https://www.nytimes.com/2018/05/26/realestate/how-new-york-water-tanks-work.html
the new wtc has 16 water tanks
apparently there are no water pumping stations in nyc - everything is
gravity fed - any bld above 6 floors needs a water tank on the roof
we had no idea
does that mean there is only 30 pounds pressure in every nyc hydrant?
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