Table 6.

Classification of water type and its suitability based on EC and TDS values (N = 72)⁵⁹.

S.N.	Parameter	Measured unit	Classification	Suitability of water	Ground water samples (%)	Source
1	EC	µS cm−1	< 750	Desirable	100	60
			750–1500	Permissible	Nil
			1500–3000	Not permissible	Nil
			> 3000	Hazardous	Nil
2	TDS	mg l−1	< 500	Desirable for drinking	100	61
			500–1000	Permissible for drinking	Nil
			1000–3000	Useful for irrigation	Nil
			> 3000	Not suitable for drinking and irrigation	Nil