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Flagstaff updates lead-service-line inventory and outlines EPA-driven replacement, sampling deadlines
Summary
City staff told the Flagstaff Water Commission the utility has reduced unknowns in its lead and copper service-line inventory, cataloged about 900 galvanized lines and must submit an EPA baseline inventory by Nov. 1, 2027. The city will begin new sampling on Jan. 1, 2028, and must plan to replace 10% of at-risk lines annually.
The Flagstaff Water Commission received a status update Nov. 20 on the city’s lead and copper service-line inventory and new federal requirements under the EPA’s Lead and Copper Rule Revisions. Jolene Montoya, regulatory compliance section director for water services, said the city submitted an initial inventory to the Arizona Department of Environmental Quality (ADEQ) last year and has since reduced the number of unknown service-line materials while adding roughly 200 service-line records.
Montoya said the system has not exceeded an EPA action level for lead or copper over the years. “As for the results we've gotten over the years, we've never exceeded an action level for lead or copper,” she said. She noted the highest measured lead reading in past sampling was 14 micrograms…
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