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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 40
Chapter I
Part 141
Subpart S - Subpart S—Ground Water Rule
§ 141.400 - General requirements and applicability.
§ 141.401 - Sanitary surveys for ground water systems.
§ 141.402 - Ground water source microbial monitoring and analytical methods.
§ 141.403 - Treatment technique requirements for ground water systems.
§ 141.404 - Treatment technique violations for ground water systems.
§ 141.405 - Reporting and recordkeeping for ground water systems.
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