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  1. Home
  2. Hazardous Air Pollutants: Ethylene Oxide

Memphis, Tennessee (Sterilization Services of Tennessee)

Sterilization Services of Tennessee is located at 2396 Florida Street, Memphis, TN. The facility uses ethylene oxide (EtO) to sterilize medical equipment and materials.

NOTE: On March 14, 2024, EPA announced final amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Ethylene Oxide Commercial Sterilizers. This rule is one of the most important measures EPA is taking to reduce emissions of ethylene oxide and will significantly reduce lifetime cancer risks for people living near commercial sterilization facilities. It will reduce EtO emissions from commercial sterilization facilities to the outdoor air by 90 percent and, once implemented, will reduce the lifetime cancer risk for people living near all commercial sterilization facilities to levels below the Clean Air Act threshold for elevated risk. No individual will be exposed to EtO at levels that correspond to a lifetime cancer risk of greater than 100-in-1 million, and the number of people with a potential risk of greater than or equal to 1-in-1 million will be reduced by approximately 92 percent.

Learn more

The risk information on this page, and the corresponding map from July 2022, are no longer current. EPA is archiving these maps and pages.

EPA scientists and analysts recently completed a risk assessment to understand the impact of EtO emissions from the Sterilization Services of Tennessee facility. As part of this risk assessment, we used the most recent available information about how much EtO the company emits into the air and we modeled estimated cancer risks to people living nearby. The risk assessment identified elevated cancer risk in the Memphis community. EPA is committed to working with state and local agencies, facilities, and communities to reduce this risk.

Sterilization Services of Tennessee

This map shows EPA’s estimate of lifetime cancer risks from breathing ethylene oxide near Sterilization Services of TN, 2396 Florida St, Memphis, TN. Estimated cancer risk decreases with distance from the facility. Nearest the facility the estimated lifetime cancer risk is 2000 in a million. This drops to 100 in a million and extends south to a point 500’ of Peebles Rd; 100’ north of E Essex Rd; 100’ east of Riverport Rd; and 200’ east of Sth Willington St. Porter-Leath Early Childhood Academy is 1 mile NE

This map shows EPA’s estimates of lifetime cancer risks from EtO near Sterilization Services of Tennessee in Memphis, TN. As you can see from the map risk decreases with distance from the facility. 

The area in blue shows estimated lifetime cancer risks of 100 in a million or greater from breathing air containing EtO emitted from the facility (or the same as 1 additional cancer case in 10,000 people). A lifetime cancer risk of 100 in a million means that, if 1 million people were exposed to this level of EtO in the air 24 hours a day for 70 years, 100 people would be expected to develop cancer from that exposure.  

The area in dark blue on the map shows that EtO exposure could contribute to a maximum increased risk level of 20 cancer cases if 10,000 people were exposed for 70 years (or 2,000 in 1 million). EPA cannot predict whether an individual person will develop cancer.

View a larger version of the map and legend in a new browser tab.

For this risk assessment, we looked at excess cancer risk attributable to a single chemical, EtO. This estimated risk is in addition to the risk of developing cancer from other causes. This is a worst-case scenario that assumes a person stays in the highest risk area 24 hours a day continuously for 70 years. EPA takes this approach because we want to be protective of the most exposed and most vulnerable individuals from risk associated with EtO emissions from this facility.

  • Read additional information on EtO, including information on our current understanding of risks from ethylene oxide.

Community Details

This community is in West Tennessee in Shelby County. Sterilization Services of Tennessee began operation in 1976 and has approximately eight employees. It is a contract sterilizer of medical equipment. There has been no recent installation of controls and no current plans for new controls at this time. 

What EPA is Doing to Address Ethylene Oxide

Now: EPA is working with the Shelby County Health Department and the state of Tennessee to reduce emissions at Sterilization Services of Tennessee. EPA has provided technical support to our air agency partners as part of this work. The Agency is reviewing controls on regulated equipment and processes that emit EtO to determine whether additional air pollution controls are needed. This review includes examining new developments in practices, processes and control technologies, considering cost and feasibility, as well as addressing any previously unregulated emission points.

On April 5th, the EPA published the final rule to strengthen standards for Commercial Sterilizers that use ethylene oxide (EtO), which apply to more than 80 sterilizers around the country. This rule will reduce EtO emissions by over 90 percent nationwide, reducing cancer risk in dozens of communities. The new rule includes tighter emission standards for stack emissions, establish standards to control fugitive emissions, requirements for continuous emissions monitoring systems, and enhanced monitoring and reporting requirements.  EPA will provide technical support to SCHD as they begin implementing the new Commercial Sterilizers rule. More information is available on the EPA’s website. A Frequently Asked Questions document and a fact sheet explaining the final rule are also available on this website.

  • Learn more about regulation for EtO Sterilization Facilities.  
  • More information about actions you can take
  • View the Ethylene Oxide Emissions Information for Residents October 2022 Fact Sheet (pdf) (886.94 KB)

Contact EPA Region 4 at Region4EtO@epa.gov or 1-800-241-1754.

Community Meetings

Two community meetings (one in the morning and one in the evening) were held on October 18, 2022 at Monumental Baptist Church at 704 S Parkway, East Memphis, TN 38106. 

Morning Session, 11:15 a.m. CT: View the recorded morning session here. 

Evening Session, 7:15 p.m. CT: View the recorded evening session here. 

View the slide presentation from both meetings:  Ethylene Oxide and Risk in the Community of Memphis Tennessee Slide Presentation (pdf) (3.37 MB) .

English form

Hazardous Air Pollutants: Ethylene Oxide

  • EPA Actions To Reduce Risk
  • Ethylene Oxide (EtO) Explained
    • Our Current Understanding
    • EtO Risk and Your Health
    • Addressing and Learning About EtO
  • EtO Community Engagement
  • Federal Partnerships on EtO
  • EtO Additional Questions
Contact Us About Ethylene Oxide
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 25, 2025
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