Regulations last checked for updates: Jul 31, 2026

Title 40 - Protection of Environment last revised: Aug 31, 2026
All TitlesTitle 40Chapter IPart 142Subpart I - Subpart I—Administrator's Review of State Decisions that Implement Criteria Under Which Filtration Is Required
authority: 42 U.S.C. 300f,300g,300g,300g,300g,300g,300g,300j,300j,and
source: 41 FR 2918, Jan. 20, 1976, unless otherwise noted.
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