Concept of Development of Water Quality Laboratory
The Department of Water Resources, RD &GR (DoWR, RD&GR), Ministry of Jal Shakti follows a three-tier laboratory
system for analysis of river, lakes, ponds, tanks and ground water. The three-tier laboratory system consists
of number of parameters defined for each level of laboratory.
1.1 Level-I Laboratories
Level-I laboratories can analyse six water quality parameters (five physical parameters - pH, Temperature, Colour, Odour, Electrical Conductivity and
one chemical Parameter-Dissolved Oxygen) of surface as well as ground water.
1.2 Level-II Laboratories
These are the laboratories where in 25 physico-chemical and bacteriological parameters comprising of pH, Temperature, Electrical Conductivity,
Dissolved Oxygen, Carbonate, Bicarbonate, Chloride, Fluoride, Sulphate, Nitrate (N), Nitrite (N), Silica, Iron, Phosphate, Sodium, Potassium,
Boron, Calcium, Magnesium, Total Dissolved Solids, Bio-chemical Oxygen Demand, Chemical Oxygen Demand, Total Coliform, Faecal Coliform and Turbidity.
1.3 Level-III Laboratories
These are the laboratories where in 41 parameters including heavy metals / toxic parameters and pesticides of river water are monitored and analysed.
The parameters mentioned in Level II are supplemented by Ammonia (N), Zinc, Lead, Chromium, Mercury, Cadmium, Nickel, Arsenic, BHC (α, β, γ), DDT (OP, PP),
Alpha Endosulphan, Aldrin, Dieldrin, Carbamate, Malathion Methyl Parathion respectively.