Özet:

The Mulbagal taluk has been chosen for ongoing research and large-scale groundwater extraction meets the requirements for domestic and irrigation water. The region is one of the worst drought-hit areas in Karnataka, where demand for groundwater has increased in recent years due to demographic pressures, urban sprawl, declining rainfall and a lack of permanent rivers. Therefore, this study was directed to evaluate the appropriateness of domestic groundwater by validating water quality standards. The authors have taken51 groundwater samples were collected in the field area, including pH, electrical conductivity (EC), total dissolved solids (TDS), carbonates (CO3), bicarbonates (HCO3), chlorides (Cl), sulfates (SO4), nitrate (NO3), calcium (Ca), magnesium (Mg), sodium (Na), potassium (K) and total hardness (TH). The obtained values ​​are used to characterize the suitability of groundwater quality for drinking purposes, and these values ​​correlate with the WHO (2011) and BIS (2012) criteria. The Piper line graph confirms that most of the sample is of the NaCl type. The TDS classification  indicates about ¾ of samples are fresh water and 1/4 is brackish water. The valuation of groundwater quality is made using the WQI, and it is found that the water in some locations are unsuitable for drinking purposes.

Anahtar Kelimeler: