40 CFR, Chapter I-Environmental Protection Agency, Subchapter D-Water Programs
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- Part 104 - Public Hearings on Effluent Standards for Toxic Pollutants
- Part 108 - Employee Protection Hearings
- Part 109 - Criteria for State, Local and Regional Oil Removal Contingency Plans
- Part 110 - Discharge of Oil
- Part 112 - Oil Pollution Prevention
- Part 113 - Liability Limits for Small Onshore Storage Facilities
- Part 116 - Designation of Hazardous Substances
- Part 117 - Determination of Reportable Quantities for Hazardous Substances
- Part 121 - State Certification of Activities Requiring a Federal License or Permit
- Part 122 - EPA Administered Permit Programs: The National Pollutant Discharge Elimination System
- Part 123 - State Program Requirements
- Part 124 - Procedures for Decisionmaking
- Part 125 - Criteria and Standards for the National Pollutant Discharge Elimination System
- Part 129 - Toxic Pollutant Effluent Standards
- Part 130 - Water Quality Planning and Management
- Part 131 - Water Quality Standards
- Part 132 - Water Quality Guidance for the Great Lakes System
- Part 133 - Secondary Treatment Regulation
- Part 135 - Prior Notice of Citizen Suits
- Part 136 - Guidelines Establishing Test Procedures for the Analysis of Pollutants
- Part 140 - Marine Sanitation Device Standard
- Part 141 - National Primary Drinking Water Regulations
- Part 142 - National Primary Drinking Water Regulations Implementation
- Part 143 - National Secondary Drinking Water Regulations
- Part 144 - Underground Injection Control Program
- Part 145 - State UIC Program Requirements
- Part 146 - Underground Injection Control Program: Criteria and Standards
- Part 147 - State Underground Injection Control Programs
- Part 148 - Hazardous Waste Injection Restrictions
- Part 149 - Sole Source Aquifers
