On a still morning in Niland, a small town on the southeastern shore of the Salton Sea, eight-year-old Mia González wakes up coughing. It’s not a cold. It’s Tuesday. Her mother, Cristina, has learned to recognize the pattern: by midweek, the fine white dust from the receding shoreline has settled into their home, coating windowsills, clinging to the floor, and settling deep into her daughter’s lungs. “The doctor says it’s like living inside a sandstorm every day,” Cristina told me. “But we have no choice—this is where we can afford to live.”
Mia is one of thousands of children in California’s Imperial and Coachella valleys who suffer from chronic respiratory problems linked to the Salton Sea—a shrinking, toxic lake that has become a public health crisis in slow motion. A new study published in Environmental Health Perspectives (October 2023) confirms what residents have known for years: the combination of airborne dust, poor housing quality, and systemic inequities creates a perfect storm for pediatric asthma and other lung conditions. The research, led by a team at the University of California, Irvine, tracked more than 2,000 children in the region and found that those living within 10 miles of the lake’s exposed playa had a 35% higher rate of asthma attacks than children farther inland.
“We’ve known the dust is bad,” said Dr. Maria Salazar, a pediatric pulmonologist at Loma Linda University Children’s Hospital who has treated patients from the area for over a decade. “What this study shows—and what families have been saying—is that the dust isn’t the only problem. Caltech Welcomes Astrophysicist Ray Jayawardhana as New President—meanwhile, right down the road, kids are gasping for air because of a century-old engineering mistake.”
A Toxic Dust Bowl in the Making
The Salton Sea was born by accident in 1905, when the Colorado River broke through irrigation canals and flooded the Salton Sink for two years. For decades it was a tourist destination—speedboats, waterfront homes, even a potential resort. But by the 1970s, agricultural runoff, salinity, and dwindling inflows turned the sea into a ecological disaster. Today, it’s shrinking fast, exposing more than 100 square miles of dry lakebed—a fine, mineral-laden silt laced with pesticides, selenium, and arsenic.
When the wind blows—which it does, often—that dust becomes airborne. And it travels. “You can see it roll across the desert like a low-hanging cloud,” said Dr. James Carter, an environmental health researcher at UC Irvine and co-author of the new study. “It’s not just sand. It’s a chemical cocktail. The particles are small enough to bypass the nose and throat and go straight into the alveoli.”
The study measured particulate matter (PM10 and PM2.5) at monitoring stations around the sea and found that levels exceed federal air quality standards on more than 60 days per year—and those are just the recorded peaks. “We’re undercounting because many homes don’t have air filters,” Carter added. “But even if they did, the structural damage is already done.”
Children Bear the Brunt
Kids are more vulnerable to air pollution for physiological reasons: they breathe faster, spend more time outdoors, and their lungs are still developing. In communities like Bombay Beach, Desert Shores, and Salton City, asthma rates among children run as high as 22%, nearly double the national average. Emergency room visits for respiratory distress spike during wind events. “We see it in cycles,” said Salazar. “When a Santa Ana wind kicks up, our pediatric ER in Palm Springs gets a surge. They call it ‘Salton Sea lung’—not a medical term, but it might as well be.”
The study controlled for factors like smoking and obesity, and still the correlation held. But what emerged as equally troubling was the role of housing. “Many homes in these communities are decades old, with single-pane windows, cracks in the walls, and no central air conditioning,” Carter explained. “Families can’t afford to seal their homes. So the dust comes in—literally under the door and through the windows.”
One mother, Lucía Ramírez of Thermal, described how she covers her children’s beds with plastic sheets at night, only to find a layer of white powder on top by morning. “It’s like snow, but it burns your eyes,” she said. Her son, Diego, was diagnosed with asthma at age four. “We bought an air purifier from a thrift store. It helps a little, but it’s not enough.”
Housing and Inequity: A Perfect Storm
The study highlights a grim convergence: environmental hazards don’t exist in a vacuum. The Salton Sea region is one of the poorest in California; median household income hovers around $30,000—half the state average. Many residents are farm workers or day laborers with no health insurance. The nearest pulmonologist may be 60 miles away. “It’s not just the dust,” said Dr. Ana Patel, a community health advocate with the California Endowment. “It’s not being able to take time off work to see a doctor. It’s not having a car. It’s living in a home that belongs to a landlord who won’t fix the windows. All of this stacks on top of the dust.”
Patel points to a 2021 state audit that found California had failed to spend nearly $80 million allocated for Salton Sea restoration and public health measures. “Promises have been made for decades,” she said. “But the money gets re-routed. Meanwhile, kids are sick.”
In October 2023, the Biden administration announced $250 million in new funding for the Salton Sea through the Inflation Reduction Act—earmarked for dust suppression projects, like creating shallow water habitats and planting vegetation. But activists say it’s a fraction of what’s needed, and the timeline stretches into the next decade. “We need to start yesterday,” Salazar said. “Every year the lakebed gets bigger, and more children develop chronic lung disease that they will carry into adulthood.”
Meanwhile, Caltech recently welcomed astrophysicist Ray Jayawardhana as its new president, signaling a renewed focus on interdisciplinary science—exactly the kind of collaboration needed to address problems like the Salton Sea crisis. But for families like the Gonzálezes, progress can’t come soon enough.
“I pray for rain,” Cristina said. “Not just because we need the water. Because when it rains, she can breathe.”
Looking ahead, researchers are pushing for real-time air quality monitors in every school in the region, and for mandatory dust-mitigation plans tied to agricultural water rights. The state’s 10-year Salton Sea Management Program calls for 30,000 acres of dust-suppression projects by 2030, but so far less than 2,000 acres have been completed. “The science is clear,” Carter said. “We know what the problem is. We know what the solution is. The only missing piece is political will.”
For the children of the Salton Sea, the dust isn’t a metaphor. It’s a daily reality that steals breath, school days, and futures. And until the wind shifts—or the state steps up—they’ll keep coughing.
Frequently Asked Questions
What makes the Salton Sea dust so dangerous?
The dust contains fine particles of selenium, arsenic, and agricultural pesticides that can penetrate deep into lung tissue, triggering inflammation and asthma. Unlike natural desert sand, this dust is a toxic cocktail from decades of agricultural runoff.
How can families protect themselves?
Using HEPA air purifiers, sealing windows and doors, and wearing N95 masks during high-wind days can help, but these are costly. Advocates are pushing for state-funded retrofitting programs and free school-based air filtration.
Is the situation getting worse?
Yes. As the Salton Sea continues to shrink, more lakebed is exposed each year. Climate change is accelerating evaporation, and without major intervention, the health impacts will spread to more communities across the Coachella and Imperial valleys.
