Test Parameters
S.No. | Parameter name | Unit | Requirement (Acceptable limit) | Permissible limit in the absence of alternate source |
1 | pH | – | 6.5- 8.5 | No Relaxation |
2 | TDS | Milligram/ Liter | 500 | 2000 |
3 | Turbidity | NTU | 1 | 5 |
4 | Chloride (as Cl) | Milligram/ Liter | 250 | 1000 |
5 | Total Alkalinity (as Calcium Carbonate) | Milligram/ Liter | 200 | 600 |
6 | Total Hardness (As CaCO3) | Milligram/ Liter | 200 | 600 |
7 | Sulphate (as SO4) | Milligram/ Liter | 200 | 400 |
8 | Iron (As Fe)* | Milligram/ Liter | 1 | No Relaxation |
9 | Total Arsenic (As As)* | Milligram/ Liter | 0.01 | No Relaxation |
10 | Fluoride (as F)* | Milligram/ Liter | 1 | 1.5 |
11 | Nitrate (as NO3) | Milligram/ Liter | 45 | No Relaxation |
12 | Total coliform Bacteria | Shall not be detectable in any 100 ml of sample | – | – |
13 | E. coli/ Thermotolerant coliform bacteria | Shall not be detectable in any 100 ml of sample | – | – |
14 | Free residual Chlorine | Milligram/ Liter | 0.2 | 1 |
15 | Colour | Hazen units | 5 | 15 |
16 | Odour | – | Agreeable | Agreeable |