Colorado's water shortage isn't hitting every town equally. Douglas County's south metro providers moved off a non-renewable aquifer through the WISE Partnership and have secured long-term supply. Some fast-growing northern towns, like Severance, have paused new building permits. Before buying in Colorado real estate's growth areas, check the specific town's water source, not just the county's growth numbers.
One Colorado town froze new home construction this year. Not because of zoning or a recession, but because it ran short on water. Meanwhile, the south metro suburbs keep growing, with water secured for the long haul. Same drought, same state, completely different outcomes. The difference is who planned ahead.
The South Metro Problem Nobody Talked About
For decades, much of the south metro, including Highlands Ranch, Parker, and Castle Rock in Douglas County, relied on the Denver Basin aquifer. That's groundwater trapped for millions of years. Once you pump it out, it doesn't meaningfully refill. Some estimates put parts of the region on a countdown measured in decades, not centuries. It was like building a city's future on a battery that only drains.
How Douglas County Fixed It
In 2004, 13 local water providers in Douglas and Arapahoe counties formed the South Metro Water Supply Authority specifically to get off the aquifer. In 2016 that became the WISE Partnership (Water Infrastructure and Supply Efficiency), a deal between Denver Water, Aurora Water, and the south metro providers to share renewable snowmelt water instead of mining groundwater.
That's not a minor fix. It's a region that saw a hard deadline and solved it years before it became a crisis. It lines up with the migration data, too: Douglas County is one of the fastest-growing counties in Colorado right now, and that's partly the payoff of a decision made 20 years ago.
The Other Approach: Buying Water
Not every suburb solved it by cooperating. Some bought their way there. Thornton, north of Denver, has grown from about 50,000 residents in 1985 to roughly 158,000 today. In the 1980s it quietly bought farms in Larimer and Weld counties for their water rights, and it's now building a roughly 70-mile, half-billion-dollar pipeline to move that water south. Larimer County fought it for more than a decade, denying it in 2019 before the courts got involved. Thornton won, and construction is underway.
Aurora has done the same, buying water rights from Weld, Washington, Logan, and Morgan counties to fuel its growth. The uncomfortable truth is that a meaningful share of northern Colorado's water isn't staying in northern Colorado.
Who's Caught in the Middle
- Severance (Weld County): one of the fastest-growing parts of a fast-growing county, it froze new residential building permits this year while its water provider works to catch up on pipeline capacity. Some landowners who planned to sell land to fund retirement saw its value drop sharply overnight.
- Castle Rock: banned most new grass turf at new homes to protect long-term supply.
- Arvada: nearly doubled its water and sewer connection fees, to around $54,000, so new growth pays for its own water instead of straining the existing system.
None of these places is out of water. But each is being forced, in real time, to answer the question Douglas County answered 20 years ago: who pays for water security, and when?
How Colorado communities are handling water (as of September 2026)
What Colorado's Water Shortage Means for Home Buyers
- Douglas County: you're buying into a region that fixed its hardest infrastructure problem before it became a crisis. That's a genuine long-term positive, not just a lifestyle preference.
- Weld County: still a strong growth story, but do your homework on the specific town, not just the county. Some communities have secure supply lined up through projects like NISP; others are hitting real walls. County-level growth numbers can hide a lot.
- Towns raising fees, like Arvada: not necessarily bad news. It usually means the city is being honest about what growth costs instead of deferring the problem.
Here's the real takeaway: growth numbers tell you where people are moving right now. Water infrastructure tells you whether that growth can continue. In Colorado right now, those two don't always point the same direction. It won't show up in a listing description, but it matters as much as almost anything for where you buy long-term. (For the homeowner side of drought, see what Denver's water restrictions mean for you and our xeriscaping guide.)
Frequently Asked Questions
Is the Denver area running out of water?
No. The Denver metro isn't out of water, but communities are in very different positions. Douglas County's south metro providers secured renewable supply through the WISE Partnership, while some fast-growing northern towns, such as Severance, have paused new building permits while water infrastructure catches up.
What is the WISE Partnership in Colorado?
WISE (Water Infrastructure and Supply Efficiency) is a partnership formalized in 2016 between Denver Water, Aurora Water, and south metro water providers. It shares renewable river and snowmelt water so the south metro can reduce reliance on the non-renewable Denver Basin aquifer.
Why did Severance, Colorado freeze building permits?
Severance paused new residential building permits in 2026 while its water provider worked to add pipeline capacity to serve new homes.
Should water supply affect where I buy a home in Colorado?
Yes. Water supply is a long-term factor for growth, fees, and landscaping rules. Buyers should look at the specific town's water sources and plans, not just county-level growth numbers.
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About the Author
Jason Dalbey is Team Lead of The Denver Group and has been a Denver real estate broker for more than 11 years, helping hundreds of clients buy, sell, and relocate across the Denver metro. He explains the city, the market, and the deal on YouTube at @jasonindenver. Contact The Denver Group to talk through your move.
Published by The Denver Deal | thedenverdeal.com | Real estate coverage by The Denver Group | denvergroupre.com
