Water Quality

Castle Rock has more than just good water quality! According to the taste-test judges at the Rocky Mountain American Water Works Association, Castle Rock Water had the best water in the region in 2015, and in 2016 we took second place! Various municipalities from a three-state region (CO, WY and NM) compete annually for the title of best drinking water based on taste, odor and appearance. Castle Rock Water is proud to provide residents with great tasting and reliable water.

Water quality is a public health responsibility and Castle Rock Water regularly meets or exceeds all State and Federal regulations.

Treating water includes monitoring the intake of our raw water, having a multi-step filtration and treatment process, and adding a disinfectant to the water before it travels through the distribution pipes and into your home or business. Castle Rock Water tests our water throughout the distribution system. You can view the results of these tests in the current and past water quality reports.


Tour the treatment process


We invite you to take a tour of the Plum Creek Water Purification Facility to see how our water is treated with a multi-step process to ensure safe, reliable water.