From the Introduction: "Healthcare facilities are integral to the health and well-being of the communities they serve. The resilience of a community depends on the ability of its critical infrastructure sectors to reliably respond to its needs, particularly during emergency events. Healthcare facilities make up an essential component of this critical infrastructure and must consistently maintain their water capabilities to meet the needs of their community members. A National Infrastructure Advisory Council (NIAC) Report on Water Sector Resilience identified that healthcare capabilities are degraded 67% - 99% within two hours of water service loss and other community capabilities--such as electrical generation, critical manufacturing, and agriculture and food--are degraded 67% - 99% within 4 hours of water service loss. To ensure that their critical water supply is not compromised by a partial or total interruption in the municipal water supply, it is essential for every healthcare facility to develop and implement an effective Emergency Water Supply Plan (EWSP)."
Centers for Disease Control and Prevention: https://www.cdc.gov/