Department of Chemistry, Navyug Science College , Surat ,Gujarat India

Email:- gmmalik2010@gmail.com

 Ground water samples were collected from different locations of Surat city, Gujarat (India). Total 54 sampling stations identified from Surat and their physico-chemical parameters were examined and different indices for corrosion based on data interpreted for the purpose of groundwater usage as drinking as well as industrial usage. Physico-chemicals parameters like pH, Colour, Alkalinity, Hardness, Chloride, Silica, Sulfate, TDS, Odour, COD, SS, Iron, Copper, Chromium, Boron, Temperature, Dissolve Oxygen, Phosphate, Ca Hardness, Mg Hardness, Ca as Ca⁺⁺, Mg as Mg⁺⁺ and corrosion indices like Langelier Saturation Index, Ryznar Stability Index, Puckorius Scaling Index and Larson Scold Index were calculated by standard methods. By comparing the results against drinking water quality standards laid by Indian Council of Medical Research (ICMR) and World Health Organization (WHO), it is found that most of the water samples are non-potable for human being due to high concentration of one or the other parameter. Most of the samples have Total Alkalinity, Hardness, Chloride and TDS values much higher than the permissible level stipulated by ICMR and WHO. Even at some places Lenglier Saturation Index value are found higher too. The high values of these parameters may have health implications and therefore these need attention. From different indices it is summarized that many places have corrosion tendency in cooling water so these water should have some pre-treatment before use in cooling water and boiler.