Typically a water harvesting system can be installed by a builder and the internal pipework would be carried out by a plumber. However conserving water has become a priority in many countries and there are now many online sources that provide the consumer with the knowledge of how to install a water harvesting system.
Most do not consider the opportunities that can be made possible with rainwater harvesting. Once collected the rainwater can be stored and then used for either watering the garden, flushing toilets or washing clothes.
A catchment system that is capable of collecting 40-100 gallons of water can be installed. Because this water is untreated it is not be suitable for drinking or bathing. However, if you are hoping to use rainwater for drinking, a more complex system will need to be installed.
Tips for installing your own water harvesting system:
Most roofing materials will be acceptable if the water collected is to be used for outdoor purposes. These materials include:
It should be noted that there can be toxins in the water from the asphalt and therefore it should not be used for watering garden vegetables.
Storage Tank/Rain Barrel:
The most suitable storage tanks are designed to withstand very cold temperatures and will not become misshaped with the weight of the water. The tank for your water harvesting system should be opaque as this prevents the growth of algae.
It should also be securely covered so that small children or wildlife do not have access to the rainwater. You should place the tank in a safe area but would also need to be accessible for maintenance should it require any.
The storage tank will need to be raised several inches off the ground and this can be done using cinder blocks, cement or a solid 4” block of rot resistant wood. The blocking should be level and protrude 1” all around. This will ensure that when the barrel is full there will be sufficient stability.
Guttering and the Downpipe:
In some cases it may be necessary for some adjustments to be carried out concerning the guttering or the downpipe. There are some water harvesting systems that are self -cleaning and these are more costly than the systems that would require cleaning.
The gutters should be checked regularly to inspect any blockages, as occasionally leaves and debris can become trapped. In order to receive the cleanest possible water, the gutters should be sloped to ensure continuous water flow.
Gutters with riveted seams are suitable older gutters are not as appropriate as they would require more maintenance.
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