What is the passing rate of tap water to be qualified?

Tap water refers to the water treatment plant through the tap water purification, disinfection and production of water that meets the appropriate standards for people's living, production and use of water. The domestic water is mainly drawn from rivers, lakes and groundwater through the water pumping station of the water plant, surface water, by the water plant in accordance with the "national health standards related to drinking water", after precipitation, disinfection, filtration and other processes, and finally through the distribution pumping station to the various users. 2013 January 15 onwards, you can log on to the website of the Beijing Municipal Water Supply Group to query the last quarter of the water quality of the water supply information, including The 42 regular indicators of water quality, the maximum and minimum values of the quarterly test results, and comparisons with national standards.

Color Degree No more than 15 degrees

Turbidity NTU No more than 3 degrees

Smell and Taste No peculiar smells or odors

Visible to the naked eye No substances

PH 6.5-8.5

Total hardness (as CaCO3) mg/L 450

Iron mg/L 0.3

Manganese mg/L 0.1

Copper mg/L 1.0

Zinc mg/L 1.0

Volatile Phenols (as Phenol) mg/L 0.002

Anionic Synthetic Detergents mg/L 0.3

Sulfate mg/L 250

Chloride mg/L 250

Soluble Total solids mg/L 1000

Fluoride mg/L 1.0

Cyanide mg/L 0.05

Arsenic ug/L 50

Selenium ug/L 10

Mercury ug/L 1

Cadmium ug/L 10

Crromium (Hexavalent Chromium) mg/L 0.05

Lead ug/L 50

Silver ug/L 50