• Babu Nallusamy
• Syed Hamim Jeelani
• Bharathkumar, L
• L. Mallama
• Sharath Raj B

Groundwater quality is a major concern in hydrogeology which needs to be addressed. Raichur district is situated in north-eastern part of Karnataka state. It falls in the northern part of Karnataka state between the two major rivers namely the Krishna and the Tungabhadra. The study area is Lingasugur Taluk. The aim of the research is to analyse the geospatial distribution of water quality and to assess the quality level in terms of water quality index. The pH values were found to be higher concentration in water samples of Santhekallur, Kuppigudda, Sarjapur, Hesarur, Chilkaragi village. The highest alkalinity value 875mg/L was recorded for the water sample in Sarjapur, whereas the lowest at Kasbalingasugur as 125 mg/L. The Geochemical study of water samples were carried out that was collected from 20 stations from insitu sample collection. Almost 80% area is highly affected by fluoride concentration at Hangasadoddi, Santhekallur, Guddenhalli, Kuppigudda, Sarjapur and Halapur villages with a range of 3 ppm. The geology of the area is predominantly intruded by orbicular granite and hornblende biotite granite gneiss. Water quality of the villages represented higher concentrations of alkalinity, hardness, chloride, salinity and fluoride were strongly recommended for industrial or agricultural purposes. According to WQI standard, the water samples from the study area were found not suitable for potable drinking. This contamination is well marked in geospatial map which will be very helpful in decision making processes.

Water Quality Index, fluoride contamination, Lingasugur

"Geospatial Distribution of Ground Water and Water Quality Index of Lingasugur Taluka, Raichur District, Karnataka: An Emphasis on Fluoride Contamination.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.496-511, May-2019, Available :http://www.jetir.org/papers/JETIR1905M79.pdf

"Geospatial Distribution of Ground Water and Water Quality Index of Lingasugur Taluka, Raichur District, Karnataka: An Emphasis on Fluoride Contamination.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp496-511, May-2019, Available at : http://www.jetir.org/papers/JETIR1905M79.pdf