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Lewisville emergency staff review boil-water notification problems; city plans system changes and IPAWS use
Summary
After a recent water-main break and boil-water notice, emergency management staff told the council they reviewed Everbridge results, found primarily account- and delivery-method issues, and plan to adopt shorter SMS messaging, avoid geofencing for some events and pursue IPAWS for wide-area wireless alerts.
City emergency management staff summarized lessons learned from a recent water-main break and subsequent boil-water notice at the March 17 Lewisville City Council workshop and outlined changes to the city's mass-notification approach.
Cindy Casey, emergency management specialist, said the city's vendor system (Everbridge) attempted more than 300,000 notification deliveries during the event and reported "only one true system error". Casey attributed gaps in delivery chiefly to subscribers' account settings, outdated contact information and design choices during the early notification that prevented some landline-only subscribers from receiving the alert.
Casey described multiple causes for missed messages:…
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