STUDIES ON WATER QUALITY INDEX OF DRINKING WATER OF
THE LAKHIMPUR DISTRICT, ASSAM
SABITRI SAIKIA KAKATI AND H.P. SARMA
Abstract
Water quality index (WQI) is a useful tool for the quick assessment of any water system. To
evaluate the WQI of Lakhimpur District, water samples from sixteen different locations were
collected spreading over a period of one year from June 06 to May 07. samples were collected in
four seasons. Average of four season observations is used here for evaluation of WQI. The quality
of water was assessed by testing various physico-chemical parameters such as pH, total dissolved
solids (TDS), total hardness (TH), total alkalinity (TA), calcium, magnesium, sodium, potassium,
iron and chloride content. WQI of all samples indicate that water of all the locations is not suitable
for direct consumption and is not within the permissible level. It belongs to the slight pollution
category
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