Tap water is the main source of water supply at FEDZ. In 2023, the plant launched a plant-wide tap water leak detection project to take stock of water usage points, prepare the plumbing diagram, classify the tap water usage into production and domestic purposes, and install water meters. The readings are recorded daily to identify points with unusual activities with plans formulated to identify leakage, which is repaired immediately once identified. A plan for system retrofit is also established if immediate repair is not viable. The project identified leakage in the domestic pipelines, of which the majority are underground. The repair was completed at the end of November 2023, and the domestic water consumption went down dramatically by 80%, equating to NT$1.1 million in annual financial benefits.