Revision of National Environment Standards 2010

Ambient Water Quality Criteria 2020 (Additional Parameters)

A
Anionic Detergents: 0.2 mg/l
TDS : 500 mg/l
Calcium hardness : 200 mg/l
Magnesium hardness : 200 mg/l
Barium : 0.7 mg/l
COD : 5mg/l

B
Anionic Detergents: 1 mg/l
TDS : 1500 mg/l

C
Sodium : 26 mg/l
TDS : 2100 mg/l

Note:
A: (Very good)
Drinking water source without conventional treatment, but after disinfection whenever necessary

B: (Good)
Drinking water source with conventional treatment

C: (Moderate)
Used for irrigation, industrial cooling, etc.

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