Code of federal regulations

Code of Federal Regulations (CFR)
Document that codifies all rules of the executive departments and agencies of the federal government. It is divided into fifty volumes, known as titles.

Code of Federal Regulations (CFR)The Code of Federal Regulations is a codification of the published rules in the Federal Register by the executive departments and agencies of the federal government.

Code of Federal Regulations, Title 40, Chapter I, Section 141.2.July 1, 1991
Federal Register 56 FR 26547, June 7, 1991 (Lead and Copper) 56 FR 3578, January 30, 1991 (Phase 11) ...

specified at Code of Federal Regulations 141.80(c) which
determines, in some cases, the treatment requirements
contained in subpart I of this part that a water system is ...

National Ambient Air Quality Standards (NAAQS) - Sets the levels of air quality for the United States , in the Code of Federal Regulations (40 CFR ß50.2), to protect the population's health.

See also: Nutrients, Exposure, Standards, Bacteria, Sulfur