Site Feedback

Title 40

Displaying title 40, up to date as of 7/17/2026. Title 40 was last amended 7/16/2026.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter DWater Programs100 – 149
Part 147State, Tribal, and EPA-Administered Underground Injection Control Programs147.1 – 147.3400
Subpart AGeneral Provisions147.1 – 147.2
Subpart BAlabama147.50 – 147.60
Subpart CAlaska147.100 – 147.104
Subpart DArizona147.150 – 147.152
Subpart EArkansas147.200 – 147.205
Subpart FCalifornia147.250 – 147.253
Subpart GColorado147.300 – 147.305
Subpart HConnecticut147.350 – 147.359
Subpart IDelaware147.400 – 147.449
Subpart JDistrict of Columbia147.450 – 147.452
Subpart KFlorida147.500 – 147.504
Subpart LGeorgia147.550 – 147.559
Subpart MHawaii147.600 – 147.601
Subpart NIdaho147.650 – 147.652
Subpart OIllinois147.700 – 147.703
Subpart PIndiana147.750 – 147.753
Subpart QIowa147.800 – 147.802
Subpart RKansas147.850 – 147.860
Subpart SKentucky147.900 – 147.905
Subpart TLouisiana147.950 – 147.951
Subpart UMaine147.1000 – 147.1001
Subpart VMaryland147.1050 – 147.1099
Subpart WMassachusetts147.1100 – 147.1101
Subpart XMichigan147.1150 – 147.1155
Subpart YMinnesota147.1200 – 147.1210
Subpart ZMississippi147.1250 – 147.1252
Subpart AAMissouri147.1300 – 147.1303
Subpart BBMontana147.1350 – 147.1355
Subpart CCNebraska147.1400 – 147.1403
Subpart DDNevada147.1450 – 147.1454
Subpart EENew Hampshire147.1500 – 147.1501
Subpart FFNew Jersey147.1550 – 147.1551
Subpart GGNew Mexico147.1600 – 147.1603
Subpart HHNew York147.1650 – 147.1655
Subpart IINorth Carolina147.1700 – 147.1749
Subpart JJNorth Dakota147.1750 – 147.1752
Subpart KKOhio147.1800 – 147.1805
Subpart LLOklahoma147.1850 – 147.1852
Subpart MMOregon147.1900 – 147.1901
Subpart NNPennsylvania147.1950 – 147.1955
Subpart OORhode Island147.2000 – 147.2001
Subpart PPSouth Carolina147.2050 – 147.2051
Subpart QQSouth Dakota147.2100 – 147.2104
Subpart RRTennessee147.2150 – 147.2153
Subpart SSTexas147.2200 – 147.2205
Subpart TTUtah147.2250 – 147.2253
Subpart UUVermont147.2300 – 147.2349
Subpart VVVirginia147.2350 – 147.2352
Subpart WWWashington147.2400 – 147.2404
Subpart XXWest Virginia147.2450 – 147.2499
Subpart YYWisconsin147.2500 – 147.2510
Subpart ZZWyoming147.2550 – 147.2555
Subpart AAAGuam147.2600 – 147.2601
Subpart BBBPuerto Rico147.2650 – 147.2651
Subpart CCCVirgin Islands147.2700 – 147.2701
Subpart DDDAmerican Samoa147.2750 – 147.2752
Subpart EEECommonwealth of the Northern Mariana Islands147.2800 – 147.2802
Subpart FFFTrust Territory of the Pacific Islands147.2850 – 147.2852
Subpart GGGOsage Mineral Reserve—Class II Wells147.2901 – 147.2929
Subpart HHHLands of the Navajo, Ute Mountain Ute, and All Other New Mexico Tribes147.3000 – 147.3016
Subpart IIILands of Certain Oklahoma Indian Tribes147.3100 – 147.3109
Subpart JJJAssiniboine and Sioux Tribes147.3200
Subpart KKK [Reserved]
Subpart LLLNavajo Indian Lands147.3400