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Web Standard: Page Not Found (404 Error)

Definition

A page that notifies a visitor they have found a broken link.

Content Requirements

In the WebCMS, there is a single 404 error page. If you have content in the WebCMS, you do not need to create a 404 page.
All EPA web content needs a 404 error page. If you manage a non-www application, you need to create a 404 page.
- All other 404 error pages should include:
  - Page title that shows that a person is on a Page not Found page.
  - A way to find information (for example, a search box).
  - A link back to the homepage in the body of the page.
  - Any additional information that may help the customer.

Example

Here's a 404 page, generated by random.

About this Standard

All EPA public web content must adhere to all federal requirements including; the EPA Web Standards, the U.S. Web Design System guidelines, federal plain language guidelines, and the 21st Century Integrated Digital Experience Act. Internal content, including Intranet and Microsoft 365, may differ from the public content. If not explicitly stated, content must adhere to all federal requirements.

Original effective date: 01/01/2004
Last approved on: 10/10/2024
Web Council review by: 10/10/2027 (or earlier if deemed necessary by the Web Council)