Regulations last checked for updates: Nov 22, 2024

Title 40 - Protection of Environment last revised: Nov 20, 2024
  • Subpart C - Subpart C [Reserved]
  • Subpart E - Subpart E—Criteria for Granting Economic Variances From Best Available Technology Economically Achievable Under Section 301(c) of the Act [Reserved]
  • Subpart F - Subpart F—Criteria for Granting Water Quality Related Variances Under Section 301(g) of the Act [Reserved]
  • Subpart K - Subpart K [Reserved]
  • Subpart L - Subpart L—Criteria and Standards for Imposing Conditions for the Disposal of Sewage Sludge Under Section 405 of the Act [Reserved]
authority: The Clean Water Act, 33 U.S.C. 1251
source: 44 FR 32948, June 7, 1979, unless otherwise noted.