Comparison of contemporary and traditional indexing techniques for determining if groundwater is suitable for irrigation

Abstract

Irrigation water quality (IWQ) may be assessed using a number of water quality indicators, however they have some drawbacks. Using a logical subindex that is sufficiently adaptable and updated to indicate irrigation water appropriateness, this research tried to create a new Overall Irrigation Water Quality Index (Overall IWQIndex). The danger class, a modified rating system for each hazard class's characteristics, and other water parameters that have impacted the soil and plants were all taken into account, along with the maximum proven desirable and permitted value of the parameters. The suggested Overall IWQIndex, a few IWQ factors, and several diagram-based statistical techniques were used to assess the IWQ of forty calcite-type groundwater samples.After a comprehensive correlation analysis of the research data, the appropriateness for IWQ was eventually established. The postmonsoon and premonsoon samples fell into the "good" and "excellent" categories, respectively, according to the findings. In conclusion, the research created an indexing model that provides precise information on the appropriateness of irrigation water and is simple to calculate and rationalise.