Liquefaction is a significant geohazard in seismically active regions, causing ground deformation, infrastructure damage, and agricultural disruption. This study aims to assess the liquefaction susceptibility of sediments in Pidie Jaya, Aceh, Indonesia, and evaluate their environmental implications through an integrated geophysical approach combining electrical well logging and two-dimensional (2D) electrical resistivity tomography (ERT). Surveys were conducted in Rhieng Krueng, Dayah Baroh, and Jurong Ara, where borehole logging provided vertical stratigraphy and resistivity data, while 2D ERT sections revealed lateral variability. The results indicate heterogeneous subsurface sequences consisting of sand (0–57 Ωm), sandy clay (0–32 Ωm), and clay (13–750 Ωm), with loose, water-saturated sands confined between impermeable clay layers forming aquifers highly prone to liquefaction. Shallow groundwater depths, averaging 6.8 m, further exacerbate the risk of excess pore-pressure buildup during seismic shaking. These findings highlight critical horizons where soil instability may endanger agricultural productivity, irrigation systems, and rural settlements. However, the research is limited to three survey sites, which may not fully capture the district’s spatial variability, and integration with geotechnical and seismic response analyses is recommended. The practical contribution of this work lies in demonstrating that combining electrical logging and ERT provides a reliable, cost-effective framework for identifying liquefaction-prone sediments and evaluating hydrogeological conditions. This integrative method offers valuable insights for disaster risk reduction, land-use planning, and resilient infrastructure development. As one of the first studies applying this approach to Pidie Jaya, it underscores the environmental significance of subsurface heterogeneity and provides essential input for sustainable hazard mitigation in seismically active regions.