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US law
Federal (United States)
Regulations
Title 40 CFR — Protection of Environment
Chapter I — ENVIRONMENTAL PROTECTION AGENCY
Part 131 — WATER QUALITY STANDARDS
Federal (United States) · Regulations
Part 131 — WATER QUALITY STANDARDS
31 sections
4 groups
Subpart A — General Provisions
8 sections
Subpart B — Establishment of Water Quality Standards
6 sections
Subpart C — Procedures for Review and Revision of Water Quality Standards
3 sections
Subpart D — Federally Promulgated Water Quality Standards
14 sections
Part 131 — WATER QUALITY STANDARDS | Federal (United States) Regulations | Justis AI