N.H. Code Admin. R. Env-Dw 704.02
The MCLs and MCLGs for health-related regulated IOC contaminants shall be as listed in Table 704-1, below:
Table 704-1: IOC MCLs and MCLGs
IOC Contaminant | MCL (mg/L unless otherwise specified) | MCLG (mg/L unless otherwise specified) |
Antimony | 0.006 | 0.006 |
Arsenic through June 30, 2021 | 0.010 | Zero |
Arsenic as of July 1, 2021 | 0.0050 | Zero |
Asbestos | 7 million fibers/L (longer than 10 µm) | 7 million fibers/L (longer than 10 µm) |
Barium | 2 | 2 |
Beryllium | 0.004 | 0.004 |
Cadmium | 0.005 | 0.005 |
Chromium | 0.1 | 0.1 |
Copper | See Env-Dw 704.03 | 1.3 |
Cyanide (as free Cyanide) | 0.2 | 0.2 |
Fluoride (also see Env-Dw706) | 4.0 | 4.0 |
Lead | See Env-Dw 704.03 | Zero |
Mercury | 0.002 | 0.002 |
Nitrate (as N) | 10 | 10 |
Nitrite (as N) | 1 | 1 |
Total Nitrate + Nitrite | 10 | 10 |
Selenium | 0.05 | 0.05 |
Thallium | 0.002 | 0.0005 |
N.H. Code Admin. R. Env-Dw 704.02
(See Revision Note #1 at chapter heading for Env-Dw 700) #9699, eff 5-1-10