Over the last few years, mandatory rooftop rainwater harvesting in Chennai has greatly led to a big increase in the groundwater table. Now many city residents are turning their focus on recharging groundwater in public spaces in their localities.Rain Centre, a voluntary organization, is joining hands with local residents’ welfare associations to dig recharge wells along road corners. Apart from helping to recharge the groundwater table, it will also help to reduce waterlogging on the roads.
Recharge Wells
Recharge wells are groundwater recharge techniques used to directly discharge water into deep water-bearing zones. It takes water run-off from rooftops and roads, filters it, and sends it underground. Unlike a conventional well that taps into the aquifer, the recharge well sends water into the aquifer.
Each recharge well of a minimum of 3 feet diameter and 15 feet depth would cost nearly Rs 23,000. While 50% of the funds would be provided from corporate social responsibility funds, the residents’ welfare associations would have to pitch in the remaining amount. This year, the Centre plans to dig 40 recharge wells.
A considerable increase in groundwater table
The recharge wells have increased the groundwater table in many areas. Now water is available at 8-10 feet in shallow wells. Similar efforts are also being carried out in other parts of the city and residents are being sensitized about RWH and water conservation through the ‘Catch the Rain’ campaign of Safe Water Network.
New-age rainwater harvesting systems
One company that is changing the science of the rainwater harvesting systems in India is AquaStar. Using innovative RWH products, the company has made rooftop rainwater harvesting easy and simple. Available in different sizes and colors, the RWH structure perfectly syncs with the contemporary design of the home and buildings.