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The environmental impact of ethylene oxide: Beyond health risks

Michael Bartlett

By Michael Bartlett

Posted on December 04th, 2025

EtO not only poses risks to human health but can also potentially cause damage to the environment. Each year, chemical manufacturers in the United States produce an estimated 6.4 million pounds of EtO. This colorless and odorless gas serves as a key component in manufacturing other chemicals, especially those used in sterilizing medical equipment.

Because of its ability to alter and damage DNA, the International Agency for Research on Cancer (IARC) classified EtO as a known human carcinogen. Likewise, the Environmental Protection Agency (EPA) included it in the list of Hazardous Air Pollutants under the Clean Air Act.

EtO's environmental impact: The alarming effects you need to know

Multiple scientific studies have pointed out how EtO is toxic to all living things and that exposure to high levels can lead to significant harm. When released into the air, EtO that persists in the outdoor air may cause health issues to land animals that live near facilities using and handling this chemical. In fact, the EPA plans to conduct further studies to determine more concrete links between EtO exposure and endangerment of species and their habitat.

Additionally, exposure to high concentrations of EtO may not only result in the death of animals, birds, or fish but also the death or low growth rate of plants. A 2014 study from the Asian Journal of Biological Sciences reported that tissues of fruits exposed to EtO concentrations over 2% or subjected to 2-3 days of extended exposure became irreparably damaged. Furthermore, researchers reported that these EtO-exposed fruits did not resume ripening after being removed from the EtO-contaminated atmosphere. Real-life implications could mean that important crops and fruits exposed to elevated levels of EtO can adversely affect the agricultural sector.

As a volatile organic compound, experts believe EtO may also contribute to the ground level of ozone. In turn, it damages crops as well as releases more greenhouse gas, the biggest contributor to climate change.

Transporting and storing EtO also carries the risks of accidental spills into water or onto land. Though it is less likely to remain in water or soil, scientists warned that it could lead to immediate disastrous effects. This includes deaths of aquatic life.

Populations most vulnerable to EtO exposure

To prevent or minimize the harm it brings, stringent regulations have been implemented in the production and distribution of EtO. However, certain groups continue to face elevated risks of developing serious diseases linked to constant exposure to EtO. Generally, they include the following:

  • Industrial employees in factories, plants, and facilities handling, using, and producing EtO.
  • Residents living near establishments that manufacture and use EtO.
  • Children residing in communities located close to EtO-producing facilities.

Some of the health concerns tied to long-term exposure to EtO include serious and chronic diseases such as:

Individuals diagnosed with any of these illnesses and who have a history of EtO exposure must seek legal help today. They may be eligible for compensation that can greatly help their recovery and treatment.

Let ELG Law support you in filing your EtO exposure claim

To secure the compensation you and your loved ones deserve, you need to file toxic exposure claims. If you need help in getting started, then you have come to the right place. With over 35 years of experience, ELG Law has provided legal support to countless individuals in their toxic exposure claims. These include dozens of industrial workers and residents exposed to the cancer-causing EtO.

Our skilled and compassionate team of experts understands how legal implications can be complicated. That's why we have dedicated our efforts to streamlining and simplifying the processes for you. We can evaluate your case at no cost. All you have to do is share your medical, employment (for industrial employees) records, or proof of residence (for residents living near EtO-using facilities).