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Arroyo Grande officials outline April boil-water notice from Zone 3 pipeline; city system never tested positive
Summary
City staff described a brief county-issued boil-water notice tied to routine pipeline sampling from Lopez Lake, saying Arroyo Grande’s own distribution system never tested positive and the county lifted the notice May 3 after follow-up sampling.
City officials told the Arroyo Grande City Council on May 13 that a boil-water notice issued in late April for the Zone 3 water pipeline originated with positive routine samples taken along the county pipeline from Lopez Lake to Port San Luis, not from the city’s internal distribution system.
City Manager Matt Downing said laboratory tests reported two positive total coliform results and one E. coli hit from routine samples taken April 28 and retested April 29. Downing said the county then issued a boil-water notice for the Zone 3 system; Arroyo Grande immediately closed pipeline…
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