Total coliform(MPN / 100ml or CFU / 100ml)

No detection

Thermotolerant coliform (MPN / 100ml or CFU / 100ml)

Escherichia coli (MPN / 100ml or CFU / 100ml)

Total number of colonies (CFU / ml)

100

Arsenic (mg / L)

0.01

Cadmium (mg / L)

0.005

Chromium (hexavalent, mg / L)

0.05

Lead (mg / L)

0.01

Mercury (mg / L)

0.001

Selenium (mg / L)

0.01

Cyanide (mg / L)

0.05

Fluoride (mg / L)

1.0

Nitrate (in N, mg / L)

10 ；The limit of groundwater source is 20

Chloroform (mg / L)

0.06

Carbon tetrachloride (mg / L)

0.002

Bromate (when ozone is used, mg / L)

0.01

Formaldehyde (when ozone is used, mg / L)

0.9

Chlorite (when chlorine dioxide is used for disinfection, mg / L)

0.7

Chlorate (mg / L when compound chlorine dioxide is used for disinfection)

0.7

Chroma (platinum cobalt chroma unit)

15

Turbidity (NTU scattering turbidity unit)

1；The limit of water source and purification technology is 3

Smell and smell

No abnormal odor or peculiar smell

Visible to the naked eye

nothing

PH (pH unit)

Not less than 6.5 and not more than 8.5

Aluminum (mg / L)

0.2

Iron (mg / L)

0.3

Manganese (mg / L)

0.1

Copper (mg / L)

1.0

Zinc (mg / L)

1.0

Chloride (mg / L)

250

Sulfate (mg / L)

250

Total dissolved solids (mg / L)

1000

Total hardness (based on CaCO3, mg / L)

450

Oxygen consumption (CODMn method, based on O2, mg / L)

3；When the oxygen consumption of raw water is more than 6mg / L, it is 5

Volatile phenols (based on phenol, mg / L)

0.002

Anionic synthetic detergent (mg / L)

0.3

Antimony (mg / L)

0.005

Barium (mg / L)

0.7

Beryllium (mg / L)

0.002

Boron (mg / L)

0.5

Molybdenum (mg / L)

0.07

Nickel (mg / L)

0.02

Silver (mg / L)

0.05

Thallium (mg / L)

0.0001

Ammonia nitrogen (in N, mg / L)

0.5

Sulfide (mg / L)

0.02

Sodium (mg / L)

200

Petroleum (total, mg / L)

0.3

Nitrite (mg / L)

1

Total organic carbon (TOC, mg / L)

5