PART 141—NATIONAL PRIMARY DRINKING WATER REGULATIONS
Editorial Note:
Nomenclature changes to part 141 appear at 69 FR 18803, Apr. 9, 2004.
Note:
For community water systems serving 75,000 or more persons, monitoring must begin 1 year following promulgation and the effective date of the MCL is 2 years following promulgation. For community water systems serving 10,000 to 75,000 persons, monitoring must begin within 3 years from the date of promulgation and the effective date of the MCL is 4 years from the date of promulgation. Effective immediately, systems that plan to make significant modifications to their treatment processes for the purpose of complying with the TTHM MCL are required to seek and obtain State approval of their treatment modification plans. This note affects §§ 141.2, 141.6, 141.12, 141.24 and 141.30. For additional information see 44 FR 68641, Nov. 29, 1979.
Subparts
-
A
Subpart A—General Sections 141.1–141.6 -
B
Subpart B—Maximum Contaminant Levels Sections 141.11–141.13 -
C
Subpart C—Monitoring and Analytical Requirements Sections 141.21–141.29; Appendix A -
D
Subpart D—Reporting and Recordkeeping Sections 141.31–141.35 -
E
Subpart E—Special Regulations, Including Monitoring Sections 141.40–141.42 -
F
Subpart F—Maximum Contaminant Level Goals and Maximum Residual Disinfectant Level Goals Sections 141.50–141.55 -
G
Subpart G—National Primary Drinking Water Regulations: Maximum Contaminant Levels and Maximum Residual Disinfectant Levels Sections 141.60–141.66 -
H
Subpart H—Filtration and Disinfection Sections 141.70–141.76 -
I
Subpart I—Control of Lead and Copper Sections 141.80–141.93 -
J
Subpart J—Use of Non-Centralized Treatment Devices Sections 141.100–141.101 -
K
Subpart K—Treatment Techniques Sections 141.110–141.111 -
L
Subpart L—Disinfectant Residuals, Disinfection Byproducts, and Disinfection Byproduct Precursors Sections 141.130–141.135 -
M-N
Subparts M-N [Reserved] -
O
Subpart O—Consumer Confidence Reports Sections 141.151–141.156; Appendix A -
P
Subpart P—Enhanced Filtration and Disinfection—Systems Serving 10,000 or More People Sections 141.170–141.175 -
Q
Subpart Q—Public Notification of Drinking Water Violations Sections 141.201–141.211; Appendices A–C -
R
Subpart R [Reserved] -
S
Subpart S—Ground Water Rule Sections 141.400–141.405 -
T
Subpart T—Enhanced Filtration and Disinfection—Systems Serving Fewer Than 10,000 People Subject groups Additional Watershed Control Requirements for Unfiltered Systems–Reporting and Recordkeeping Requirements -
U
Subpart U—Initial Distribution System Evaluations Sections 141.600–141.605 -
V
Subpart V—Stage 2 Disinfection Byproducts Requirements Sections 141.620–141.629 -
W
Subpart W—Enhanced Treatment for <em>Cryptosporidium</em> Subject groups Disinfection Profiling and Benchmarking Requirements–Treatment Technique Requirements -
X
Subpart X—Aircraft Drinking Water Rule Sections 141.800–141.810 -
Y
Subpart Y—Revised Total Coliform Rule Sections 141.851–141.861 -
Z
Subpart Z—Control of Per- and Polyfluoroalkyl Substances (PFAS) Sections 141.900–141.905