rain_harvest_rooftop_teaser_image_B&W (2)

RWH in apartment/residential complex

With the number of apartment complexes rising, so is the demand for water. The problem is that we have depleted a majority of our water sources and are now facing a severe scarcity.  This has forced the residents of almost every apartment complex to buy water from private water tankers at exorbitant rates, as they can’t depend solely on the water rationed by the metro water tankers.

This is where Rainwater Harvesting comes into play, being one of the most sustainable technologies to fulfil the ever-increasing water requirements. Every new building constructed these days mandatorily needs to install an RWH system. But what about all the existing apartments that do not have an RWH system?

If you live in an apartment complex, here are a few key things to know about adopting and implementing an RWH system:

  • Rainwater Harvesting is not as expensive as it seems in comparison to the amount of water saved and the reduction in the water bill.

  • Most apartments usually have a residents welfare association and if not, the residents can come together and split the initial investment costs amongst them. The benefits reaped in the later months are multifold.

  • The welfare association could also take an initiative to have a contract with the builder for constructing and maintaining an RWH system.

  • In apartments or flats, a combination of  Rooftop and Surface runoff RWH systems are used to maximize the storage of rainwater.

  • Every apartment must have a separate pipeline for groundwater and rainwater. It is very important to split the usage of the rainwater collected between direct consumption and recharging the natural aquifers such as trenches, borewells and groundwater.

  • In comparison to an individual house, maintenance and cleaning of the RWH system would be maintained by the association rather than an individual.

  • By installing a water meter along with the RWH system, it helps reduce water consumption by up to 40% per flat.

  • Tamil Nadu Water Supply and Drainage Board (TWAD) hosts a dedicated website for RWH with complete information regarding techniques, legislation, technical information manuals and an RWH calculator. Centres are also set up to provide free technical guidance.