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Damage from the fires included a combination of thermal degradation (i.e., melting, burning, and pyrolysis) of plastic pipes and/or entry of ash, soot, and other debris into the piping and ancillary equipment during the fire event. During a loss of water pressure, contamination was back-siphoned into water service lines, where it entered into the components of the water infrastructure. Exhaustive attempts to flush these contaminants out have been unsuccessful.

The frequency and severity of natural catastrophes in the United States is on the rise. Over the past five years, our nation has experienced an average of 18 one-billion-dollar climate disasters each year. This dangerous trend illustrates the need for our country to invest in the resilience of the structures in which we live and work and the infrastructure that supports our everyday lives. To combat these catastrophic hurricanes, wildfires, and other disasters, we must think more resiliently and build stronger, especially when it comes to critical lifeline infrastructure systems.

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A recent example of this dynamic was present in the water infrastructure in Santa Rosa, California in 2017, in which residents were dealt not one, but two crushing post-disaster blows. Following the Tubbs wildfire, Santa Rosa residents were prohibited from returning to their homes to assess damage because of a new threat: sinkholes and landslides. Due to extreme heat from the blazes that destroyed more than 5,000 homes and killed 23 people, plastic storm drains running underground melted, which created the risk of collapses and slides following subsequent heavy rains. Overall, approximately thirty-one locations across Santa Rosa were identified that caused concern for sinkholes because of melted water infrastructure. This slowed recovery in several ways, such as forcing reactivation of the Emergency Operations Center, creating the need for door-to-door alerts, and the deployment additional resources in an already constrained scenario for the community.

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We must help our communities rebuild and recover while providing them with the necessary resources to prevent future destruction. It’s time to stop the endless cycle of rebuilding to the same, outdated standards after each disaster. As the Santa Rosa community experienced, the effects of a disaster can stretch far beyond its initial impact. Mitigation saves lives, property, taxpayer money, and the environment. Most importantly, mitigation provides peace of mind to those in the path of disasters.