Table 5.

Classification of groundwater sample for irrigation use on the basic of EC, SAR, RSC, KR, SSP, PI, MH, Na%, T.H [2].

Parameters	Range	Water class	Samples(%)
			2015 Year	2016 Year
EC	< 250	Excellent	Nil	Nil
	250–750	Good	93.3	93.3
	750–2250	Permissible	6.7	6.7
	>2250	Doubtful	Nil	Nil
SAR	0–10	Excellent	100	100
	10–18	Good	Nil	Nil
	18–26	Doubtful	Nil	Nil
	> 26	Unsuitable	Nil	Nil
RSC	< 1.25	Good	100	100
	1.25–2.5	Doubtful	Nil	Nil
	> 2.5	Unsuitable	Nil	Nil
KR	< 1	suitable	100	100
	1–2	Marginal suitable	Nil	Nil
	> 2	Unsuitable	Nil	Nil
SSP	< 50	Good	100	100
	> 50	Unsuitable	Nil	Nil
PI	> 75	Class-I	Nil	Nil
	25–75	Class-II	100	100
	< 25	Class-III	Nil	Nil
MH	< 50	Suitable	100	100
	> 50	Harmful &Unsuitable	Nil	Nil
Na%	< 20	Excellent	100	100
	20–40	Good	Nil	Nil
	40–60	Permissible	Nil	Nil
	60–80	Doubtful	Nil	Nil
	> 80	Unsuitable	Nil	Nil
T.H	< 75	Soft	Nil	Nil
	75–150	Moderately hard	Nil	Nil
	150–300	Hard	86.7	76.7
	> 300	Very hard	13.3	23.3