Thanks for an informative article on our water supply, which indicates that we generally have very little local storage/supply capability, ranging from zero to 4 days depending on the district. Implications include how quickly we and our fire departments would run out of water in the event of a major earthquake that damages our supply line(s). “There is... no single Northern California or Southern California when it comes to water. Water is a very local phenomenon. And every region and every water district has a different mix of water supply options and water demands." (Quoted text attributed to Peter Gleick, founder of the Pacific Institute, a global water think tank in: Web Link