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 This website is no longer updated and links to external websites and some internal pages may not work.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

How to Search for Tolerances for Pesticide Ingredients in the Code of Federal Regulations

Tolerances are published in the:

You can find tolerances for pesticide chemicals in the:

How to Conduct an eCFR Search

  1. For crop tolerances, use the preferred terms in the Food and Feed Commodity Vocabulary
  2. Go to the e-Code of Federal Regulations (eCFR).
  3. On the left sidebar, select "Simple Search."
  4. On the "simple search" page:
    • Under “Order results by," select CFR Citation.
    • Enter "40" in the “Title Number” box.
    • Leave the "within" box as the default "Full Text."
    • Enter the pesticide ingredient or crop preferred term in the "search for" box.
    • Click on the "submit search" button.
The results returned from the e-CFR will include:
  • Part 180, Subpart C references that contain the specific tolerances.
    • Select the item: "name of the pesticide"; tolerances for residues

For a list of pesticides that have tolerances or exemption from the requirements of an tolerance, see 40 CFR Part 180: Tolerances and exemptions from tolerances for pesticide chemicals in food.

More Help for Finding Tolerances

We have created indexes to 40 CFR Part 180 tolerances to help you more easily find tolerance information for:

See Indexes to Part 180 Tolerance Information for Pesticide Chemicals in Food and Feed Commodities.

(Note that the eCFR is not an official legal version of the Code of Federal Regulations, but is updated by the Office of the Federal Register on a daily basis to reflect documents published in the Federal Register.)

Top of Page