Application of Integrated-Weight Water Quality Index in Groundwater Quality Evaluation

Groundwater is one of the most crucial freshwater resources in many parts world. However, growth population and different economic activities have negatively impacted groundwater quality. This study aims to assess quality An-Giang province, Vietnam, from 2017–2020 investigate its suitability for drinking via a new integrated-weight water index (IWQI). The samples were collected at thirteen wells dry rainy seasons analyzed eleven physicochemical parameters, including pH, total dissolved solids (TDS), hardness, nitrate (NO3?), ammonium (NH4+), iron (Fe), manganese (Mn), arsenic (As), mercury (Hg), lead (Pb), coliform. These values compared Vietnamese standard. entropy weight method Criteria Importance Though Inter-criteria correlation weighting was integrated compute weights IWQI. results showed that NH4+and coliform concentrations consecutively higher than standard over period. No detection As, Hg, Pb 2019 – 2020. There significant statistical differences between parameters seasons. IWQI revealed about 40% 2020 categorized as unsuitable drinking. range 72 7973 2020, 12 3020 2019, 21 1115 2018, 53 2246 2017. Most with high are located near burial pits African fever-infected swine. findings this could provide further information changes An Giang can be proposed other studies evaluate effectively. Doi: 10.28991/CEJ-2022-08-11-020 Full Text: PDF