Translating…
Rainwater harvesting is the collection of rainwater from the roof of houses and buildings. The water that was collected from harvesting can then be used for domestic purposes, for farm use, for irrigation and other purposes. If it will be used for household purposes you can utilize it for washing clothes, cleaning the cars, watering the plants and other household uses. If it will be used for drinking it must be processed and pass through filtration and must pass through laboratory test to ensure that it will be safe and potable. Water harvesting can be an effective money and water saving for most homeowners.
Rainwater harvesting from rooftops is ordinary since it is easy to collect rainwater. From the gutters of your rooftops you can attach a pipe leading to your container, tank or storage system. The size of the storage system you have to prepare depends upon the amount of rainwater you need. Rainwater harvesting is a good practice since you will be able to conserve water and save it as well. Though rainwater may contain some debris as you collect it but you can prevent this by using screen to filter the water even before it enters the pipe from the gutters of your rooftops. As the first rainfall of the season touch your rooftop you must allow it to clean your roofs and thereafter the following rainwater can be collected and stored for future use. Most often industries practice rainwater harvesting for their industrial use.
Rainwater harvesting is a good practice especially if there is scarcity of water. You can conserve a lot of water through rainwater harvesting. Rainwater harvesting is also used to recharge groundwater supply. After a long drought you can expect the following will be succeeding heavy rainfall. For groundwater recharge, ponds, lakes, and other unlined water surface reservoir can be used as impounding reservoir and filter before it reach the underground source. This will also improve the quality of groundwater supply.
Rainwater also helps to mitigate flooding. If more rainwater is harvested especially in the cities it will lessen floods. Rainwater harvesting also helps reduce erosion. You all know that rainwater causes heavy runoff especially in mountainous and sloping areas where there are no more trees around that would help in soil erosion. With harvesting soil erosion is lessened thereby saving lives and properties in low lying areas.
Rainwater and distributing it more efficiently helps in agriculture and irrigation. It helps in the growth of plants by washing away salts down below the plant roots and soil. Water harvesting also keeps fertilizers and pesticides out of plants, streams and groundwater. With rainwater it contains natural nutrients essential for plant growth. Specifically in areas where they depend on rainfall before planting, rainwater harvesting is also widely practiced by impounding water in reservoirs. The impounded water from harvesting will be distributed in large agricultural areas to water the irrigation systems necessary for planting.