Volume No. 3 Issue No.: 1 Page No.: 169-184 July-Sept 2008

 

EVALUATION OF UNDERGROUND WATER QUALITY OF SURAT CITY (INDIA)

 

Hemangi Desai*, Tasneem Anandwala1 and H. Desai2

1. TIFAC-CORE in Environmental Engineering, Surat, (INDIA)
2. Sarvajanik College of Engineering and Technology, Surat, (INDIA)

 

Received on : March 11, 2008

 

ABSTRACT

 

Ninety-five percent of all fresh water on earth is ground water. Ground water is found in natural rock formations. These formations, called aquifers, are a vital natural resource with many uses. High quality of water is essential to the welfare of humans, aquatic ecosystems and industries. The study of water quality draws information from a variety of disciplines including chemistry, biology, mathematics, physics, engineering and resource management. Because of industrial development, leaking underground storage and sewage tanks and municipal landfills, many local areas have experienced significant ground water contamination, which is cause of special concern. This problem needs attention and protective actions to prevent despoliation of the aquifers, because once contaminated it is difficult to decontaminate an aquifer. Efforts have to be made to use physical and chemical principles to explain the factors controlling the quality of ground waters. The present study describes the quality assessment of underground water in different zones of Surat City of Gujarat State, (India), i.e., central, east, west, north, south, south-west and south-east zones of Surat city. The quality of water was examined by analyzing certain parameters, such as: total dissolved solids, turbidity, pH, conductivity, total hardness, calcium hardness, magnesium hardness, total alkalinity and chemical oxygen demand of collected bore samples. Near residential area, total suspended solid, magnesium hardness, total alkalinity and chemical oxygen demand are found to be higher than the permissible limit. Near bank of the river, total suspended solid, total hardness, total alkalinity, total dissolved solid, magnesium hardness, calcium hardness, chloride, total alkalinity and chemical oxygen demand are found to be higher than the permissible limit. Near industrial area, total suspended solid, total alkalinity, total dissolved solid, chloride, calcium hardness, magnesium hardness, total hardness and chemical oxygen demand are found to be higher than the permissible limit. As Dumas village is situated on the coast of Arabian sea, the value of magnesium hardness, total hardness and total alkalinity are higher than the permissible limit.

 

Keywords : Hardness, COD, Despoliation, Permissible limit.

 

 

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