An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Accessing Laboratory Support

Accessing Laboratory Support is an interactive guide which shows how to access lab support at the local, state, regional and federal levels. It includes examples of when this help may be needed and provides tips and other references. This resource also supplies a one-page summary sheet that lists the key information for finding support. Water utilities, laboratories, first responders and others may find this tool useful.

Please contact us at if you have questions or need assistance accessing these documents.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.