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Flagstaff lays out 2025 water production plan; emphasizes backup power and infrastructure repairs ahead of fire season
Summary
City water staff told the Water Commission they will shift more production to groundwater in 2025, pursue repairs at Lake Mary and other treatment infrastructure, and expand backup-power capability to withstand APS Public Safety Power Shutoffs.
City water-production staff presented the 2025 Water Production Plan on May 15, telling the Water Commission the utility will rely more on groundwater this year, proceed with multiple infrastructure repairs and upgrades, and expand emergency backup power ahead of potential APS Public Safety Power Shutoffs (PSPS) tied to wildfire risk.
Brian Hunsinger, the city’s water production manager, said the system started the spring at about 35% of available Lake Mary surface-water supply and has fallen to roughly 26 percent. "It's not a good year for surface water production," Hunsinger told the commission, and the utility will "rely more heavily on groundwater" including increased output from the Woody Mountain Well Field and Lake Mary groundwater sources.
Why it matters: The combined program of repairs, meter improvements and backup power is intended to protect daily delivery during wildfire-season power interruptions and to preserve limited surface-water resources.
Key projects and status - Upper Lake Mary dam spillway repairs: Hunsinger said the Army-recommended work on concrete spalling is scheduled while lake levels are low; contractors (preconstruction services awarded to PCL) are planning repairs this spring. - Lake Mary Water…
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