The Douglas County commissioners took an important step in helping secure the county's water future at their regular meeting on Aug. 26.
By joining in on the South Metro Water Infrastructure and Supply Efficiency (WISE) Authority's agreement with …
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By joining in on the South Metro Water Infrastructure and Supply Efficiency (WISE) Authority's agreement with Denver Water and Aurora Water, the county will be the recipient of 2,775 acre-feet of water per year for a 10-year period, starting in 2016.
On average, an acre-foot of water is enough to take care of the needs of about two to three families per year, according to multiple sources.
The South Metro WISE Authority is made up of 10 water providers that are all part of the larger South Metro Water Supply Authority. Nine of those water providers — Centennial, Cottonwood, Dominion, Inverness, Meridian, Parker, Pinery, Stonegate Village and Castle Rock — are located in Douglas County. The 10th, Rangeview Metropolitan District, is located in Aurora.
“This region has been working hard for a very long time to bring renewable water supplies into the area,” SMWSA Executive Director Eric Hecox said. “We have a legacy of developing non-renewable groundwater and the effort for many years has been to transition our current population off of groundwater as well as to provide water for future economic development, and I think this project achieves that.”
The WISE project began in 2008 as a way for members to identify processes, cost, distribution, timing, storage and legal issues relating to distributing treated reusable water return flows from Denver and Aurora for use by SMWSA water users.
The group tasked with utilizing this water is the South Metro WISE Authority. The primary purpose of the authority is to reduce members' dependence on non-renewable Denver Basin wells and provide reliable long-term water supply for residents.
“While we often refer to the Denver Basin aquifers in a negative way, they do provide an extremely important drought reserve,” Douglas County Water Resource Planner Tim Murrell said. “By reducing Denver Basin well pumping to a secondary source rather than a sole supply, the basin can continue to be a valuable asset in times of drought.”
In 2013, Aurora, Denver and the South Metro WISE Authority finalized the water delivery agreement. As part of the deal, 100,000 acre-feet of water will go to the authority's providers over a 10-year period.
At the time of the agreement, the authority members were only able to agree on 7,225 acre-feet per year. This left 2,775 acre-feet per year that would be lost if not claimed. Douglas County has been working with the authority members over the last year to reserve the 2,775 acre-feet per year supply for the county.
The WISE members are funding new infrastructure that will move the water from Aurora's Binney Water Purification Facility to its end locations, beginning in 2016. Water purchased by the county, as well as by some of the other providers, will be stored at the Rueter-Hess Reservoir south of Parker.
The county will pay a $97,125 annual reservation fee through 2020; 2,000 acre-feet of water per year will be available for use and purchase by WISE members, and 775 acre-feet will be available for use and purchase by non-members.
“The difficulty and the cost of renewable water projects is growing, and by being able to come together as communities to spread those cost over a larger population and leverage the strengths of different partners, we are able to make these projects successful,” Hecox said.
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