During the summer, rooftop plastic water tanks can absorb excessive heat, leading to uncomfortably hot tap water. This can complicate daily tasks like bathing and washing. Fortunately, there are several practical methods to keep the water cool. One effective approach is to apply white paint or a reflective coating to the tank's exterior, as this reduces heat absorption. Another traditional method involves wrapping the tank with wet gunny bags, which cools the water through evaporation when kept moist. Additionally, insulating the tank with thermocol sheets or using insulated covers can help maintain lower temperatures. Creating shade using materials like green nets or coconut leaves can also block direct sunlight, further preventing heat buildup. Lastly, protecting exposed pipes with insulation can ensure cooler water flows through taps. These simple, low-cost strategies can make a significant difference in maintaining comfortable water temperatures during intense summer heat.