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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Methods 1622/1623/1623.1 Cryptosporidium and Giardia Report Form

This slide examination report form is applicable to Method 1622: Cryptosporidium in Water by Filtration/IMS/FA and to Method 1623/1623.1: Cryptosporidium and Giardia in Water by Filtration/IMS/FA.

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