Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Chemicals and Toxics
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Pesticides
    • Radon
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Guidance
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • EPA Administrator
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History
    • Staff Directory
Superfund
Contact Us

Dioxin at Superfund Sites

Related Dioxin Links
  • Site Evaluation
  • Risk Assessment
  • Cleanup Levels
  • Remedy Selection
  • Cleanup Decision Process

These dioxin pages provide information supporting the development of cleanup plans for dioxin at Superfund sites. 

Dioxins are a group of compounds that share distinct chemical structures and characteristics. The term dioxin commonly refers to the compound in this group considered most toxic, 2,3,7,8-tetrachlorodibenzo-para-dioxin (TCDD). Dioxin-like is a description used for compounds that have chemical structures, physico-chemical properties, and toxic responses similar to TCDD. Dioxin-like compounds (DLCs), including polychlorinated dibenzo p dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (PCBs), are typically found in mixtures with TCDD at Superfund sites. For this website, two terms are used; either TCDD for the 2,3,7,8-tetrachlorodibenzo-para-dioxin compound, or the term dioxin for TCDD plus DLCs, i.e. dioxins, furans, and dioxin-like PCB compounds.

Additional dioxin information can be found at the EPA's dioxin web area:

  • Dioxin
  • Superfund Home
  • Learn About Superfund
  • Community Involvement
  • Cleanup Support
  • Accomplishments & Benefits
  • Cleaning up Sites
  • Contaminants at Superfund Sites
    • Asbestos
    • Dioxin
      • Risk Assessment for Dioxin at Superfund Sites
    • Lead
    • Radiation
    • Soil Bioavailability
  • Contaminated Media at Superfund Sites
  • Superfund Task Force
  • Policy, Reports & Other Documents
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 30, 2023
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.