There is a huge interest in water conservation and specifically in capturing and reusing rainwater in both residential and commercial buildings to reduce costs, environmental impact and lessen the load on municipal sewer.
Rainwater harvesting from rooftops is one of the solutions to conserve our precious water. There are two general types of rainwater catchment systems – active and passive. Most professionally installed systems incorporate aspects of both to maximise the water conserved.
Active rainwater system: It is the catchment system that actively collects, filters, stores and reuses natural water. The storage is the most visual aspect of an active system with large tanks. It also incorporate pumps, and filters the water. These are active components that require regular ongoing maintenance to run effectively and efficiently.
Passive harvesting system: In comparison to active systems, this incorporates no mechanical method of collecting, cleaning and storing rainwater. The intent with passive rainwater management is to create areas to contain waters until they can naturally be absorbed into the land. Vegetative swales, dry creek beds, and pervious concrete or pavers are types of passive collection systems. Passive systems can be relatively inexpensive and are generally simple to design and build.
Which is the best?
In most cases, one or the other can be used and can be highly effective; however, there are cases where one technique is better than the other, so both should be considered when looking at catchment systems. It actually depend on various conditions, the understanding of which can be made simpler by hiring professionals offering quality rainwater harvesting solutions in Kerry.
While active systems are more complex and expensive than passive, they have the ability to store large quantities of both winter precipitation and summer monsoon rains and move it to specific locations, where it is needed. Generally active systems are beneficial to irrigation systems but can also be utilised for indoor applications. Both types of catchment systems greatly reduce overall water consumption, but one major distinction is that active systems can also help reduce indoor water usage.
Passive systems require a bit more maintenance compared to active ones. They can be incorporated in most new or existing landscapes without major expenses. Building berms and swales to channel rainwater and slow it down to allow it to infiltrate are great places to start. Passive systems are a great resource for those interested in fully understanding how these systems work and how they can be used on both large and small projects.
Harvesting rainwater is a great option for conserving our precious water. Either passive or active, both of them save water significantly and should be incorporated in any harvesting project.