National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A study was carried out to assess the physico-chemical characteristics of ground water with special emphasis on fluoride in parts of Nalgonda district, Telangana State. The water samples were collected from the tube wells located in 82 selected villages in three mandals during pre and post-monsoon seasons. The ground water samples in the study area interpreted as neutral to slightly alkaline in reaction, non-saline in nature. The mean values of fluoride present in the ground water samples of Ramannapet, Narkatpalli and Aatmakoor mandals were 2.08, 2.88 and 2.45 mg L-1, respectively in pre-monsoon and 1.71, 2.28 and 1.72 mg L-1, respectively in post monsoon season. As per drinking water standards, 83% (68 samples) and 58.5% (48 samples) of the groundwater samples in pre and post monsoon seasons, respectively and have F content greater than that of permissible limit of 1.50 mg L-1. The chloride (Cl-), sulphate (SO4-2) and borate (B) concentrations of all the water samples in both pre and post monsoon seasons were below the permissible limits for irrigation as well as drinking purposes. No water sample tested in the present investigation had more than desirable limits of sodium (Na), calcium (Ca), magnesium (Mg), carbonate (CO3-2), bicarbonate (HCO3-), sodium adsorption ratio (SAR) and residual sodium carbonate (RSC) hence, all the water from the studied sources can be safely used for drinking and irrigation purposes. As per the threshold limits of Cu, Mn, Fe, Zn Cd, Cr, Ni, Pb and Co for drinking and irrigation water recommendations, all the samples analyzed during both the seasons fell within the permissible limits.
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