Code of Federal Regulations > Title 40 > Chapter I > Part 257 > Subpart D > Appendix Appendix I - Appendix I to Part 257—Maximum Contaminant Levels (MCLs)

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Regulations last checked for updates: Jun 25, 2026

Title 40 - Protection of Environment last revised: Aug 25, 2026

All TitlesTitle 40Chapter IPart 257Subpart DAppendix Appendix I - Appendix I to Part 257—Maximum Contaminant Levels (MCLs)

Collapse to view onlyAppendix Appendix I - Appendix I to Part 257—Maximum Contaminant Levels (MCLs)

Table of Contents

source: 44 FR 53460, Sept. 13, 1979, unless otherwise noted.

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