Town operator reports two lead-positive samples; ADQ guidance and retesting pending

Oct 17, 2025

The town's water contractor said two of 10 routine lead-and-copper sites—town hall and the wastewater plant—tested above the action threshold; officials were told the threshold is 15 parts per million and the tests showed about 19 ppm; ADQ will direct next steps and retesting timelines.

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At a council meeting, Nathan Estes of Skateboard Services, the contractor that operates Mammoth's water and wastewater systems, told elected officials that annual lead-and-copper sampling found two sites above the action threshold. "This year, we had 2 of them that tested positive for lead," Estes said, explaining the town samples come from 10 representative sites chosen by home-build dates and neighborhood location.

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