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EPA/OW RIN: 2040-AF84 Publication ID: Fall 2020 
Title: Clean Water Act Methods Update Rule for the Analysis of Effluent 

This regulatory action amends "Guidelines Establishing Test Procedures for the Analysis of Pollutants" at 40 CFR part 136 by approving test procedures (analytical methods) for use by testing laboratories and others for water monitoring. EPA regulations require the use of these methods where measurements of waste constituents are required in applications for National Pollutant Discharge Elimination System permits or for reports required under NPDES permits. These methods must be used for measurements required for an application for an EPA or State National Pollutant Discharge Elimination System (NPDES) permit, for reports submitted by NPDES dischargers and for certifications issued by States under section 401 of the Clean Water Act. The regulation also revises, clarifies, and corrects errors and ambiguities in existing methods and the water monitoring regulations.

Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: Not subject to, not significant 
CFR Citation: 40 CFR 136   
Legal Authority: 33 U.S.C. 1311    33 U.S.C. 1314    33 U.S.C. 1361   
Legal Deadline:  None
Action Date FR Cite
NPRM  10/22/2019  84 FR 56590   
Final Rule  11/00/2020 
Additional Information: Docket #:OW-2018-0826
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Meghan Hessenauer
Environmental Protection Agency
Office of Water
Washington, DC 20460
Phone:202 566-1040
Fax:202 566-1053

Brian D'Amico
Environmental Protection Agency
Office of Water
Mail Code 4303T, 1200 Pennsylvania Avenue NW,
Washington, DC 20460
Phone:202 566-1069
Fax:202 566-1053