40 CFR (Protection of Environment)



Title 40 of the Code of Federal Regulations (40 CFR), titled Protection of Environment, is a United States federal government regulation. Title 40 comprises 37 volumes.

The Code of Federal Regulations (CFR) annual edition is the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government produced by the Office of the Federal Register (OFR) and the Government Publishing Office.

The CFR or Code of Federal Regulations was originally authorized by President Franklin D. Roosevelt on October 11, 1938, as a means to organize and maintain the growing material published by federal agencies in the newly mandated Federal Register. The first volume of the CFR was published in 1939 with general applicability and legal effect in force on June 1, 1938.  The Office of the Federal Register (OFR) began publishing yearly revisions for some titles in 1963 with legal effective dates of January 1 each year. By 1967 all 50 titles were updated annually.

Additional information


2019, 2020


Complete Set, Parts 1-49, Parts 50-51, Parts 52.01-52.1018, Parts 52.1019-END, Parts 53-59, Parts 60-APPEND, Parts 60.1-END, Parts 61-62, Parts 63.1-63.599, Parts 63.600-63.1199, Parts 63.1200-63.1439, Parts 63.1440-63.6175, Parts 65.6580-63.8830, Parts 63.8980-END, Parts 64-71, Parts 72-80, Parts 81-84, Parts 85-86.1-86.599, Parts 86.600-1-END, Parts 87-99, Parts 100-135, Parts 136-149, Parts 190-259, Parts 260-265, Parts 266-299, Parts 300-399, Parts 400-424, Parts 425-699, Parts 700-789, Parts 790-999, Parts 1000-1059, Parts 1060-END


Print Edition