| Jul 1, 2025 |
Sep 30, 2025 |
TTHM |
MCL |
Yes |
No |
.116 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2025 |
Jun 30, 2025 |
TTHM |
MCL |
Yes |
No |
.112 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2025 |
Jun 30, 2025 |
TTHM |
MCL |
Yes |
No |
.112 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 |
Mar 31, 2025 |
TTHM |
MCL |
Yes |
No |
.115 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 |
Mar 31, 2025 |
TTHM |
MCL |
Yes |
No |
.115 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 |
Mar 31, 2025 |
TTHM |
MCL |
Yes |
No |
.115 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 |
Mar 31, 2025 |
TTHM |
MCL |
Yes |
No |
.115 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2025 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Dec 24, 2024 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jan 7, 2025 |
Public Notice Rule and Revised PN Rule |
| Dec 24, 2024 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jan 7, 2025 |
Public Notice Rule and Revised PN Rule |
| Dec 24, 2024 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jan 7, 2025 |
Public Notice Rule and Revised PN Rule |
| Dec 24, 2024 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jan 7, 2025 |
Public Notice Rule and Revised PN Rule |
| Dec 24, 2024 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jan 7, 2025 |
Public Notice Rule and Revised PN Rule |
| Dec 24, 2024 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jan 7, 2025 |
Public Notice Rule and Revised PN Rule |
| Oct 1, 2024 |
Dec 31, 2024 |
TTHM |
MCL |
Yes |
No |
.116 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2024 |
Dec 31, 2024 |
TTHM |
MCL |
Yes |
No |
.116 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.082 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.082 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.101 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.101 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.101 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.111 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 |
Sep 30, 2024 |
TTHM |
MCL |
Yes |
No |
.111 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2024 |
Jun 30, 2024 |
TTHM |
MCL |
Yes |
No |
.116 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2024 |
Jun 30, 2024 |
TTHM |
MCL |
Yes |
No |
.116 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 |
Mar 31, 2024 |
TTHM |
MCL |
Yes |
No |
.118 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 |
Mar 31, 2024 |
TTHM |
MCL |
Yes |
No |
.118 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 |
Mar 31, 2024 |
TTHM |
MCL |
Yes |
No |
.118 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2024 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 |
Dec 31, 2023 |
TTHM |
MCL |
Yes |
No |
.118 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 |
Dec 31, 2023 |
TTHM |
MCL |
Yes |
No |
.118 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 |
Dec 31, 2023 |
TTHM |
MCL |
Yes |
No |
.118 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 5, 2023 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Oct 2, 2023 |
Public Notice Rule and Revised PN Rule |
| Sep 5, 2023 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Oct 2, 2023 |
Public Notice Rule and Revised PN Rule |
| Jul 1, 2023 |
Sep 30, 2023 |
TTHM |
MCL |
Yes |
No |
.117 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2023 |
Sep 30, 2023 |
TTHM |
MCL |
Yes |
No |
.117 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2023 |
Sep 30, 2023 |
TTHM |
MCL |
Yes |
No |
.117 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2023 |
Sep 30, 2023 |
TTHM |
MCL |
Yes |
No |
.117 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 |
Jun 30, 2023 |
TTHM |
MCL |
Yes |
No |
.113 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 |
Jun 30, 2023 |
TTHM |
MCL |
Yes |
No |
.113 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 |
Jun 30, 2023 |
TTHM |
MCL |
Yes |
No |
.113 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 |
Jun 30, 2023 |
TTHM |
MCL |
Yes |
No |
.113 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2023 |
Mar 31, 2023 |
TTHM |
MCL |
Yes |
No |
.11 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2023 |
Mar 31, 2023 |
TTHM |
MCL |
Yes |
No |
.11 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2023 |
Mar 31, 2023 |
TTHM |
MCL |
Yes |
No |
.11 MG/L |
0.080 mg/L |
.08 |
Archived |
Mar 31, 2023 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2022 |
Dec 31, 2022 |
TTHM |
MCL |
Yes |
No |
.103 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2022 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2022 |
Dec 31, 2022 |
TTHM |
MCL |
Yes |
No |
.103 MG/L |
0.080 mg/L |
.08 |
Archived |
Dec 31, 2022 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2022 |
Sep 30, 2022 |
TTHM |
MCL |
Yes |
No |
.101 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2022 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2022 |
Sep 30, 2022 |
TTHM |
MCL |
Yes |
No |
.101 MG/L |
0.080 mg/L |
.08 |
Archived |
Sep 30, 2022 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |
| May 25, 2022 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jun 30, 2022 |
Public Notice Rule and Revised PN Rule |
| May 25, 2022 |
— |
Public Notice |
Other |
No |
No |
— |
— |
— |
Resolved |
Jun 30, 2022 |
Public Notice Rule and Revised PN Rule |
| Apr 1, 2022 |
Jun 30, 2022 |
TTHM |
MCL |
Yes |
No |
.092 MG/L |
0.080 mg/L |
.08 |
Archived |
Jun 30, 2022 |
Stage 2 Disinfectants and Disinfection Byproducts Rule |