DENVER (CN) — Before Sterling Ranch broke ground on more than 12,000 homes on the arid eastern plains of the Colorado Front Range, developers first had to get creative about water. The planned community sits on limited supplies of groundwater, which it shares with surrounding Douglas County.
“The adage is ‘whiskey is for drinking, water is for fighting,’” Brock Smethills, who took over the Sterling Ranch Development Company from his parents and now serves as president, said in an interview. “We've had to build an extraordinary amount of infrastructure to deliver renewable water.”
In the decade since Smethills joined the family business, Sterling built its first homes amid worsening drought. Knowing groundwater access was finite, the developers obtained renewable water from the Dominion Water and Sanitation District, which draws from the Platte River. Precipitation regularly refills lakes and rivers making them a more reliable and renewable water source.
Besides trading water with the City of Aurora and obtaining junior water rights, Dominion and Sterling are piloting the state’s first regional rainwater harvesting program. Though considered innovative today, the design may become the norm in the decades to come.
Complex compacts like this are often needed in places like Colorado, where the distribution of human settlement doesn’t always follow the water. The Rocky Mountains run through the state, as part of the continental divide, determining whether water flows west toward the Pacific or east toward the Atlantic.
“We have this 80/20 rule in Colorado,” Smethills said. “Eighty percent of our population is east of the continental divide with 20% of our water.”
Colorado’s most important resource is depicted on the state seal and printed on cans of Coors Light. It’s not the mountains, but the snow that collects on their rocky peaks through the winter before melting in the spring and summer to supply water to 5.8 million Coloradans, plus millions more people downstream.
Population projections put the Front Range topping 6 million people by 2040 — growth that will require 1.5 million new homes and 244 billion gallons of water annually based on current household use. This rapid expansion raises questions about future water security. Although the Centennial State recorded enough precipitation this year to clear its drought map for the first time in years, the reprieve is likely short-lived in an elevated region undergoing aridification on a warming planet.
With the economic benefits that come from a larger tax base, no one wants to talk about limiting development. Earlier this year, in fact, the state legislature actually passed a bill prohibiting local governments from enacting population caps. Instead, forward-thinking lawmakers, nonprofits and developers are instead redesigning homes and revamping zoning codes to require less water.
The movement grew out of the state’s 2015 State Water Plan, which set a goal of incorporating water conservation measures into local land-use planning for three-quarters of the state by 2025. The state is on track to meet this goal — but even fixes like this are just a drop in the bucket. Municipal water only accounts for 20% of the state’s water use. The bulk still goes to agriculture, which is undergoing its own reckoning around current water use and future availability.
“The issue of scarcity in western water is probably the most foundational issue that we're facing,” said Anne Castle, a senior fellow at the Getches-Wilkinson Center at the University of Colorado Law School, which is named after two environmental law pioneers. “We have to figure out how to maintain the quality of life that we're accustomed to, but we have to figure out how to do that with less.”
To get serious about saving water, policymakers and developers must plan for lower water use from the beginning. “How big a lawn does it have? Is it single family or multifamily? What sort of water conservation is imposed? If you want to get at the root of the problem, you have to look at what the rules are for development approvals,” Castle explained.