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Castle Rock Water to temporarily switch disinfectant for system cleaning; officials say water will remain safe

Castle Rock Town Council · November 18, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

Castle Rock Water plans to convert from chloramines to free chlorine for a 60–90 day system cleaning beginning in January; staff said the change may alter taste/color, requires Colorado Department of Public Health and Environment approval, and will include targeted outreach to dialysis centers and other facilities.

Castle Rock Water staff told the Town Council they will temporarily switch the town’s distribution system from chloramines to free chlorine for about 60–90 days to perform a system‑wide flushing and cleaning procedure expected to begin in January.

Mark Marlowe, speaking for Castle Rock Water, said the program involves a detailed flushing and sampling plan that must be approved by the Colorado Department of Public Health and Environment. He warned residents the…

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