Assessment of physicochemical characteristics of groundwater collected from different taluks, Dindigul district, Tamilnadu, India

Abstract

To evaluate the physicochemical characteristics, water samples were collected from thirty-three villages at Dindiguldistrict. From the analysis, pH of the all samples were varying from 6.64 to 8.17. The pH values are within thepermissible limit. In Natham taluk, bore wells samples showed extreme (991, 963 and 951 mg $L^{-1}$) total dissolved solids(TDS) values when compared to maximum permissible TDS is 600 mg $L^{-1}$. The taste of water comes under poor TDSrating. The highest total hardness (TH) 725 mg $L^{-1}$ was tested at Silukuvarpatti bore well in Nilakottai taluk. Residualfree Chlorine and Iron were not detected in any of the samples. All samples showed Nitrate ($NO_{3^-}$ ) concentrations wereranged from 0 to 25 mg $L^{-1}$. The values are less than $NO_{3^-}$ desirable limit, that is 45 mg $L^{-1}$ respectively. Maximum numberof samples showed chloride ($Cl^$) values were higher than $Cl^$ permissible limit (1000 mg $L^{-1}$) as referenced by BIS. Thehighest $Cl^$ values were obtained at 2950 and 2000 mg $L^{-1}$ in Pudukkottai well and Sengulam bore well taken fromReddiyarchatiram and Natham taluks. In regards to fluoride $F^{-1}$) contamination, thirty-four samples showed < 0.5 ppm$F^{-1}$ and rest of fourteen samples viewed