Fifteen ground water samples (S-1 to S-15) were collected from fifteen different hand pumps of Imphal East district during post-monsoon period (November) of 2016. They were analyzed for physico-chemical parameters such as temperature, pH, TDS (total dissolved solids), electrical conductivity (EC), total alkalinity (TA) (and hence CO32- and HCO3-), total hardness (TH), Ca2+, Mg2+, Na+, K+ and Cl-. Ground water (S-3) of Khanarok Awang Leikai (near foothill) was found to be fit for drinking purpose as the values of above mentioned physicochemical parameters for S-3, were below or within the acceptable limits of BIS standard for drinking water as well as that of WHO. But some suitable treatments are necessary in order to keep the values of pH (for S-13), TDS (for S-1), total alkalinity (for S-1, S-2 and S-4 to S-15), total hardness (for S-2 and S-9), Mg2+ (for S-2 and S-9) and Na+ (for S-1 and S-13) within or below the acceptable limits of BIS standard for drinking water as well as that of WHO. However ground waters represented by S-1 to S-2, S-4 to S-12 and S-14 to S-15 may also be used for drinking purpose in absence of alternate sources as their above mentioned physicochemical parameter values are below the corresponding permissible limits of BIS standard for drinking water. All the fifteen ground waters may be used for other domestic purposes. However, except S-13 other remaining fourteen ground waters are suitable and well fit for irrigation purpose.
Na+ shows strong positive correlations with HCO3-(r=0.860) and with TA (r=0.856) showing main attribution of NaHCO3 towards total alkalinity for different ground waters. EC shows strong positive correlations with TDS (r=0.916). Again TDS shows strong positive correlations with Na+, K+, HCO3- and Cl- (r=0.917, 0.605, 0.754 and 0.857 respectively). This, further, indicates that the high values of TDS for different ground waters are due to the presence of high concentrations of NaHCO3, NaCl and KCl mainly. Above all, TH also shows strong positive correlations with Ca2+ and Mg2+.
Cite this article:
Nandababu Singh Laishram. Physicochemical Assessment of Ground Water Qualities of some areas of Imphal East District of Manipur during Post-Monsoon-5th Phase. Asian J. Research Chem. 2017; 10(6):839-844. doi: 10.5958/0974-4150.2017.00140.7