Abstract
The present study has been carried out to assess the quality of groundwater resources of Ernakulam district, Kerala, India. Sample was collected from five target areas which includes Edathala, Nedumbassery, Perumbvoor, Eloor and Paravur points in Ernakulam district and analysed for pH, TDS, Alkalinity, Total Dissolved Solids, Total hardness, Dissolved Oxygen, chlorides, iron and presence of coliforms (based on MPN index) as well. On analysing the MPN of coliform levels, it was found that all the samples except S4 were contaminated by coliform bacteria and is not suitable for drinking purpose. Well water sample taken from Perumbavoor was highly contaminated with coliform content of 2400 CFU/mL. The well waters exhibited TDS (average values from 19-181 mg/L), total hardness (6.2-87 mg/L), alkalinity (2.5 -80 mg/L), pH (5.1-7.2), turbidity (0.1 -7.5 NTU), chloride (8-31 mg/L), dissolved oxygen (6.67 – 8.27) and total iron as Fe (0.08-0.72 mg/L). The total iron content and turbidity from sample S5 exceeded the maximum permissible limits and all other parameters were within the acceptable limit of drinking purposes.
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