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Flagstaff staff detail rapid response after 12-inch water main failed, dumping over 1 million gallons
Summary
City staff described a rapid emergency response after a 12-inch water main joint failed and released about 1,100,000 gallons in under an hour; crews isolated the break and restored service to affected businesses the same day. Officials said funds from operations and CIP contingency covered repairs.
Flagstaff City officials on Jan. 27 described emergency work to contain and repair a major water-main failure that dumped roughly 1,100,000 gallons of water in under an hour.
Lee Williams, the city's water services director, said crews and public-safety partners responded immediately. "This one — this one was a gusher," Williams said, adding that distribution staff isolated the break and worked with the city’s contractor to restore service.
Patrick O'Connor, section director of field operations, gave technical details: the failure involved a 12-inch joint that came apart, exposing nearby infrastructure including a natural-gas main and a fiber-optic conduit. "Crews were able to isolate the main within just about an hour," O'Connor said, and service was restored to three affected businesses by 10:00 p.m. that night.
Council members asked whether the break reflected a systemic problem. O'Connor said the failed pipe section dated to about 1974 and was asbestos cement, a material commonly installed in the 1970s and no longer used. He said the particular joint lacked a restraining device and likely failed from material fatigue over decades.
On costs, staff said routine operations and maintenance funds — including a valve and hydrant repair program — paid for immediate emergency work, and the city's capital-improvement contingency could be tapped if expenses exceed the operating account. "We have funds set aside, and if it exceeds our capacity in that account, we have a contingency plan in our CIP that we can tap into," Williams said.
Council members thanked crews and contractors for the rapid work. Officials said main breaks of varying sizes occur in the city about once per month on average, but they emphasized that this event's volume and severity were exceptional. The city said it will continue to prioritize replacing aging infrastructure through its CIP to reduce future failures.
