Regulations last checked for updates: May 01, 2025

Title 40 - Protection of Environment last revised: Nov 01, 2025
All TitlesTitle 40Chapter IPart 146Subpart D - Subpart D—Criteria and Standards Applicable to Class III Wells
View all text of Subpart D [§ 146.31 - § 146.34]
§ 146.31 - Applicability.

This subpart establishes criteria and standards for underground injection control programs to regulate Class III wells.

authority: Safe Drinking Water Act, 42 U.S.C. 300f
source: 45 FR 42500, June 24, 1980, unless otherwise noted.
cite as: 40 CFR 146.31
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