An Analysis of Roof Rainwater Harvesting: A Catalyst to Water Demand Management

Abstract

Yearly, the rainy season always happens globally, especially in the Asia Pacific. Where water is directly on the soil, roof, plants, etc. without proper harvesting, this water may cause damage in many aspects, such as over watering to the plants, soil, erosion, bacteria, and germs that cause viruses to begin to grow if it has been tainted y dirt and other impurities. So, proper harvesting of roof rainwater is important because it will be utilized for bathrooms, laundry, garden irrigation, etc. The Information and Communication Technology building of Isabela State University – Ilagan Campus was utilized in this study. This paper presents the average rainfall, which represents the monthly average, water availability, water demand, and water storage. As stated, the water demand is 2500 liters per day, which equals about 75000 liters per month. Wherein the amount of water that can be collected from the roof is larger than the water demand. The finding of this paper was extremely beneficial to the campus because they presented the entire details of the roof rainwater harvested in liters which will serve as the basis for utilization.