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. Safe Drinking Water Act

Perchlorate Regulatory Determination Fact Sheets

Return to Perchlorate Home Page

Fact sheets have been developed for the perchlorate regulatory determination corresponding to the following stages published in the Federal Register:
  • Final regulatory determination,
  • Supplemental request for comments, and
  • Preliminary regulatory determination.
  • Fact Sheet: Final Regulatory Determination for Perchlorate (pdf) (35.53 KB, February, 2011, EPA-815-F-11-003)
  • Fact Sheet: Perchlorate Supplemental Request for Comments (pdf) (24.96 KB, August, 2009, EPA-815-F-09-004)
  • Fact Sheet: Preliminary Regulatory Determination for Perchlorate (pdf) (36.17 KB, October, 2008, EPA-815-F-08-009)

Safe Drinking Water Act

  • Overview of the Law
  • Regulations Under Development
  • Developing Regulations
Contact Us About the Safe Drinking Water Act
Contact Us About the Safe Drinking Water Act to ask a question, provide feedback, or report a problem.
Last updated on March 21, 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.