in the city mean water scarcity. This problem is compounded by increased
salinity and receding ground water levels. But, there is a novel
idea that ensures all these fears are put to rest.
It is called Rainwater Harvesting. This method uses
rainwater, conserved during the monsoon season, for domestic purposes.
Chennai is blessed with an average of 129 centimetres of rainfall
every year. If properly utilised, this rainwater can be used to
boost the declining ground water level and reduce salinity in the
already saline ground water.
presently happens in the city is that ground area around houses
and complexes are being cemented. This forces rainwater, which drains
off from terraces and roofs, to drain into low-lying areas, not
allowing it to percolate into the soil. Thus precious rainwater
is wasted, as it drains into the sea eventually. Rainwater which
collects on the roofs and the area around the building is directed
into open wells through a filter tank or into a percolation chamber,
built specially for this purpose. This method is cost efficient
and no maintenance is required.
The Tamil Nadu government is also encouraging promotion of awareness
of rainwater harvesting, by means of a notification released by
Chennai Metrowater, urging builders to patronise this sustainable
For the city residents, Sekhar Raghavan, a Resource Person
on Rain Harvesting at Chennai Metrowater, gives free advice
and helps implement rainwater harvesting in houses and complexes.
For more details contact:
Author: Leslee Lazar
D-15, Bayview Apartments, Kalakshetra Colony,
Besant Nagar, Chennai - 600 090.
Phone: 491 8415 (Residence) 85502802 (Office)