U.S. Code
Regulations
Constitution
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
x
Search
Search guide
U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 149
Subpart A -
§ 149.1 - Purpose.
§ 149.2 - Definitions.
§ 149.3 - Critical Aquifer Protection Areas.
Download the GovRegs app!