| 1.
Most probably number of organisms (MPN) present per
100 ml of water. This is an indicator of bacterial
contamination.
2. Physical indicators of
contamination: PH, Color, Odor, Turbidity and
Conductivity.
3. Chemical Indicators of
Contamination : (a) Ammonia, (b) Nitrites, and (c)
Nitrates.
4. Fluoride content. This indicates
risk of fluorosis.
5. Total Hardness which includes
Calcium and Magnesium.
6. Confirmatory test for E.Coli
which indicates fecal contamination. This test will be
done only if the MPN value is found unsatisfactory.
7. Interpretation, based on test
results and sample collection record. |