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Regulations last checked for updates: Apr 18, 2026
Title 40 - Protection of Environment last revised: Aug 18, 2026
All Titles
Title 40
Chapter I
Part 141
Subpart Q - Subpart Q—Public Notification of Drinking Water Violations
§ 141.201 - General public notification requirements.
§ 141.202 - Tier 1 Public Notice—Form, manner, and frequency of notice.
§ 141.203 - Tier 2 Public Notice—Form, manner, and frequency of notice.
§ 141.204 - Tier 3 Public Notice—Form, manner, and frequency of notice.
§ 141.205 - Content of the public notice.
§ 141.206 - Notice to new billing units or new customers.
§ 141.207 - Special notice of the availability of unregulated contaminant monitoring results.
§ 141.208 - Special notice for exceedance of the SMCL for fluoride.
§ 141.209 - Special notice for nitrate exceedances above MCL by non-community water systems (NCWS), where granted permission by the primacy agency under § 141.11(d).
§ 141.210 - Notice by primacy agency on behalf of the public water system.
§ 141.211 - Special notice for repeated failure to conduct monitoring of the source water for Cryptosporidium and for failure to determine bin classification or mean Cryptosporidium level.
Appendix Appendix A - Appendix A to Subpart Q of Part 141—NPDWR Violations and Other Situations Requiring Public Notice 1
Appendix Appendix B - Appendix B to Subpart Q of Part 141—Standard Health Effects Language for Public Notification
Appendix Appendix C - Appendix C to Subpart Q of Part 141—List of Acronyms Used in Public Notification Regulation
authority:
42 U.S.C. 300f
,
300g
,
300g
,
300g
,
300g
,
300g
,
300g
,
300j
,
300j
,
and
source:
40 FR 59570, Dec. 24, 1975, unless otherwise noted.
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