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Title 40

Displaying title 40, up to date as of 9/23/2021. Title 40 was last amended 9/23/2021.
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Title 40 Protection of Environment Part / Section
Chapter I Environmental Protection Agency 1 – 1099
Subchapter D Water Programs 100 – 149
Parts 100-103 [Reserved]
Part 104 Public Hearings on Effluent Standards for Toxic Pollutants 104.1 – 104.16
Part 105 Recognition Awards Under the Clean Water Act 105.1 – 105.16
Part 108 Employee Protection Hearings 108.1 – 108.7
Part 109 Criteria for State, Local and Regional Oil Removal Contingency Plans 109.1 – 109.6
Part 110 Discharge of Oil 110.1 – 110.6
Part 112 Oil Pollution Prevention 112.1 – 112.21
Part 113 Liability Limits for Small Onshore Storage Facilities 113.1 – 113.6
Part 116 Designation of Hazardous Substances 116.1 – 116.4
Part 117 Determination of Reportable Quantities for Hazardous Substances 117.1 – 117.23
Part 120 Definition of Waters of the United States 120.1 – 120.2
Part 121 State Certification of Activities Requiring a Federal License or Permit 121.1 – 121.16
Part 122 EPA Administered Permit Programs: the National Pollutant Discharge Elimination System 122.1 – 122.64
Part 123 State Program Requirements 123.1 – 123.64
Part 124 Procedures for Decisionmaking 124.1 – 124.214
Part 125 Criteria and Standards for the National Pollutant Discharge Elimination System 125.1 – 125.139
Part 127 NPDES Electronic Reporting 127.1 – 127.27
Part 129 Toxic Pollutant Effluent Standards 129.1 – 129.105
Part 130 Water Quality Planning and Management 130.0 – 130.16
Part 131 Water Quality Standards 131.1 – 131.47
Part 132 Water Quality Guidance for the Great Lakes System 132.1 – 132.6
Part 133 Secondary Treatment Regulation 133.100 – 133.105
Part 135 Prior Notice of Citizen Suits 135.1 – 135.13
Part 136 Guidelines Establishing Test Procedures for the Analysis of Pollutants 136.1 – 136.7
Part 140 Marine Sanitation Device Standard 140.1 – 140.5
Part 141 National Primary Drinking Water Regulations 141.1 – 141.861
Part 142 National Primary Drinking Water Regulations Implementation 142.1 – 142.313
Part 143 Other Safe Drinking Water Act Regulations 143.1 – 143.20
Part 144 Underground Injection Control Program 144.1 – 144.89
Part 145 State UIC Program Requirements 145.1 – 145.58
Part 146 Underground Injection Control Program: Criteria and Standards 146.1 – 146.95
Part 147 State, Tribal, and EPA-Administered Underground Injection Control Programs 147.1 – 147.3400
Part 148 Hazardous Waste Injection Restrictions 148.1 – 148.24
Part 149 Sole Source Aquifers 149.1 – 149.111