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South32 Hermosa Mine Discharge Exceeds Antimony Alert Level

By Burstable Editorial Team•
South32 Hermosa Mine in Arizona reports record antimony levels in discharge, exceeding state alert limits and threatening Patagonia's groundwater. Community calls for transparency.

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TLDR

  • South32 Hermosa Mine's discharge shows the highest antimony concentration recorded, exceeding Arizona's Alert Level and approaching regulatory limits, raising concerns about compliance and environmental risks.
  • The October 31, 2025 sample measured 5.73 µg/L of antimony, above the 4.8 µg/L Alert Level and near the 6 µg/L discharge limit, triggering a required 30-day study.
  • This contamination threatens Patagonia's sole groundwater source, risking community health and wildlife, highlighting the need for transparency and protection of shared water resources.
  • Antimony exposure from mining discharge can cause severe health issues like stomach cancer and organ damage, while also harming local ecosystems and wildlife.
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Burstable Editorial Team

Burstable Editorial Team

@burstable

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