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Five years ago, Lisa Clark and her husband left her hometown of El Centro
for Niland, a small town of 500, in search for more affordable housing.
But now they’re paying a hidden cost for living just two miles southeast
of the Salton Sea.

“I’ve been having very bad asthma lately,” the 56-year-old manager of the
Oasis Mobile Village RV Park said. Before, she’d need to use only one
inhaler a year; since moving to Niland, she’s been using three. “It’s
getting worse, and my husband’s been experiencing the same effect. Our
health seems [to be] declining.”

The air quality is notoriously bad near the Salton Sea. As California’s
largest lake has continued to evaporate, it’s become saltier and dustier, causing breathing problems for locals like Clark. Alongside the health
problems is what she describes as a “putrid dead smell” emanating
constantly from the water.

A soon-to-be published study by UC Riverside shows that the Salton Sea’s rotting odors have become a yearlong nuisance for residents in cities near
the lake. The South Coast Air Quality Management District recently issued another odor advisory for parts of the Coachella Valley just north of the Salton Sea, a warning that covered the last six days.

Why does the Salton Sea smell so bad?
Several factors have contributed to this persistent stink, said Caroline
Hung, a doctoral candidate and researcher in the Lyons Biogeochemistry Lab
at UC Riverside.

For starters, the Salton Sea is very polluted, Hung said. “It’s a terminal lake, which means things go in, but they don’t come out.”

A flock of birds flies over the Salton Sea.
Water fowl soar above the Salton Sea. (Irfan Khan / Los Angeles Times) Agricultural runoff from nearby farms deposits fertilizer in the lake,
causing algae to bloom rapidly in a process called eutrophication. When
the algae decays, it consumes oxygen, making the lake hypoxic — a dead
zone without oxygen to support marine life.

The nuisance of the rotten-egg smell is a byproduct of bacteria producing hydrogen sulfide during decomposition. Usually, thermal layers of the lake
trap those odors beneath the surface, Hung said, and residents in the
Coachella Valley would smell the lake only during hot summer days. But in recent years, the lake has become shallower, dropping more than 10 feet in
the last 20 years, which has caused those layers to mix more often and the hydrogen sulfide scent to permeate the area year-long.

Is the stink dangerous? No and yes
Fortunately the stink itself is not a toxin, said Scott Epstein, who
oversees air quality assessments for the South Coast Air Quality
Management District. “Hydrogen sulfide exposure is a bit more of a
nuisance in that it can cause headaches or nausea, but we don’t expect it
to cause any sort of long-term health effects,” Epstein said.

For the record:

2:14 p.m. Aug. 11, 2024An earlier version of this article referred to the
South Coast Air Quality Management District as the Southern Coast Air
Quality Monitoring District.

But researchers have found that there is still something in the dust that
is causing higher rates of asthma among people living near the Salton Sea.
Dr. David Lo, director of UC Riverside’s Bridging Regional Ecology,
Aerosolized Toxins, and Health Effects Center, said the culprit isn’t
actually the chemicals in agricultural runoff.

“The major toxic effect is coming from these bacterial toxins that we are seeing in the dust,” Lo said. “Things like heavy metals and pesticides may
be a concern, but they aren’t really at high enough levels where their
levels in the dust are going to cause disease.”

People are silhouetted on the Salton Sea.
Sediments from the bottom are collected to study effects of runoff from
farms into the Salton Sea in 2021. (Irfan Khan / Los Angeles Times)
As the Salton Sea has become a fertilized petri dish, the prevailing winds
have pushed aerosolized bacteria south to communities in the Imperial
Valley where people have complained of respiratory issues.

It’s less clear if the air quality of the lake has affected local
wildlife. There simply aren’t enough studies, said Jonathan Shore, manager
at the Sonny Bono Salton Sea National Wildlife Refuge.

But we do know that the Salton Sea’s bacteria have also killed the lake’s
fish by depleting its oxygen and increasing its salinity. In 1999, The
Times reported that as many as 8 million fish were dying per day and that
the native tilapia population in the Salton Sea was nearly wiped out.

“When there was a vibrant fish population in the sea, you would see a lot
of pelicans and cormorants and other fish-eating birds,” Shore said. “Many
of those are not around the Salton Sea anymore.”

Are there any solutions?
A state panel rejected a plan in 2022 to revitalize the Salton Sea by
infusing the lake with desalinated ocean water, and residents — many of
them from low-income and marginalized communities — have been left in
limbo.

Two people on a boat at the Salton Sea.
Tim Lyons and Caroline Hung of USC Riverside collect samples from the
Salton Sea in 2021. (Irfan Khan / Los Angeles Times)
But Hung said she has some hope that the lithium deposits, a mile below
the Salton Sea, could be the key to revitalizing the lake. Silicon Valley industries have already begun flocking to the lake for the precious
mineral that is essential for the batteries in electric vehicles.

As the lithium draws a new wave of workers into the area, they’ll quickly discover that “it’s just not a pretty place to live,” Hung said. “It puts
the Salton Sea environmental issues in the spotlight.”

In the meantime, Epstein advises residents to check air quality regularly through the AQMD website and suggests that they follow best practices when pollution is particularly bad.

“Staying inside with your windows and doors closed, minimizing heavy
outdoor exertion, potentially wearing an N-95 mask if you have to be
outside, running an air purifier or an air conditioner can all help reduce exposure,” Epstein said.

Shore lives just south of the Salton Sea in Brawley with his wife and two children. He worries constantly about the air quality and tries to
mitigate its impact in their household.

“I have air filters in almost every room of my house. I change them frequently,” Shore said. “Changing the filters is expensive. It’s
something that I prioritize and can afford, but I recognize that many
people cannot.” In Brawley, the median income is $56,000 per household and nearly a quarter of families live in poverty.

Clark’s cost-cutting move to Niland has proven ironic. Now that her
household medical bills have doubled, she said, it costs as much to live
in Niland as it did in El Centro.

“We’re discussing where we would move,” Clark said of conversations with
her husband as they consider leaving California for Oregon, Colorado or
Utah. “We’re still up in the air about that.”

https://www.latimes.com/environment/story/2024-08-06/the-salton-sea- smellier-and-saltier-than-ever

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