Ask the Expert.
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Customer question: If we stopped building, wouldn’t we have enough water for the future?
Mark Marlowe, Castle Rock Water director:
Much of the growth we’re seeing today was set in motion more than 40 years ago when land was annexed into the Town and zoned for certain uses. We’re now seeing the development as a result of a strong economy and the desirable nature of our community.
Because the land within Town was zoned so long ago, we’ve had the potential growth factored into our long-term water plans for many years.
But, there’s more to the equation. Castle Rock needs a long-term water supply plan whether or not we grow. The underground aquifers which have historically been a primary water supply for all South Metro communities are slowly being depleted. It takes lifetimes to replenish this source. Additionally, Colorado historically goes through periods of drought which affect renewable water availability and demands on our underground aquifers. We need more renewable sources to handle our current and future demands.
Growth is actually helping propel plans, creating economies of scale to build a renewable water system and providing significant funding for these renewable water efforts. Renewable supplies are replenished each year and this comes in the form of local water from our nearby creeks, storage reservoirs we can tap when drought or adverse conditions arise, additional conservation measures for efficient consumption, and importing renewable water supplies from areas where excess supplies are available. One of the most economical, environmentally-friendly and growth-independent sources of water is the water we already have. Castle Rock began reusing water in 2021, and this source will ultimately constitute one-third of our supply. Castle Rock is ahead of our long-term goals of sustainable supplies, which is in part due to growth.
As far as conservation goes, Castle Rock Water advocates for the efficient use of water. We’re not running out of water because we’ve anticipated growth and carefully planned for future needs. However, the more we can encourage consumers to be mindful of water use and waste, the more it will help decrease our long-term costs to develop renewable water resources for existing and future customers.
Learn more from Castle Rock Water Director Mark Marlowe in his interview with Douglas County Commissioner George Teal on the County's YouTube channel: County's YouTube channel