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Quality standards for domestic drinking water

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  • Release Time：2022-02-17 16:45
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【Summary】Quality standards for domestic drinking water

Quality standards for domestic drinking water

【Summary】Quality standards for domestic drinking water

  • Categroy：News
  • Author:
  • Origin:
  • Release Time：2022-02-17 16:45
  • Views：
Information

Quality standards for domestic drinking water

Project standard

Sensory properties and general chemical index chroma shall not exceed 15 degrees, and shall not present other abnormal colors

Turbidity is not more than 3 degrees, in special cases, not more than 5 degrees

Odor and taste shall not have abnormal odor or peculiar smell

Not visible to the naked eye

PH 6.5 ~ 8.5

Total hardness (in calcium carbonate) 450 mg/L

Iron 0.3 mg/L

Manganese 0.1 mg/L

Copper 1.0 mg/L

Zinc 1.0 mg/L

Volatile phenols (phenol) 0.002 mg/L

Anionic synthetic detergent 0.3mg /L

Sulfate 250 mg/L

Chloride 250 mg/L

Solubility of total solids 1000 mg/L

Toxicological index Fluoride 1.0 mg/L

Cyanide 0.05 mg/L

Arsenic is 0.05 mg/L

Selenium 0.01 mg/L

Mercury (0.001 mg/L

Cadmium 0.01 mg/L

Chromium (hexavalent) 0.05 mg/L

Lead 0.05 mg/L

Silver 0.05 mg/L

Nitrate (in nitrogen) 20 mg/L

Chloroform * 60 ug/L

Carbon tetrachloride * 3 ug/L

Benzo (a) pyrene 0.01ug /L

DDT * 1 ug/L

Six six six * 5 ug/L

Bacteriological indicators the total number of bacteria was 100 /mL

Total coliform 3 /L

Free residual chlorine should not be less than 0.3mg/L after 30min contact with water. Except the factory water of centralized water supply meets the above requirements, the water at the end of the pipe network should not be less than 0.05mg/L

Radioactivity index total α radioactivity 0.1bq /L

Total beta radioactivity 1 Bq/L

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