Comparative Study of Water Quality Assessment of Kanke Dam and Dhurwa Dam in Ranchi, Jharkhand, India

The present work deals with the Comparative study of Water Quality Assessment of two water body’s sample collected from three sites of the Kanke Dam and the Dhurwa Dam in Ranchi. The drinking water supply to the major population of Ranchi depends on the Kanke Dam. It is therefore essential to monitor the water Quality at regular intervals of time. Water samples from the various parts of the dams were collected and analysis was carried out on the parameters such as pH, Conductivity, Total Dissolved Solids (TDS), Total Alkalinity, Total Hardness, Calcium, Magnesium, Chloride, Dissolved oxygen and Biological Oxygen Demand. The ranges of various parameters of water of both areas under-studied obtained were pH (7.19–7.45), Conductivity (114.8- 441.5 µs/cm), Total Dissolved Solids (67.42–265.2 mg/L), Total Alkalinity (44–147 mg/L), Total Hardness (64.8–145 mg/L), Calcium (7.85–52.8 mg/L), Magnesium (3.72–11.70 mg/L), Chloride (6.97–54.90 mg/L) and DO (3-8.40 mg/L) and BOD (2.10–2.80 mg/L). The study reveals that some analytical aspects are higher than the prescribed limit by the WHO and BIS standard. The Methodology for water quality assessment is taken from BIS standard method for the various parameters. Some of the sampling sites of the dams can be categorized as hyper eutrophic that indicates the water at that site is unfit for domestic use. The outer skirt of the dam is shrunk considerably due to the aggressive rapid urbanization process and uncontrollable encroachment. We need to spread awareness among people in order maintain these water body free from pollution.