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EPA/OW RIN: 2040-AF48 Publication ID: Fall 2017 
Title: Clean Water Act Methods Update Rule for the Analysis of Effluent 

As required under the Clean Water Act section 304(h), the EPA is amending existing regulations to provide regulated entities with more options for measuring pollutants in wastewater. This was a routine action that the Office of Water undertakes every three to five years. This regulatory action amended "Guidelines Establishing Test Procedures for the Analysis of Pollutants" at 40 CFR Part 136 and approved test procedures (analytical methods) for use in testing water for certain constituents. The EPA's regulations require the use of these methods when measurements of waste constituents are required in applications for National Pollutant Discharge Elimination System (NPDES) permits or for reports required under NPDES permits. The regulation also revised, clarified, and corrected errors and ambiguities in existing methods.

Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Completed Actions 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: Deregulatory 
CFR Citation: 40 CFR 136   
Legal Authority: 33 U.S.C. 1311(a)    33 U.S.C. 1314    33 U.S.C. 1361   
Legal Deadline:  None
Action Date FR Cite
NPRM  02/19/2015  80 FR 8955   
NPRM Comment Period Extended  04/20/2015  80 FR 21691   
Final Rule  08/28/2017  82 FR 40836   
Final Rule Effective  09/27/2017 
Additional Information: Docket #:EPA-HQ-OW-2014-0797
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, Local, State, Tribal 
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:
Adrian Hanley
Environmental Protection Agency
Office of Water
Mail Code 4303T, 1200 Pennsylvania Avenue NW,
Washington, DC 20460
Phone:202 564-1564