Seasonal Variations in Groundwater Quality under Different Impacts Using Statistical Approaches

The objective of this study was to evaluate seasonal fluctuations in groundwater quality, determine the effects different stressors on resource, and recognize potential pollution sources a coastal region southern Vietnam. Eleven samples collected Ben Tre province during dry wet seasons were then analyzed for sixteen parameters, including pH, total dissolved solids (TDS), salinity, hardness (TH), ammonium (NH₄⁺-N), nitrite (NO₂ˉ-N), nitrate (NO₃ˉ-N), sulfate (SO₄²ˉ), chloride (Clˉ), iron (Fe), manganese (Mn), lead (Pb), mercury (Hg), arsenic (As), coliforms, Escherichia coli (E. coli). Pearson correlation analysis, principal component analysis (PCA), cluster (CA) employed. results indicated that solids, hardness, Clˉ, E. coliform detected as contaminants samples. trend parameters mostly higher season. Which Mn significantly fluctuated between seasons. Activities industrial-craft areas, landfills seawater-intruded areas negatively impacted typically TDS E.coliat landfill area. Six components obtained from PCA could explain 93.6% variance, all are responsible variations quality. Geology, discharged wastewater, leachate, agricultural activities, saltwater intrusion can be considered representative factors. CA grouped into four clusters based similarity water properties. showed locations each have outstanding quality characteristics, I III high II has IV sets with salinity. This is promised partially fill gap comprehensive information so policymakers develop sustainable management strategies future. Doi: 10.28991/CEJ-2023-09-03-01 Full Text: PDF