25-A Project Report on Spatial Hydrochemical Characterization of Groundwater in Mewat.

Abstract

The present study was aimed at spatial hydro-chemical characterization of the quality of water resource degradation in Mewat district, Haryana. A total of 13 samples were collected in the month of March, 2016 from canal, open wells, handpumps and borewells situated in Chokha, Lahbas, Ghagas, Ulhetha, Naseerbad, Jhirkhola, Kotla, Palla, Tauru. The samples were analysed for Electrical Conductivity (EC), pH, Sodium (Na), Potassium (I(÷), Calcium (Ca"), Magnesium (Mg"), Bicarbonate (HCO3- Sulphate (S042-), Nitrate (NO3-),Chloride (Cr), Iron (Fe), Zinc (Zn), Manganese (Mn) and Copper (Cu). The results indicated variations in physico-chemical parameters as EC (759— 32300 µS/cm) average value 6394.91, pH (7.3 — 8.4) average value 7.8, Hardness (813.8-26156.32 mg/I) average value 5609.21, Na+(30-4850 mg/l) average value 887.91, K+ (6.2-50.6 mg/l) average value 13.8, Ca2+ (107- 3980 mg/1) average value 789.83, Mg2+ (94.22-395.3 mg/1) average value 886.5, S042- (194- 645 mg/I) average value 341.66, NO3- (0.5- 48.8 mg/l) average value 11.6, CI (199.98- 8397.4 mg/1) average value 2040.83, Fe(164.4-727.1 mg/1) average value 417.08, Zn (8.32- 425.5 µg/l) average value 51.8, Cu (0.7-51.51 µg/l) average value 8.50 and Mn (0.19-89.68 p.g/1) average value 14.97. The results have been compared with the drinking water standard prescribed by Bureau of Indian Standard (BIS) and has been found out the values of EC, Na+, K+, Ca', Mg", 5042-, NO3, F, Fe in most of the samples are above permissible and desirable limits. On the basis of water quality parameters analysed, the water quality is found good in the foot hills of Aravalli hills with higher ground gradients but it is problematic in low lying areas. A strong correlation of EC with Na+, ce, Mg+, Cr indicated that these parameters are the cause of salinity in the area. However, a detailed investigation is required to ascertain the cause of the salinity and its remediation.