About the Code of Federal Regulations
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. It is divided into 50 titles that represent broad areas subject to Federal regulation. The 50 subject matter titles contain one or more individual volumes, which are updated once each calendar year, on a staggered basis. The annual update cycle is as follows: titles 1-16 are revised as of January 1; titles 17-27 are revised as of April 1; titles 28-41 are revised as of July 1; and titles 42-50 are revised as of October 1. Each title is divided into chapters, which usually bear the name of the issuing agency. Each chapter is further subdivided into parts that cover specific regulatory areas. Large parts may be subdivided into subparts. All parts are organized in sections, and most citations to the CFR refer to material at the section level. Read More
Click here to access the e-CFR (Electronic Code of Federal Regulations), the regularly updated online version of the CFR.
- Title 40
Protection of Environment- Chapter I
Environmental Protection Agency- Subchapter D
Water Programs- Part 141
National Primary Drinking Water Regulations - Part 142
National Primary Drinking Water Regulations Implementation - Part 143 Other Safe Drinking Water Act Regulations
- Subpart A National Secondary Drinking Water Regulations
- § 143.1 Purpose.
- § 143.2 Definitions.
§ 143.3 Secondary maximum contaminant levels. - § 143.4 Monitoring
- Subpart B
Use of Lead Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water- § 143.10
Applicability and scope. - § 143.11 Definitions.
- § 143.12 Definition of lead free and calculation methodology.
- § 143.13 Use prohibitions.
- § 143.14 State enforcement of use prohibitions.
- § 143.15 Introduction into commerce prohibitions.
- § 143.16 Exemptions.
- § 143.18 Required labeling of solder and flux that is not lead free.
- § 143.19 Required certification of products.
- § 143.20 Compliance provisions.
- § 143.10
- Subpart A National Secondary Drinking Water Regulations
- Part 141
- Subchapter D
- Chapter I