Where the Lake Dust Gets Decided
The winds last week picked up across the valley, and in addition to blowing over your patio umbrella, they blew a lot of dust across the valley too.
A post from KSL meteorologist Matt Johnson showed a satellite time lapse of dust plumes. And on the same day, a camera on top of the Natural History Museum caught another view of the clouds coating the valley.
You probably have heard by now, the evaporating lakebed holds arsenic, lithium, and a long list of metals that have built up over centuries in a lake that has no outlet. When it’s underwater, it stays put. Exposed, it goes airborne. Every playa reading of arsenic the researchers took ran about ten times the level the EPA considers safe for everyday exposure (playa being what scientists call the dry lake bed.)
And it doesn’t just get into our lungs. A 2026 study found the dust does damage when it ends up in the stomach too, and children under six take in the most, because they swallow more dust relative to their size.
And of course, all that toxic dust doesn’t settle evenly across the valley. The west-side neighborhoods closest to the water breathe the most of it, which is why Daniel Tuutau, who chairs the Poplar Grove Community Council, calls it a ticking time bomb.
So with a drying lake bed due to near constant drought conditions, and mining companies itching to extract that lithium, who gets to decide what we do?
Let’s start by throwing out the “who’s in charge” question, and instead ask who can say yes. To do that, we need to understand all the players and interests at hand.
The People Sitting at the Counter
Let’s start with the mining companies that are seeking the right to draw water from the lake.
The incumbent is Compass Minerals, which has worked the lake’s north arm for more than fifty years out of a 55,000-acre complex of solar evaporation ponds. These evaporation ponds do the most damage to the lake water levels.
When lithium got valuable, Compass wanted in too, but had to suspended its lithium plans under pressure from state leaders. It hasn’t left Utah, though. The ponds are still running, and Compass hasn’t given up on lithium either. Compass is a reminder that extraction of precious minerals here has always cost the lake.
Now, we have newcomer Lilac Solutions, an Oakland startup working through a subsidiary called Waterleaf Resources. They claim they can run the lake’s heavy brine through a fancy ion-exchange filter, strip out the lithium, and put almost all the water right back. No massive evaporation ponds, no shrinking shoreline. If that sounds a bit like the magical promises we hear from data centers, you’re on the right track.
They ran a tiny pilot project, got a gold star from the state, and even signed a ten-year deal to sell the lithium. But they’re missing the actual golden ticket: a water right to pull 225,000 acre-feet a year, about 73 billion gallons, from the lake. To put that in perspective, 73 billion gallons is enough to fill more than a hundred thousand Olympic swimming pools every single year. Lilac swears every drop goes back into the lake, and that promise, and whether those in charge believe it, will determine their future.
And then across the counter are the people who already gave up their share. The farmers and the cities hold the oldest, most senior water rights in the system. In Utah water law, that means they get their water first. They’re also the ones who have spent recent years cutting back to send more down to the lake.
The extractors hold some of the most junior rights of anyone, but just keep on pumping and evaporating.
And then there is the lake itself, which has no water rights, no attorney, and no chair at the counter. The only thing speaking for it is a set of rules the Legislature hastily wrote in the last few years, and the handful of state employees who decide whether to hold anyone accountable to them.
Follow the Money (Water)
Every claim we just walked through, Lilac’s 73 billion gallons, the farmers’ senior water rights, the lake’s missing seat, gets settled at a water-right hearing in front of the State Engineer, and a lease review at the Division of Forestry, Fire and State Lands.
And that’s the door handle we are looking for to be able to map power. This isn’t a flashy meeting. It’s like the Box Elder County Commission, where no one really shows up, because they don’t know that’s where to show up.
The question it is actually settling isn’t about lithium but whether to let a company take the water before it has proven it will give it back. Getting that wrong means draining a lake to mine the very thing already poisoning the people who live beside it.
Those officials aren’t freelancing, though. They answer to the rules, and the rules came from a Legislature that spent four years and roughly a billion dollars saying the lake comes first. But only after west-side residents like Tuutau pushed. The Legislature funded a string of dust monitors, with the first ten going in by July, and that is a real win while also a real tell. A monitor just measures the poison. It doesn’t stop it. It will tell Daniel Tuutau exactly what he is breathing on a cloudy afternoon, and it will not keep the lake from drying.
SO…What’s Next?
The public hearing on Lilac’s water right happened back in 2023, and the comment window is obviously closed. This is how a quiet room stays quiet.
But there’s good news too. The decision itself is still open. The state engineer has not ruled on the 225,000 acre-foot request, and two every day Utahns have already filed protests on the record, asking the obvious question of why a private company gets billions of gallons when farmers, the LDS Church, and cities gave up their share. And in that room, the powers that be are still deciding.
The State Engineer is still listening, and a protest movement like the Box Elder Data Center can happen here too. That’s where the power is mapped to now.
With one caveat. Earlier this year the Legislature passed HB 60, which stripped out the language that let the state engineer weigh impacts to recreation, wildlife and the environment, and narrows what she is even allowed to count as the public’s welfare.
They literally narrowed the legal definition of ‘the public’s welfare’ so you can’t bring those things up. It’s an incredible piece of political theater in a quiet room: spend four years and a billion dollars telling voters the lake is our top priority, and then pass a law making it illegal for the state engineer to protect the birds, the air, or the water when a corporation (or the House Speaker) comes knocking.
And that’s the whole point of a power map. You do not need to out-argue a mining company about ion exchange. You need to know that the lake is decided in an office no one thinks about and during the legislative session.
The government funded dust monitors will keep telling us exactly what we are breathing on a cloudy afternoon, but a monitor just measures the poison, it doesn’t stop it. Whether the dust keeps blowing is a decision that is still being worked out by regular people who refuse to stay home.
The Box Elder data center protest proved that when we look for the small, unglamorous rules, like water rights applications, we can actually move the needle. The opening to save the lake might be shrinking like Alice on the wrong side of the caterpillar’s mushroom, but it is still there. We just have to remember that we are allowed in that quiet room, and we need to walk through the door before they lock it from the inside.
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