Taiwan receives abundant rainfall, the annual average is about 2,500 millimeters, yet the island faces periodic water shortages, especially in the dry season from November to April. Reservoir levels in northern Taiwan, such as the Shihmen Reservoir in Taoyuan, have dropped below 10 % capacity in recent droughts, triggering stepped water restrictions for millions of households. Reducing household water consumption is not only an environmental necessity but also a direct way to lower monthly utility bills. Based on Taiwan Water Corporation (TWC) data, the average household of four uses roughly 40 cubic meters of water per month, with a progressive tariff that rises steeply after 20 m³. This article provides specific, actionable water-saving tips for Taiwanese households, covering fixture upgrades, behavioral changes, appliance selection, and outdoor conservation. All prices are in New Taiwan Dollars (NT$) and were verified in Taipei-area hardware stores and online retailers in April 2025.