Section Env-Dw 706.01 - Regulated Secondary Contaminants SMCLs(a) This part shall apply to contaminants in drinking water at concentrations that primarily affect aesthetic qualities relating to the public acceptance of drinking water, known as secondary contaminants. At considerably higher concentrations of secondary contaminants, health implications may also exist.(b) Subject to (c), below, the SMCLs for community water systems and non-transient non-community water systems shall be as stated in Table 706-1, below: Table 706-1: Secondary Maximum Contaminant Levels
Contaminant | SMCL |
Aluminum | 0.05 - 0.2 mg/L |
Chloride | 250 mg/L |
Color | 15 color units |
Copper | 1.0 mg/L |
Corrosivity | Non-corrosive |
Fluoride | 2.0 mg/L |
Foaming Agents | 0.5 mg/L |
Iron | 0.3 mg/L |
Manganese | 0.05 mg/L |
Methyl tertiary-butyl ether (MtBE) | 0.020 mg/L |
Odor | 3 threshold odor number |
pH | 6.5 - 8.5 |
Silver | 0.1 mg/L |
Sodium | 250 mg/L |
Sulfate | 250 mg/L |
Sulfide | 0.05 mg/L |
Total Dissolved Solids (TDS) | 500 mg/L |
Zinc | 5 mg/L |
(c) For aluminum, the SMCL based on color considerations shall be 0.05 mg/L and the SMCL based on treatment process considerations shall be 0.2 mg/L.N.H. Code Admin. R. Env-Dw 706.01
(See Revision Note #1 at chapter heading for Env-Dw 700) #9699, eff 5-1-10
Amended by Volume XXXVIII Number 50, Filed December 13, 2018, Proposed by #12665, Effective 1/1/2019, Expires 1/1/2029.