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Castle Rock water update: low snowpack, potential drought and short-term switch from chloramines to chlorine

Castle Rock Town Council · February 17, 2026
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 briefed the council on low South Platte snowpack and Colorado River uncertainty, and described a scheduled maintenance change from chloramine to chlorine disinfection (Feb. 2—7) that required flushing nearly 500 hydrants and 308 water-quality samples; staff said chlorine levels remain well below regulatory limits.

Mark Marlow of Castle Rock Water told the council that statewide snowpack is well below normal and the South Platte basin was at about 54 percent in the latest update. He warned the council that these conditions and unresolved interstate Colorado River discussions mean the town could face a challenging summer.

Locally, Marlow reported that Castle Rock Reservoir 2 is full and Reservoir 1 is being filled as construction…

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