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
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Ingredients Used in Pesticide Products

Endocrine Disruptor Screening Program Tier 1 Assessments

The EPA has released its reviews of the Tier 1 screening assay results for the first 52 pesticide chemicals (active and inert ingredients) in the Endocrine Disruptor Screening Program. This is an important step in a multi-step process to protect public health and the environment by ensuring that exposure to chemicals do not result in adverse effects that can occur from the disruption of hormones. The Tier 1 screening data are the best way to determine whether a chemical has the potential to interact with the endocrine system and requires more thorough testing.

For each chemical, EPA decides whether additional (Tier 2) testing is necessary. These decisions are based on weighing whether the evidence from the assay results, as well as other scientifically relevant data, showing more potential for endocrine bioactivity outweighs the evidence that it does not.

View Tier 1 Screening results and associated data evaluation records (DERs) for 52 Tier 1 chemicals.

Learn more about EDSP’s Tier 1 screening process.

Find status of EDSP orders and data call-in notices

Learn more about chemicals being screened under EDSP.


Contacts

  • Regulatory questions: David Jones (jones.rdavid@epa.gov), Senior Regulatory Adviser, Pesticide Re-Evaluation Division, or at (703) 305-6725
  • Ecological effects: Amy Blankinship (Blankinship.amy@epa.gov), Senior Scientist, Environmental Fate and Effects Division, or at (703) 347-8062
  • Health effects: Gregory Akerman (akerman.gregory@epa.gov), Senior Biologist, Health Effects Division, or at (703) 305-0116

Ingredients Used in Pesticide Products

  • Basic Information About Pesticide Ingredients
  • Pesticide Groups
  • Pesticide Product Information System
  • About Biopesticides
Contact Us about Ingredients Used in Pesticide Products
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 24, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
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
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

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

Follow.