CFR›Title 40›Chapter I›Part 463›Subject Group General Provisions ContainsSections 463.1–463.3CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Sections 463.1 § 463.1 Applicability. 463.2 § 463.2 General definitions. 463.3 § 463.3 Monitoring and reporting requirements. Previous C Subpart C—Finishing Water Subcategory