EPA chief demands that Mexico stop Tijuana sewage from flowing into
California
[April 23, 2025]
By JULIE WATSON
SAN DIEGO (AP) — The head of the Environmental Protection Agency said
Tuesday that Mexico must stop the flow of billions of gallons of sewage
and toxic chemicals from Tijuana that has polluted the Pacific Ocean off
neighboring Southern California, closing beaches and sickening Navy
SEALs who train in the water.
Lee Zeldin made the demand during an Earth Day trip to the
California-Mexico border, where he toured a plant in San Diego County
that treats the sewage as a secondary facility and flew along the
frontier to see the Tijuana River. He also was scheduled to meet with
SEALs.
Zeldin said that in the next day or so, his agency will present Mexico a
to-do list of projects to resolve the decades-long environmental crisis,
but he stopped short of specifying how the Trump administration would
hold Mexico accountable if it does not act.
The problem is “top of mind” for President Donald Trump, Zeldin said,
while adding that they have not talked about possibly imposing tariffs
if nothing is done.
“We’re going to know whether or not Mexico is going to do its part to
resolve it, and then we’ll go from there, as far as strategy and
tactics,” Zeldin said.
Alicia Bárcena, Mexico's Environment and Natural Resources secretary,
said her country also wants to resolve the problem. She met with Zeldin
the previous evening and said they made progress in finding solutions.
“We are here because we want to solve this,” Bárcena said in a statement
in Spanish. “Not only so there is no untreated wastewater on Mexican
beaches, but in the United States as well.”
The 120-mile (195 km)-long Tijuana River runs near the coast in Mexico
and crosses into Southern California, where it flows through Navy-owned
land and out to the Pacific.
As Tijuana’s wastewater treatment plants have aged and its population
and industry have boomed, an increasing amount of toxins have made their
way into the river and into San Diego County — since 2018, more than 100
billion gallons of raw sewage laden with industrial chemicals and trash.
The pollution has sickened not only swimmers, surfers and lifeguards but
also schoolchildren, Border Patrol agents and others who do not even go
in the water. Scientists say the sewage is vaporized when it foams up
and enters the air people breathe.
The Navy is reviewing whether to relocate its training site for SEAL
candidates after the Naval Special Warfare Center reported 1,168 cases
of acute gastrointestinal illnesses of its recruits from 2019 to 2023.
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Environmental Protection Agency (EPA) Administrator Lee Zeldin,
center, speaks to media while leaving a press conference Tuesday,
April 22, 2025, in San Diego. (Ana Ramirez/The San Diego
Union-Tribune via AP)
 California beaches near the border
have been closed more often than not over the past four years.
Since 2020 more than $653 million in funds have been allocated to
address the issue, but the crisis has continued largely because of
delays by the Mexican government, Zeldin said. He added that he and
Trump are hopeful that will change under the relatively new
administration of President Claudia Sheinbaum, who took office last
October.
Zeldin said that after meeting with Mexico officials in San Diego
for 90 minutes, he was left with the impression that Sheinbaum and
her environmental secretary want to have a “strong collaborative
relationship.”
“What’s being communicated by the new Mexican president is an
intense desire to fully resolve this situation,” Zeldin said. But he
made clear that he wants Mexico to step up.
“There’s no way that we are going to stand before the people of
California and ask them to have more patience and just bear with all
of us as we go through the next 10 or 20 or 30 years of being stuck
in 12 feet of raw sewage and not getting anywhere,” he said. “So we
are all out of patience.”
Flanked by lawmakers from both parties, Zeldin noted that cleanup
efforts have rare bipartisan support.
Zeldin visited the South Bay International Wastewater Treatment
Plant, which was built with funds from both countries to treat 25
million gallons per day as a secondary plant on the U.S. side.
Mexico is working on several wastewater treatment projects to reduce
the flow and make major upgrades to its existing plants. Bárcena
said the now-repaired San Antonio de los Buenos plant, which went
back to operating at full capacity this month, should make a
difference.
But Zeldin said Mexico must complete a number of other projects,
including installing floodgates to collect trash in Tijuana. Another
one being considered would divert 10 million gallons of sewage away
from the shore.
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Associated Press writer María Verza in Mexico City contributed.
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