| 1. Physical Requirements |
| Serial No. |
Characteristics |
Maximum Desirable Level |
Maximum Permissible Level |
|
1 |
Colour |
5 Units |
30 Units |
|
2 |
Odour |
Unobjectionable |
Unobjectionable |
| |
|
3 |
Taste |
Unobjectionable |
Unobjectionable |
|
4 |
Turbidity |
2 Jackson Turbidity Units |
8 Jackson Turbidity Units |
|
| |
| 2. Chemical Requirements (Basic) |
Serial No. |
Substance or
Characteristics |
Maximum Desirable Level |
Maximum Permissible Level |
|
1 |
pH range |
7.0 to 8.5 |
6.5 to 9.0 |
|
2 |
Electrical conductivity |
750 μs/cm |
3500 μs/cm |
|
3 |
Chloride (as Cl) |
200 mg/l |
1200 mg/l |
|
4 |
Free residual chlorine (as Cl2) |
|
0.2 mg/l |
|
5 |
Alkalinity (total as CaCO3) |
200 mg/l |
400 mg/l |
|
6 |
Free Ammonia |
|
0.06 mg/l |
|
7 |
Albuminoid Ammonia |
|
0.15 mg/l |
|
8 |
Nitrate (as N) |
|
10 mg/l |
|
9 |
Nitrite (as N) |
|
0.01mg/l |
|
10 |
Fluoride (as F) |
0.6 mg/l |
1.5 mg/l |
|
11 |
Total phosphates (as PO4) |
|
2.0 mg/l |
|
12 |
Total residue |
500 mg/l |
2000 mg/l |
|
13 |
Total hardness (as CaCO3) |
250 mg/l |
600 mg/l |
|
14 |
Total Iron (as Fe) |
0.3 mg/l |
1.0 mg/l |
|
15 |
Sulphate (as SO4) |
200 mg/l |
400 mg/l |
|
Quality Standards