Abstract

ENVIRONMENTAL IMPACT OF GROUND WATER QUALITY PARAMETERS IN DINDIGUL DISTRICT, TAMIL NADU, INDIA

P. Pavatharini, R. Umamaheshwari* and S. Krishnamoorthy

ABSTRACT

In this present study, Tannery effluent and four ground water samples were randomly collected from the observation wells and analyzed for various physiochemical constituents by APHA methods. Water samples were collected in sterilized clean high density polythene bottles from Dindigul district. Water sampling areas mentioned as GW1 to GW4 (GW1-Nagal Nagar; GW2- Angu Nagar; GW3- Begampur; GW4- Palani road). The study report shows that pH of Dindigul district ground water is ranges from 6.6 to 8.1. Total dissolved solids and Electrical conductivity were found moderate in GW1 to GW3 but in GW4 is slightly increase the conductivity were recorded maximum. The Calcium, Mg, and Fe were recorded maximum in GW4 site rest of others were permissible limit. Free NH3 was found maximum in GW4 (0.6 mg/L), in tannery effluent water (3.45mg/L). The calcium values were recorded between 220 and 320 mg/l. The magnesium values are recorded between 118 and 135 mg/l for the groundwater samples. Nitrite was observed high in Tannery effluent (1.0mg/L). The value of chloride for all the ground water samples is ranged from 100 - 340 mg/l. Phosphate was found objectable limit in GW 4 (1.4mg/L) and Tannery effluent (1.4mg/L).The fluoride values for all the ground water samples are well exceeding the permissible limit. The sulphate values for the ground water samples are exhibited between 20 and 38 mg/l. Finally, the result was concluded that the Tannery effluent water discharges impact on the ground water quality and makes contaminated at few sampling sites namely GW4 (Palani Road) > GW3 (Begampur) > GW1(Nagal Nagar) > GW2 (Angu Nagar). These ground water samples are not advisable to take as drinking purpose.

Keywords: Tannery effluent, Ground water, Water pollution, Dindigul district.