Ground water Chemical assessment in Chikmagalur District of Karnataka
*B.V. Mohan Kumar and **B.R. Kiran
*Department of Chemistry, IDSG Government College, Chikmagalur-577102 (India) **Research & Teaching Assistant in Environmental Science, DDE, Kuvempu University, Shankaraghatta-577451 (India)
ABSTRACT
The present study deals with the ground water chemistry in relation to few physico-chemical parameters in 10 areas of Chikmagalur district in Karnataka during January-July 2020. In this study, pH values varied from 7.21-8.6. The turbidity values ranged between 6 and 40 NTU. The values of electrical conductivity ranged between a minimum of 750 to a maximum of 1410 μmhos/cm Total hardness values varied from a minimum of 585 to a maximum of 1520mg/1. Calcium values ranged from a minimum of 62.5 mg/l to a maximum of 128.4 mg/1. Magnesium varied from 36 mg/1 to 98.5 mg/1. The nitrate values ranged minimum of 42 mg/1 to a maximum of 410 mg/1 The phosphate content ranged from 0.5 mg/1 to 0.94 mg/1. Chloride values ranged from a minimum of 76.5 mg/1 to a maximum of 400.2 mg/1 respectively. However, iron level fluctuated from 0.5 mg/l to 3.34 mg/l. Nitrate was maximum at Birur area and lesser in Bettadahalli region. Total hardness was highest in Birur and lowest in Singatagere region. However, iron content was peak in Koppa region and lowest in Avathi area. 90% of the ground water samples showed high salinity and 10% showed medium salinity. One-way ANOVA,post-hoc Tukey HSD test, Scheffé, Bonferroni and Holm multiple comparison tests are carried out for physico-chemical parameters of ground water samples.