homes are worth millions, what is another 100k for an emergency automated sprinkler system that uses the pool water?
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