Methods Update Rule - 2021

Rule Summary
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revised EPA methods;
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new or revised methods published by voluntary consensus standard bodies, such as ASTM International and the Standard Methods Committee;
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new and updated methods developed by the U.S. Geological Survey;
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methods reviewed under the Alternate Test Procedures (ATP) program; and
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minor changes to quality assurance and quality control within individual methods.
Final Rule
- Federal Register Notice (May 19, 2021)
- Fact Sheet
You can view the submitted public comments at regulations gov. The Docket Number is EPA-HQ-OW-2018-0826.
Background Information
Additional Information
For further information on the proposed rule, please contact Meghan Hessenauer (hessenauer.meghan@epa.gov) or 202-566-1040.