• MD. Ameena Begum
• J. Ratnakar

The hydrogeochemical regulating variables for the high rate of groundwater defilement in a semi-arid region's shallow hard rock aquifer have been collected. In the 2018 year, a total of forty groundwater samples were tested throughout the pre-and post-monsoon seasons. The south-western, northern, and central regions of the region show a spatial dispersion of nitrate values. In terms of NO3-, approximately 53 percent and 68 percent of groundwater samples surpassed the 45 mg/l acceptable limit. High fluoride readings were found in areas of the region's north-eastern, north-western, south-eastern, and south-western regions. Fluoride concentrations have been found in the research area, with between 50 and 60 percent of the water samples exceeding the acceptable 1.5 mg/l level in drinking water requirements. The piper trilinear revealed that the primary groundwater types were Na-Ca-Cl and mixed Ca-Mg-Cl. The majority of the area is rock dominant filed, according to Gibb's plot. The study region's water chemistry is dominated by weathering of feldspar minerals and cation exchange reactions, according to statistical analysis. Groundwater chemistry is influenced by weathering of silicate group minerals and cation exchange processes, according to factor analysis. In addition, the Hazard Quotient (HQ) and Total Hazard Index (THI) for nitrate and fluoride for adults and children were determined. In both children and adults, the hazard quotients for fluoride and nitrate groundwater samples above the allowed limit for the non-carcinogenic danger of 1.0, indicating that children are at a higher risk than adults.

Spatial distribution, Piper, Gibb’s plot and Hazard quotient

"EVALUATION OF GROUNDWATER QUALITY AND PROBABILISTIC HEALTH RISKS FROM NITRATE & FLUORIDE CONTAMINATION IN WATERSHED REGION, TELANGANA STATE, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 4, page no.d433-d451, April-2022, Available :http://www.jetir.org/papers/JETIR2204358.pdf

"EVALUATION OF GROUNDWATER QUALITY AND PROBABILISTIC HEALTH RISKS FROM NITRATE & FLUORIDE CONTAMINATION IN WATERSHED REGION, TELANGANA STATE, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 4, page no. ppd433-d451, April-2022, Available at : http://www.jetir.org/papers/JETIR2204358.pdf