EPA has finalized specific changes to analytical test procedures that are used by industries and municipalities to analyze the chemical, physical, and biological components of wastewater and other environmental samples that are required by Clean Water Act regulations and their NPDES permit. The changes include revised EPA methods and revised methods published by voluntary consensus standard bodies, such as ASTM International and the Standard Methods Committee. EPA added certain methods reviewed under the Alternate Test Procedures (ATP) program to Code of Federal Regulations (CFR), Title 40 Part 136 and clarifying the procedures for EPA approval of nationwide and limited use ATPs.

New EPA Methods finalized include 608.3, 611, 624.1 and 625.1

  • EPA Method 608.3, Organochlorine Pesticides and PCBs
  • EPA Method 611, Haloethers.
  • EPA Method 624.1, Purgeables by GC/MS.
  • EPA Method 625.1, Base/Neutrals and Acids by GC/MS.

EPA revised existing Methods 1600, 1603, 1680, and 1682. This rule implements changes for EPA microbiological methods 1600, 1603, 1680, and 1682 that correct typographical or other errors that EPA identified in the methods after publication.

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