Castle Rock Water

Securing our future drop by drop

In 1900, the Castle Rock Journal highlighted our role as a leader in long-term water planning and conservation. After 130 years, Castle Rock Water continues this leadership role and takes to heart its responsibility to protect and preserve the Town's precious resource.

We take our mission very seriously - to provide our community with exceptional service that protects public health and balances social, environmental and fiscal responsibilities in a sustainable manner.

About us

Castle Rock Water is municipally-owned and provides three distinct water services -- drinking water, wastewater and stormwater.

Drinking water

Our drinking water service consists of several treatment plants including our flagship, Plum Creek Water Purification Facility which expanded to include Advanced Treatment in 2020 and ensures safe and reliable water to Town residents and businesses.

Modern day water pipes

Water service includes acquiring the sources of water and ensuring supply for our customers now and in the future. As part of this service, we also protect public health by providing safe drinking water and sufficient supplies for fire safety.


Wastewater is the proper conveyance and treatment of the used water from homes and businesses. Castle Rock Water manages the sewer lines and systems for wastewater in the Town and is a directorial partner in the regional wastewater treatment facility.


Castle Rock Water also manages stormwater which is the rainfall, snow melt and runoff that flows through our community. Stormwater management minimizes flooding and maintains water quality as is flows through the community.

Learn more

We welcome an engaged community and invite our customers to stay informed with how Castle Rock Water serves our community and is making huge strides in ensuring a strong water future.

Sign up for our email list!

Award winning service

We take great pride in our service and our goal is to be a national leader among water utilities, focused on customer satisfaction and delivering outstanding quality and value. The following accomplishments show we are on our way!

  • Pursuing Excellence - Gold 2016-2019
    First water provider in the state to earn the highest ranking by the Colorado Department of Public Health and Environment for actions taken for going above and beyond regulatory compliance.
  • Environmental Leadership Program – Gold 2017-2019
    Awarded by the Colorado Department of Public Health and Environment to companies voluntarily going beyond compliance with state and federal regulations, increasing sustainability and commitment to continual environmental improvement.Our sustainability efforts and Environmental Policy identify our focus toward environmental stewardship and sustainability.
  • Region Water Taste Test - 1st in 2015, 2nd in 2016
    Castle Rock continues to be one of the best tasting waters in the region as recognized by the Rocky Mountain Section (Colorado, New Mexico, Wyoming) American Water Works Association.
  • Excellence in Operations Management - Cartegraph
    National customer recognition for implementation and cost savings parameters.
  • Town of Castle Rock Environmental Design Award
    Awarded for instituting green energy practices in construction and operation of the Plum Creek Water Purification Facility.
  • Engineering Excellence Merit Award
    Excellence in the design and perform presented by the American Council of Engineering Companies.

FIve-Year Strategic Plan 2019-2023

Planning is what ensures the Town has a sustainable water future, especially given changes in growth, economic conditions and climate. The Five-Year Strategic Plan is a detailed framework that will help guide Castle Rock Water in meeting the needs of a growing community with a focus on advancements in technology and full utilization of the resources of the department. This plan builds on the successes and achievements of the previous plan by continuing to diversify supply sources, increase sustainability, provide better service to our customers and make investments in our organization and employees. 

The key strategies listed below sets objectives and goals for the department:

  • Strategy 1: Ensure long-term water
  • Strategy 2: Support, engage and inspire our team
  • Strategy 3: Enhance customer satisfaction
  • Strategy 4: Maintain financial sustainability
  • Strategy 5: Optimize infrastructure
  • Strategy 6: Demonstrate industry leadership
View a copy of the strategic plan.