Water Quality Assessment of Certain Selected Tank Waters of Tiptur Taluk, Karnataka, for Irrigation Purpose

Physico-chemical properties of six selected tank waters of Tiptur taluk were examined for the suitability of water for irrigation purpose through pH, EC, CO₃^-2, HCO₃^-, Cl^-, SO₄^-2, PO₄^-3, Na⁺, K⁺, Ca⁺², Mg⁺² and boron. The assessment of the samples was made in terms of salinity problem, sodium hazard, permeability (infiltration) problem and toxicity problem through the parameters EC, SAR, RSC, RSBC, % Na, chloride and boron content of water. These values were compared with the guidelines set by Ayers and Westcot, Eaton and Wilcox. Results of analysis showed that water of Vaddaramallenahalli tank has EC<0.2dSm^-1 and SAR 0-3meq/L and was not ideal for irrigation. Waters of the remaining five tanks, i.e., Eachanoor tank, Karadi tank, Halkurke tank, Honnavalli tank and Albur tank were falling into moderate class. No sample in the study area was ideal for irrigation.