And also Sodium hazard was compared from 1989 to 1996 and 1997. The data were collected from various organisations working in the area, like agricultural department, groundwater department, working in the Patancheru area.
C2S1, which is a good quality water, seven samples were reported during 1989/96, whereas it is absent in 1997.
C3S1, moderate quality water, twenty-two samples were reported in 1989/96, whereas thirteen samples were reported in 1997.
C3S2 classification two samples were there, whereas 1997 three samples were there. Whereas C4S1 also from three it has increased to eight.
C3S2 classification 3 samples have increased to 11.
C4S4, which was absent during 1989/96, there are two samples were falling in this range.
The absence of C2S1 during 1997 indicates the waters are becoming from moderate to bad water quality.