Page | 12 ISSN 2277-7067 UGC CARE Group 1 Volume- VIII, Issue 10 (I), 2021-2022 ASSESSMENT OF FLUORIDE AND NITRATE CONTAMINATION PROBLEM IN THE GROUNDWATER OF MANESAR, GURUGRAM, HARYANA, INDIA: A CASE STUDY Priyanka Yadav Amity University, Gurugram, Haryana. Deepika Pandey Amity University, Gurugram, Haryana. Abstract It is impossible to survive without water . Around 80 percent of the world's wastewater is dumped directly in the groundwater which goes back to the environment polluting rivers, lakes, and oceans unsafe drinking water kills more people as compared to any other epidemic.It is said that less than 1 % of earth fresh water is actually assessable to us .In the present study ,the physico – chemical characteristics (Fluoride, Nitrate) of the groundwater of Manesar area of District Gurgaon, Haryana, India were assessed for its consumption for drinking purposes. A total of 30 samples were taken from near about 12 sampling sites all the samples were from borewells, tubewells. Water samples were tested in lab for the following physcio- Chemical parameters like( TDS) Total Dissolved Solids,(EC)( Electrical conductivity, Fluoride, Nitrate. The results were compared with the Standards prescribed by( WHO ) and Bureau of Indian Standards (BIS) . Standard deviation and Standard Error calculation is also being done on the sample concentration of Fluoride and Nitrate . (EC) Electrical conductivity in all samples was found above 400 u/cm and (TDS) value in all samples was found above 500 mg/l. Fluoride concentration found in few village samples of Manesar area is found to be above 1.5 mg/l (limit prescribed by WHO . Where as some of the other villages like have fluoride concentration in their groundwater samples with in limit prescribed by WHO (1.5mg/l) . Nitrate concentration found in the ground water samples some of the village found to be above (45 mg/l) (limit prescribed by WHO ) where as in groundwater samples of few village samples were found to be having nitrate concentration between 40 to 45 mg/l (limit prescribed by WHO) . It is advised to community to use ground water only after properly treating it to avoid getting affected by Diseases caused by the contamination of Drinking water. Introduction Ground water contamination commonly occurs when man made products like gasoline, oil, road salts among other harmful wastes makes their way into the groundwater making it unsafe for drinking purpose. In general the two major contributors of groundwater containments are industrial activities and landfill sites. When the contaminants from these mentioned activities reaches aquifer recharge zones it gets mixed up with groundwater thus making unfit for human use. Studies haves shown that when the contaminant water with Fluorides and Nitrates is consumed for a longer duration it affects human health. Some of the common disease like Fluorosis, Arsenicosis and methemoglobinemia occurs with the excess of consumption of Fluoride, Nitrate and Arsenic present in the ground water. Fluoride contamination is common all around the world. Some of the main sources of fluoride in ground water are from Fluorapatie, a common mineral,, by-products from oil refining, steel manufacturing and brick