Tennessee has two commercial sterilizer facilities that emit ethylene oxide (EtO), Sterilization Services of Tennessee in Memphis and DeRoyal Industries/Royal Sterilization in New Tazewell.

The commonwealth of Puerto Rico bears a disproportionate burden of ethylene oxide (EtO) pollution from commercial sterilizer facilities.

Two commercial sterilizers in New Jersey—EtO Sterilization in Linden, and Steris Isomedix in South Plainfield—are located within the metropolitan New York City area.

All six of Minnesota's commercial sterilizer facilities are located in the metropolitan Minneapolis-St. Paul area.

The two commercial sterilizer facilities in metropolitan Baltimore, located in Hanover and Jessup, stand roughly three miles apart.

Two commercial sterilizer facilities in Atlanta, Georgia—Sterigenics and Sterilization Services of Georgia—are located less than 10 miles apart.

Two commercial sterilizer facilities in the metropolitan Denver, Colorado area—comprise an ethylene oxide (EtO) hotspot, standing roughly five miles apart. A third sterilizer facility is located in nearby Boulder.

Nine commercial sterilizer facilities are located in metropolitan Los Angeles, California, with two hotspots, one in Los Angeles and one in Temecula.

Ethylene oxide poses a largely invisible and unrecognized threat to nearby communities.