Acceptable limits for drinking water
Color
Hazen units, Maximum, 5.
Odour
Agreeable.
pH value
6.5 to 8.5.
Taste
Agreeable.
Turbidity - NTU
Maximum 1.
Total dissolved solids - mg/l
500.
Ammonia (as total ammonia-N)
0.5 mg/l.
Barium - mg/l
Maximum 0.7.
Calcium - mg/l
Maximum 75.
Chloride - mg/l
Maximum 250.
Copper - mg/l
Maximum 0.05.
Fluoride - mg/l
Maximum 1.
Free residual chlorine - mg/l
Min 0.2.
Iron - mg/l
Maximum 0.3.
Magnesium - mg/l
Maximum 30.
Manganese - mg/l
Maximum 0.1.
Selenium (as Se) - mg/l
Maximum 0.01.
Silver - mg/l
Maximum 0.1.
Sulphate - mg/l
Maximum 200.
Sulphide - mg/l
Maximum 0.05.
Total alkalinity as calcium
200.
Total hardness (as CaCO3)
200.
Zinc - mg/l
Maximum 5.
BOD is Nil.
Aluminium - mg/l
Maximum, 0.03
Color
Hazen units, Maximum, 5.
Odour
Agreeable.
pH value
6.5 to 8.5.
Taste
Agreeable.
Turbidity - NTU
Maximum 1.
Total dissolved solids - mg/l
500.
Ammonia (as total ammonia-N)
0.5 mg/l.
Barium - mg/l
Maximum 0.7.
Calcium - mg/l
Maximum 75.
Chloride - mg/l
Maximum 250.
Copper - mg/l
Maximum 0.05.
Fluoride - mg/l
Maximum 1.
Free residual chlorine - mg/l
Min 0.2.
Iron - mg/l
Maximum 0.3.
Magnesium - mg/l
Maximum 30.
Manganese - mg/l
Maximum 0.1.
Selenium (as Se) - mg/l
Maximum 0.01.
Silver - mg/l
Maximum 0.1.
Sulphate - mg/l
Maximum 200.
Sulphide - mg/l
Maximum 0.05.
Total alkalinity as calcium
200.
Total hardness (as CaCO3)
200.
Zinc - mg/l
Maximum 5.
BOD is Nil.
Aluminium - mg/l
Maximum, 0.03
