[jyl]

When a house burns, plastic or PEX water supply pipes melt, releasing water pressure. Or the water in copper or steel pipes boils and steam pressure ruptures a pipe or fitting or fixture, releasing water pressure. So as more houses burn, the water pressure goes down.

Water pressure or no, firefighters can’t do much to stop a big Santa Ana-driven wildfire charging out of the canyons and barreling to the ocean.