3. GROUNDWATER QUALITY ASSESSMENT IN SOME VILLAGES OF VADGAM TALUKA OF BANASKANTHA DISTRICT_ GUJARAT_ INDIA_ WITH AN EMPHASIS ON STUDY OF FLUORIDE AND ITS EFFECTS By E.R. AGHARIA
Groundwater quality is a very essential hydrogeochemical investigation. Springs, shallow wells, deep wells and bored tube wells are the main sources of groundwater. The health of people consuming this water is greatly influenced by its quality. Water obtained from different sources is contaminated with a large number of impurities. The present study deals in detail with 15 physico-chemical parameters viz. pH, total dissolved salts, total alkalinity (as CaCO3) conductivity, total hardness (as CaCO3) M.O. alkalinity (as CaCO3), nitrite, nitrate, sulphate, chloride, fluoride, sodium, zinc, magnesium and calcium as well as 3 microbiological parameters such as total bacterial count at 370C, coliform and E. coli tests in four bored tube well samples. Their toxicological and adverse effects, if any, when present beyond the prescribed limits, are also discussed at length. These bored tube well underground waters are obtained from a depth of about 700-800 feet from the surface of the earth in this area having now a scanty rainfall. The daily ingestion of 2 mg fluoride could result in crippling flourosis after 40 years.
The values recommended by Indian Standard Specifications for Drinking Water (IS: 10500: 1993) of Bureau of Indian Standards (BIS), are used for the purpose of comparison of observed values.
KEY WORD: Groundwater, Bored tube wells, Quality, Fluoride, Water pollution.
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