Appraisal of Groundwater quality in parts of Hoskote and Malur taluks, Karnataka (India) and their suitability for drinking and irrigation purposes

Abstract

Groundwater samples from thirty four bore wells used for drinking and irrigation in parts of Hoskote and Malur taluks, Karnataka State (India), were collected and geochemically analysed during December 2014. The hydrochemical characteristics was dominated by Ca(58.82%) and Ca 2+ -Mg 2+ -HCO3 -(38.24%), with alkaline earth (Ca+Mg) exceeding alkalies (Na+K) and strong acidic anions dominating weak acidic anions. Weathering of rock-forming minerals regulated chemistry of the groundwater in the study area as indicated by Gibbs plot. The groundwater chemistry in the study area is influenced by silicate dissolution of host rock with contribution from weathering of carbonate rocks while positive CAI values indicated exchange of Na and K from the water with Mg and Ca of the rocks in the study area. The Ca 2+/ Mg 2+ molar ratio plot further supported the fact that dissolution of calcite with effect of silicate minerals contributes calcium and magnesium to 97.06% of the groundwater. SAR, percent sodium, WQI and permeability index values demonstrated the suitability of a majority of the samples for irrigation.

Investigation of Hydrochemical Dynamics of Groundwater in Coastal Blocks of Tiruvallur District, Tamilnadu, India

“…Gibbs plot is a common tool to decisive the relationship between water composition and lithological characteristics of aquifers [36]. The Gibbs plot has three fields: precipitation dominance, evaporation dominance, and rock-water contact dominance [13,[36][37]. Samples S1, S2, S5, S8, S9, S10, S11, S12, S15, S16 and S19, experience evaporation superiority due to semi-arid environmental climate conditions and surface pollution sources, mainly excessive fertiliser usage, irrigation return flow, industrial outflows, and domestic discharges (Figure 7).…”

“…The restoration of the quality of groundwater after pollution is difficult and it normally takes a long time to return to its natural state. Groundwater quality monitoring in a region is done regularly to identify areas with possible environmental health issues [13]. The foundation for scientific groundwater resource management is hydro chemical studies [1].…”

“…Hence, determining the amount and quality of groundwater is pertinent for advancing humanity and creating a database for potential water resource production strategies [16]. Presentation of chemical analysis in graphical form makes the understanding of complex groundwater systems simpler and quicker [13][14][15][16]. The Piper diagram portrays the hydro chemical regime in terms of cations and anions.…”

Lowari Tunnel Water Quality Evaluation: Implications for Tunnel Support, Potable Water Supply, and Irrigation in Northwestern Himalayas, Pakistan

“…Water with high TDS and SAR values can negatively affect soil structure and crop yield. The SAR level can cause soil dispersion and reduce water infiltration rates, while high TDS levels can cause salt accumulation in the soil and plant tissues [42].…”