Page 9 - TCExpessions 2019

Cover Story 9

This is especially true for India as the country is among unit. The water loss is then assessed by installing flow
the top 10 water-poor nations in the world with per- measurement units and leakage detection equipment.
person water availability being one-fourth of the world
average. Most Indian cities have intermittent water supply TCE’s mobile tanker methodology has been successfully
given the widening demand-supply gap. Worse still, they used in several cities such as Ahmedabad, Chennai
experience high water loss, which could be as much as and Hyderabad, achieving a reduction of up to 50% of
50% in some cities. Hence, leakage control programmes the baseline leakage rate. Its success in Kathmandu, in
are critical for reducing water loss and bridging the gap neighbouring Nepal, has helped make the city’s water
between rising demand and sustainability of supply more sustainable.
water resources.
That’s not all. The company is also promoting sustainable
However, while most developed countries use the development by designing integrated water supply,
minimum night flow (MNF) method to detect leakages, sewerage and storm-water management project for the
this has limitations in India because of intermittent 1,700-acre Bengal Aerotropolis township near Durgapur in
water supply. Hence, TCE has devised a mobile tanker West Bengal (see box, BAPL - A ‘sustainable’ success story)
methodology to assess water loss arising from leakages to
improve supply. With this, the area under consideration is Cleaning up the air
isolated and water is supplied to it from a mobile tanker TCE’s sustainability efforts aren’t limited to improving