U.S. Code of Federal Regulations

Regulations most recently checked for updates: Sep 16, 2025

All TitlesTitle 40Chapter IPart 141Subpart I - Subpart I—Control of Lead and Copper
§ 141.80 - General requirements and action level.
§ 141.81 - Applicability of corrosion control treatment steps to small, medium, and large water systems.
§ 141.82 - Description of corrosion control treatment requirements.
§ 141.83 - Source water treatment requirements.
§ 141.84 - Service line inventory and replacement requirements.
§ 141.85 - Public education and supplemental monitoring and mitigation requirements.
§ 141.86 - Monitoring requirements for lead and copper in tap water.
§ 141.87 - Monitoring requirements for water quality parameters.
§ 141.88 - Monitoring requirements for lead and copper in source water.
§ 141.89 - Analytical methods.
§ 141.90 - Reporting requirements.
§ 141.91 - Recordkeeping requirements.
§ 141.92 - Monitoring for lead in schools and child care facilities.
§ 141.93 - Small water system compliance flexibility.
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