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.

Emergency

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • 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
    • Staff Directory

Breadcrumb

  1. Home
  2. Vessels, Marinas and Ports

Factsheet for the California No-Discharge Zone Prohibiting Vessel Sewage in all California Marine Waters

This factsheet describes the California no-discharge zone established for all California marine waters, which went into effect in March 2012. It includes background information, frequently asked questions (FAQs) and a map of California no-discharge zones. The factsheet also briefly describes California marine waters, holding tanks, gross tonnage and enforcement.

  • California No-Discharge Zone (NDZ) Final Rule Factsheet (pdf) (319.15 KB, 2012)

Vessels, Marinas and Ports

  • Sewage Discharges
    • Marine Sanitation Devices (MSDs)
    • No-Discharge Zones (NDZs)
  • Commercial Vessel Discharges
  • Recreational Vessel Discharges
  • Military Vessel Discharges
  • Aquatic Nuisance Species
  • Cruise Ship Studies
Contact Us About Vessels, Marinas and Ports
Contact Us About Vessels, Marinas and Ports to ask a question, provide feedback, or report a problem.
Last updated on July 5, 2024
  • Assistance
  • Ayuda
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • Aide
  • Asistans
  • Korean
  • Assistência
  • Russian
  • Tulong
  • 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

Follow.