R. Sophia Porchelvi^1,, P. Selvavathi²

The present study consisted of the estimation of some physicochemical parameters and quality of ground water from Cauvery delta region, Tamil Nadu (India).The water sample were collected from various parts of Cauvery delta region. Ten parameters (via TDS, turbidity, p^H, Chloride, Calcium, Phosphate, Zinc, Copper, Iron and lead) were selected to assess the ground water quality degree by using fuzzy comprehensive evaluation method. The water samples were grouped into five categories according to Surface Water Quality Standards (as per IS: 2296). Some of the concentrations of P^H, turbidity, phosphate were between the class A and class C with the exemption of the parameters (TDS, chloride, calcium, zinc, copper, iron, lead) which exceeds class C. From the analysis, these exceeding parameters were found to be the main pollutant in the sampling areas and hence the study further revealed that the water is not safe for drinking but suitable for aquatic life and also for irrigation purpose in some extend.

Ground water, Cauvery delta region, physicochemical parameters, fuzzy comprehensive method, water quality