"Cal Fire was able to jump on it and use our Heli-Hydrant, trigger it and keep the fire to five acres," said John DeCriscio, who was operations manager at the Yorba Linda Water District at the time. "That was a huge success."
San Francisco implemented a comprehensive solution after the city was almost completely destroyed in the 1906 earthquake and resulting fire, which also caused most hydrants to run dry.
In 1913, the city developed a unique fire-suppression water system separate from the rest of the city's water. Seawater enters the system from 52 suction connections along the waterfront, and it's pumped in from fireboats and two high-pressure pumping stations. There are more than 200 underground cisterns to store backup water. A high-elevation reservoir and two large-capacity tanks use gravity, not pumps, to feed special high-pressure emergency hydrants that can be seen around the city with black, red and blue tops.