New signs in the Tijuana River Valley are warning the public to avoid areas where toxic gases have been detected because of sewage pollution.

On Wednesday, County Supervisor Paloma Aguirre and San Diego Mayor Todd Gloria unveiled one of the signs. It’s posted along the Tijuana River on Saturn Boulevard, near Sunset Avenue. The other sign is on Dairy Mart Road.

“We want to make sure that our recreationists, our visitors, our ranchers, our farmers, who come or live or work in the river valley are well aware of the potential for exposure to the hydrogen sulfide gases,” said Aguirre.

The signs suggest that “adults, children and animals” avoid the immediate area and any contact with the river water. If someone experiences symptoms and they persist or worsen, “seek medical care.”

Officials s

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