Recent Updates

November 13, 2018

Statement From Sterigenics Regarding Illinois General Assembly Hearings

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October 30, 2018

Sterigenics Response to IL Attorney General Lawsuit

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October 29, 2018

Sterigenics Responds to Hinsdale Village President; Reaffirms Commitment to Safety and Collaboration

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October 26, 2018

Sterigenics Releases Statement in Connection With Illinois House Environmental Committee Meeting 

Sterigenics reiterates the critical role of its Willowbrook Facility in protecting the public health while adhering to strict regulations and safe operations. Read more


October 18, 2018

Sterigenics Willowbrook Releases Final Air Quality Results to US EPA and IL EPA

The final reports for the compliance emission control tests that were recently completed at Willowbrook reconfirm that that Ethylene Oxide (EO) emission levels are well below permitted levels and also below detection limits.

Click here for summary of final report.

Click here to access the final Willowbrook I report.

Click here to access the final Willowbrook II report.


October 5, 2018

AdvaMed and iBIO Issue Joint Letter To Illinois Attorney General 

AdvaMed and iBIO express concern over disruption to EO sterilization at Sterigenics Willowbrook and impact on patients and healthcare industry. Read more


October 4, 2018

Ethylene Oxide Sterilization Association (EOSA) Letter to Illinois Attorney General

 EOSA expresses urgent and grave concerns over recent developments. Read more


October 2, 2018

Statement From Sterigenics In Response To Illinois EPA Referral To Attorney General

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September 27, 2018

USEPA Letter To Governor Rauner Regarding Sterigenics Willowbrook

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Sterigenics Announces Willowbrook Air Quality Test Results

Independent testing shows all tests conducted registered emission levels below detection limits on state-of-the-art approved testing equipment. Read more

Sterigenics issues letter in response to ILEPA request regarding Sterigenics Willowbrook test results.



September 25, 2018

American Chemistry Council Calls For Correction To The 2014 National Air Toxics Assessment

American Chemistry Council (ACC) cites flawed science, calls for correction to the 2014 NATA (National Air Toxics Assessment) and other reports that rely on the Ethylene Oxide IRIS Assessment. Read more


September 21, 2018

Update on Sterigenics Willowbrook Testing

Sterigenics completed a two-day test to confirm EO emission reductions achieved by recent voluntary equipment upgrade at the Willowbrook, Illinois facilities. Click here to read more .


September 18, 2018

Ethylene Oxide Sterilization Association, Inc. (EOSA) issues statement

The Ethylene Oxide Sterilization Association, Inc. (EOSA) issues Statement on IRIS Assessment and recent Federal Reports on EO Emissions. Click here to read the statement.


September 13, 2018

Initial review of the ATSDR report

The ATSDR report is a technical report on recent Ethylene Oxide (EO) emissions monitoring for a two-day period in May 2018 in the Willowbrook, IL area.  Click here for more.


Sterigenics’ formal response to Village of Willowbrook letter August 31, 2018

On September 3, 2018, Sterigenics issued a formal response letter to the Village of Willowbrook's letter received August 31, 2018. Click here to read the response letter.