The Great ShakeOut earthquake drill on October 17 reminds Californians to prepare for the next major quake. While concerns often focus on physical injuries and damage, seismologist Dr. Lucy Jones highlights a critical issue: the potential loss of water supply. With aqueducts crossing the San Andreas fault, a major quake could leave Southern California without external water for a minimum of six months, leading to widespread challenges such as business disruptions, and daily life operations. Dr. Jones sat down with ABC7 Eyewitness News Reporter Marc Cota-Robles as she urges residents to store extra water in preparation.