Castle Rock implements new Colorado scape regulations to conserve water and reduce costs

The Douglas County Water Commission convened on May 19, 2025, to discuss critical strategies for enhancing regional water supply and conservation efforts. The meeting focused on the importance of collaborative infrastructure and innovative conservation practices to address the challenges of water supply in the region.

The session began with a discussion on the benefits of regional infrastructure in reducing the costs associated with long-term renewable water supplies. A representative emphasized that by partnering with various utility districts, the financial burden of water supply can be distributed across a larger customer base. This approach is particularly vital for smaller utility districts facing stringent regulations and the need for capital asset rehabilitation.

Key partnerships highlighted included the WISE Authority, the Chatfield Reservoir Mitigation Company, and the Platte Valley Water Partnership. These collaborations aim to optimize water usage and enhance the efficiency of water distribution across Douglas County. The representative noted that existing physical connections with neighboring water providers, such as Parker Water and Castle Pines Metro District, facilitate better resource management.

A significant portion of the meeting was dedicated to water conservation strategies. The commission discussed the need to reduce outdoor water usage, particularly for nonfunctional turf, which accounts for a substantial portion of water consumption. The representative pointed out that approximately 40% of water supply in Castle Rock is used for outdoor irrigation, primarily for ornamental grass that serves little functional purpose. The commission advocates for transitioning to "Colorado scape" landscaping, which utilizes drought-resistant plants and minimizes water use.

The financial implications of water conservation were also addressed. The commission estimates that achieving a target of 100 gallons per day per capita could save customers around $70 million in capital expenses over time. This underscores the importance of efficient water use, especially in a region where water is a precious resource.

Additionally, the commission aims to decrease peak water usage, which can spike significantly during summer months. Strategies to manage this demand include encouraging customers to adopt water-efficient practices and reducing nonfunctional turf in new developments. The commission has already implemented regulations limiting nonfunctional turf in new residential projects, which have received positive feedback from home builders.

The meeting concluded with a focus on the importance of water storage as a key component of the overall water management strategy. The commission's ongoing efforts reflect a commitment to sustainable water practices that not only address current needs but also prepare for future challenges in water supply and conservation.