An investigation to determine the quality of underground irrigation waters of Barwala Block of
Hisar District in Haryana was undertaken. On the basis of EC, SAR and RSC values of the waters
54.2, 11.7, 13.3, 10.1, 5.3, 2.4 and 1.2% in saline, high SAR saline, marginally saline, good, high
alkali, alkali and marginally alkali classes, respectively. The data also revealed that 66.9% waters
had EC values above 4 dS/m and 22.1% had EC values above 10 dS/m.The waters are sodiummagnesium- calcium type dominated by chloride. Another interesting feature of these waters is the predominance of magnesium over calcium. Carbonate is either absent or is very little and the concentration of bicarbonates ions did not vary much in all the ranges.