• Location: Colfax, CA
  • Tank Size: 300k-gal, 600k-gal, 1MG
  • Tank Type: Welded Steel
  • Problem: THMs

Active Mixing and Ventilation Provide Energy-Efficient THM Removal

Colfax, CA

In the summer of 2014, Placer County Water Agency in California was facing a trihalomethane (THM) crisis. THM levels were forming quickly during primary treatment, and THM levels in the clearwell tanks at their Colfax system were particularly high. Under a tight deadline and with limited emergency funds, PCWA wanted to explore how much THM reduction they could achieve with just active mixing and active ventilation alone.

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