What is Rainwater Harvesting and the Importance of Harvesting Rainwater

Our most precious natural resource is water. The world's rapidly expanding population as a result of climate change is putting pressure on the world's water resources. The United Nations has reported a direct connection between poverty, hunger, and water stress and makes it an important issue.

An example of a resource that is declining is the drought of recent blizzards in California, Montana and North Dakota. There, the condition is dryest since the record began. This leads to serious wildfires and agriculture, energy production and destruction of manufacturing.

Using free water flowing down from the sky for free seems to be an obvious solution to this problem.

Absorption is the simplest form of rainwater collection, where the water tank is directly connected to the drain pipe of the roof. The water gun head has a capacity of about 200 liters and is usually used for outdoor applications such as gardening and car cleaning.

A more sophisticated form of rainwater collection system is a three-stage process involving collecting rainwater from a roof-like surface sent to a storage tank through a filtration / disinfection system for later use. Depending on the amount of rain and the size of the roof, this type of system supplies 50,000 - 130,000 liters of water annually to the household system.

The water tank is installed at the top of the building and uses gravity to distribute water to the necessary places. The obvious advantage of this system is that no external power supply is required, water is gathered from the roof, sent directly to the tank filtration system and flow to any place using gravity.

Aquariums are installed on the ground or underground, the latter being preferred to conserve space and cool down water to prevent breeding of dangerous bacteria such as Legionnaires disease. Water is distributed through the pump around the house

Over the past two decades, the average water tariff for British industrial plants has increased by 40%, indicating economic justification for the use of rainwater use. In addition, industrial plants usually have a large roof area, so you can use a lot of rainwater. Industrial machinery requiring water can make more effective use of rainwater than 'hard' treated tap water.

The Millennium Dome in London uses a catchment system utilizing a surface area of ​​900,000 square meters. Manchester's Honda dealer installed a 30,000 liter fuel tank with a surface area of ​​1,500 square meters and an annual water supply volume of 85000 liters and saved the company's water bill by 1,700 pounds.

At first sight Rain Saucer looks like an upside-down umbrella, but this simple innovation is an independent catchment system directly from the sky to the container. It provides a simple drinking water storage that can be transported and installed in a few minutes and used for disaster cases or in developing countries where clean water is expensive or absent.

Rainwater retention and rainwater collection - Urban design systems including rainwater retention and runoff reduction include Australia's water-sensitive urban design (WSUD), US low impact development (LID), the US sustainable urban drainage system SUDS) Known as the kingdom. In many parts of the world, the cost of fresh water rich drinking water is exceeded. However, regenerated water is usually sold at low prices to promote its use. The cost ratio will also change as freshwater supply depends on distribution costs, population demand increase, or limiting factors for climate change decline. Evaluation of reclaimed water can bring great flexibility to the entire system, so we need to consider the entire water supply system.

Rainwater storage is the capture of rainwater and can be used indoors or outdoors. The rain water storage system is as simple as a roof system with a hose attached bucket, down pipe, pump, roof cleaner, pressure tank. A simple system usually reuses water outdoors, but others send it to the toilet for rinsing or drinking water and drinking water

Rainwater retention captures, stores and uses rainwater for beneficial uses such as landscape irrigation. Rain water storage generally refers to capturing rainwater raining on the surface of the roof and not in contact with the ground. The rain that falls on the ground called rainwater can easily pick up pollutants such as oil and other pollutants and requires more treatment than the rainwater collected from the roof. For details of using rainwater, please see EPA 's WaterSense at Work.