Evaluation of Groundwater Quality for Suitability of Irrigation Purposes: A Case Study in the Udham Singh Nagar, Uttarakhand

Table 3

Classification and distribution of water quality based on salinity.

Level	Salinity (µS cm^−1)	Hazards and limitation	Number of samples
C1	<250	Low hazards and no detrimental effects on the plants and no accumulation in soil is expected	No
C2	250–750	Stress can be shown by sensitive plants, and salt accumulation in soil can be prevented due to moderate leaching	43 samples
C3	750–2250	Most plants affected by salinity (salt-tolerant plants are needed), careful irrigation, good drainage, and leaching required	7 samples (KU1, KU2, KU12, KU19, KU20, KU21, and KU42)
C4	>2250	Unsuitable for irrigation except some highly salt-resistant plants, excellent drainage, frequent leaching, and intensive management required	-