The Colorado River is drying up, and desert cities are panicking. With water levels plummeting due to drought and climate change, places like Phoenix and Tucson face drastic cuts to their water supply. But here's where it gets interesting: San Diego County, home to the nation's largest desalination plant, might just have a solution – and it could change the game for water management in the West.
For the first time, San Diego County’s water agency is considering selling some of its water to parched states like Arizona and Nevada. This bold move, approved in principle by the agency’s board, could mark the first-ever interstate water transfers from the Colorado River, starting as early as next year.
But here’s where it gets controversial: While this plan could provide much-needed relief to drought-stricken areas, it also raises questions about the cost and equity of water distribution. San Diego’s water, already among the most expensive in California, is largely thanks to its investment in desalination. Selling this water to other states could offset costs for local ratepayers, but at what price to those in need?
The Colorado River, a lifeline for farms, cities, and tribal communities across seven states and northern Mexico, has seen its reservoirs shrink dramatically over the past 25 years. Despite extensive negotiations, the states remain divided on how to share the burden of water cutbacks. This deadlock has left cities like Phoenix and Tucson bracing for the worst.
San Diego County’s proposal offers a glimmer of hope. By leveraging its desalination plant and other water investments, the county could free up additional water for sale. The Claude “Bud” Lewis Carlsbad Desalination Plant, operational since 2015, currently runs below capacity due to high costs. However, revenue from out-of-state sales could make it economically viable to ramp up production, providing more water for both local and regional use.
And this is the part most people miss: San Diego’s water abundance isn’t just about desalination. Conservation efforts and upcoming wastewater recycling projects, like San Diego’s Pure Water initiative, are reducing demand and creating new sources. Together, these strategies position San Diego as a potential water exporter in a region desperate for solutions.
If approved by the Metropolitan Water District of Southern California, the federal government, and agencies in Arizona and Nevada, the deal could see San Diego selling up to 10,000 acre-feet of water annually, starting next year. That’s nearly 5% of Las Vegas’s current water use. Over time, this could increase to 25,000 acre-feet or more, with potential expansions to the desalination plant.
Governor Gavin Newsom has thrown his support behind the idea, urging joint investments in water recycling and desalination across the Colorado River Basin. Even Scott Cameron, the Trump administration’s acting head of the U.S. Bureau of Reclamation, has voiced approval.
But the proposal isn’t without its critics. Some argue that selling water across state lines could set a precedent for commodifying a vital resource, potentially exacerbating inequalities. Others question whether this small-scale solution can truly address the massive water shortfall along the Colorado River.
Shivaji Deshmukh, general manager of the Metropolitan Water District, sums it up well: “We need to think about water resources not from political boundaries, but as a region.”
While the amount of water San Diego could sell is a drop in the bucket compared to the Colorado River’s overall shortfall, this approach could be a first step toward collaborative solutions. If successful, it could pave the way for more interstate water deals, easing the strain on this vital resource.
What do you think? Is selling water across state lines a fair and sustainable solution, or does it risk turning water into a luxury commodity? Let us know in the comments below.
