Abstract

The study of the water quality of to daraisingh tehsil of tonk district, rajasthan india has carried out to assess the risk to human health. A comparative study has also been done in the premonsoon and postmonsoon periods considering the change in various parameters and concentraton of differentions. It has been found that the concentration of ions in premonsoon period is higher than postmonsoon which is natural phenomenon. This study is main consideration to assess the quality of water for its best utilization like drinking. For this purpose the study area has been divides into five zones. Only two sample sites named hamirpura (s-5) and lamba khurd (s-7) are found fit for in all studied water quality parameters on comparision with standards. These two villages are located in north zone of tehsil. Contamination of ground water with fluoride is due to the naturally fluoride rich rock salt system. Hence almost all the area is fluorosis prone.