‘Sewer Gas’ Likely Responsible for Colorado Dairy Farm Tragedy

On August 20, 2025, six people were found to have lost their lives on a Colorado dairy farm, and now, it has been reported that the deaths were likely the result of exposure to a dangerous gas, commonly known as “sewer gas.”

A Tragedy Takes Place on a Colorado Dairy Farm

The victims were working at Prospect Valley Dairy in Keenesburg, Colorado, and their bodies were discovered on the farm on August 20, 2025.

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The victims have been identified as Alejandro Espinoza Cruz, 17-year-old Oscar Espinoza Leos, 29-year-old Carlos Espinoza Prado, 36-year-old Jorge Sanchez Pena, 40-year-old Ricardo Gomez Galvan, and 40-year-old Montañez Casañas.

Colorado Tragedy Linked to Deadly “Sewer Gas”

On Thursday, October 30, 2025, it was reported that autopsy results have shown that the cause of death of the six victims was likely exposure to hydrogen sulfide, commonly known as “sewer gas.”

While colorless, hydrogen sulfide has a strong smell that resembles that of rotten eggs, and short-term, high-level exposure can lead to collapse, the inability to breathe, and death.

The deadly properties of the gas are said to mimic those of hydrogen cyanide, and the gas is commonly found in places where biological matter decomposes, such as swamps and sewers.

Unfortunately, it appears that all six victims of the tragedy at the dairy farm were exposed to the gas in a confined space, and emergency crews were dispatched to the farm at roughly 6 p.m. on August 20.

According to the Associated Press, after examining the autopsy reports, the incident has been described as "an industrial accident in a confined space at a dairy farm," and it’s believed that hydrogen sulfide gas was likely the cause of death for all six victims.

[PEOPLE]