Assessment of Drinking Water Quality in Different Small Tea Gardens of Sonitpur District (Assam), India 

By Joydev Dutta,  Mridul Chetia, J.P. Sarmah Baruah and Abani Kumar Misra 


With the apparent exception of water, tea (Camellia Sinensis) is the most widely consumed beverage in the world. Although tea is grown commercially in over 35 countries, world production (about 75%) is largely concentrated in a few countries like India, China, Sri Lanka, Kenya, Indonesia, and Argentina. About 60% of tea production in India is produced in Assam itself. The tea gardens (62 large tea gardens and 207 registered small tea gardens), including Asia’s largest tea garden Monabari located in the district Sonitpur of Assam, is one of the most important features of economy. However the use of pesticides for effective pests control and artificial agrochemicals used for the growth and rate of production has generated a lot of concern relating to public health and environmental pollution like water etc. Polluted water is the cause for the spread of epidemics and chronic diseases in human beings. So assessment and monitoring of the drinking water sources located in the small tea garden areas are utmost necessities. A total of 45 numbers of water samples were collected from different water sources like ring wells, ponds, drains and tubewells of Sonitpur district to study the different water quality parameters like pH, EC, TDS, TH, TA, Ca, Mg, F-, Cl-, PO43-, NO3- and SO42-. Data were subjected to normal distribution analysis (NDA) to find out the distribution pattern of the water quality parameters and correlation analysis was carried out to study the interrelationship between different parameters.  

Key Words: Water quality, Small tea gardens, Agrochemicals, Contamination, Sonitpur district

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