Why is Castle Rock Water asking residents, HOAs, and commercial customers to conserve more water?

We are being proactive and asking for your help. Every year before summer, Castle Rock Water prepares a Summer Demand Plan, which helps predict what the summer water supply demand will look like. This plan takes into account new water supplies, weather projections and other changes in our community.


The recent hot, dry weather and lack of rain has resulted in East Plum Creek, one of our renewable water sources in Castle Rock, dropping to record low levels. Our proactive approach to conservation during this hot weather, is about peak demand on our systems. Castle Rock Water has a deep groundwater supply. And now, we also have renewable water. Still, we want to be mindful of all of our resources.


What does peak demand mean? Imagine four people in your house all taking long, hot showers at the same time – all while the dishwasher and laundry machine runs on the hot cycle. The hot water heater cannot keep up with the demand all at once, so next time, you may reduce the time in the shower ¬– much like we are asking residents, HOAs, and businesses to do with outside watering.


Lately, residents, HOAs and commercial customers have been using more water than normal. Typical water usage over the summer is about 12.4 million gallons per day. (Typical water usage outside of summer/irrigation months averages approximately 4 million gallons per day.) The past few weeks, the community has been using up to 16.5 million gallons daily. That’s a 25 percent increase, and it’s putting stress on our system during peak times. It’s not that we’re running out of water, it’s that our infrastructure cannot keep up with the peak demand.


For Castle Rock Water it means at certain times of the day the water in our storage tanks is being used by outdoor watering faster than the tanks are being filled. To keep up with that demand, Castle Rock Water is asking residents to be mindful of their outdoor water use. Additionally, HOAs and commercial customers are being placed on a three-day-per-week watering schedule.


What does this mean for you? Help us be proactive in managing our water resources. Stick to the every-third-day watering schedule and work to reduce usage by at least 20 percent. That means if you are watering 10 minutes per cycle, cut back to 8 minutes. That’s really all your lawn needs! Additionally, residents can water between the hours of 8 p.m. and 8 a.m., and commercial customers can water between 10 p.m. and 5 a.m. Keep in mind, if you water in the middle of the day, temperatures are so hot, you can lose up to 50 percent of that water due to evaporation.


Most importantly - you don’t need to water every day. Being efficient with your outdoor watering can help your landscape be healthy and save water.


If you’re looking for more ways to cut back, Castle Rock Water will be adding additional funds to the rebate program. Head to CRconserve.com for more conservation tips or to apply for the rebate program.


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1. Why is Castle Rock Water asking residents, HOAs, and commercial customers to conserve more water?