Although there is not yet enough data to document chronic exposure, readings taken in South County indicate cause for concern ...

Hydrogen sulfide occurs in nature and is also produced and used in different industries. In nature, it occurs naturally in sewers, manure pits, well water, oil and gas wells and volcanoes.

Emissions of hydrogen sulfide raise health concerns in communities near California's largest lake, researchers say. Salton Sea is emitting foul-smelling gas at high levels, study says - Los ...

A sign from the Pemex refinery in Deer Park is photographed the morning after a release of the chemical hydrogen sulfide killed at least two refinery workers and injured a minimum of 35 other ...

Groundlevel hydrogen sulfide concentrations over 0.08 ppm, averaged over a 30-minute period, are prohibited by state law if the emissions affect residential or commercial property.

Two contract workers died during the chemical leak southeast of Houston on Oct. 10, 2024. Another 13 contractors were taken to the hospital to be evaluated for hydrogen sulfide exposure.