News and Announcements

Posted on: March 16, 2017

Minor issue at Meadows water treatment plant may impact smell for some water customers


Some residents near Butterfield Park in The Meadows could be waking up to an unusual smell in their water this morning. For a limited time, a glitch at the water treatment plant in the neighborhood caused the system to overfeed chlorine while treating water Wednesday. Ensuring customers have safe, quality drinking water is the No. 1 priority for Castle Rock Water. This morning, the department wants customers to know, your drinking water is safe.


The defect happened at about 9 p.m. Wednesday at the water treatment plant in The Meadows. The plant had been shut down for the season. However, crews were restarting the plant to accommodate water supply needs during maintenance at the Plum Creek Water Treatment Facility.


For about 15 minutes, the automatic measuring system overfed chlorine while treating the water. Crews testing The Meadows plant’s water quality identified the malfunction. The system was then flushed last night to remove the water with excess chlorine.


Chlorine is a disinfectant used during the water treatment process. These slightly increased levels do not pose any health risks to the general public. Residents near Butterfield Park may notice an unusual smell in their tap water this morning. Customers may also notice a slight skin and eye irrigation after showering. This is similar to a pool that has been treated with a higher than normal chlorine level. Crews are in the neighborhood flushing the system for a second time this morning.


This was an isolated incident and does not pose a danger to the public. Castle Rock Water is now evaluating procedures to make sure this minor issue with this treatment plant does not reoccur.


Customers who notice an unusual smell in their tap water should contact Castle Rock Water at 720-733-6000. Also, impacted residents should let their faucets run for a few minutes to flush their internal plumbing. Please contact Castle Rock Water if that does not resolve the issue.


It’s also important to note that customers requiring kidney dialysis should also contact Castle Rock Water about their water quality. While chlorine does not pose a risk to the general community, the disinfectant could impact kidney dialysis machines. Castle Rock Water has worked with medical facilities in the area to ensure they did not receive the impacted water.


Curious about how Castle Rock’s water is treated? Learn more at


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