Bangalore in numbers

50
estimated percentage of population to be evacuated in Bangalore if the current water woes continue

52
percent of borewell water in the city that is contaminated with sewage and is unfit for drinking

59
percent of borewell water in the city that is contaminated with sewage and is unfit for drinking

200
number of lakes existed in the city at one point of time

140
number of lakes that remain on the map, albeit for namesake, and are gasping for breath

41
percent of water that goes unaccounted from water distribution lines

2018
the year beyond which it is difficult for BWSSB to provide potable water

1,458
million litres of water BWSSB distributes per day

41
percentage of water lost in transmission

860
million litres of water reaching 16 lakh properties spanning 800 sq.km.

10
acceptable percentage for transmission loss

56
percentage of unmetered connections

Fact

It is here that the question of equity and insecurity-led storage comes into the picture. According to A.R. Shivakumar, rainwater harvesting specialist at the Indian Institute of Science, who has done considerable amount of work on water management practices, while the privileged in the city pay Rs. 6 to 9 for each 1,000 litres of water supplied to them by the BWSSB, the underprivileged pay Rs. 20 for the same quantity. But that’s not all. There are sections of people in slums in the city who have to cough up even Rs. 250 for the same quantity of water fetched through autorickshaws or home-delivered on bicycles.

It is this uncertainty that leads the people to store water and invest heavily on building storages, be it huge sumps, overhead tanks or drums or plastic bingis, as the case may be. Shivakumar estimates that Bangalore homes can store 8,000 million litres of water on an average day.

763
capacity of BWSSB reservoir in million litres

5
amount in rupees a consumer spends in constructing a storage for every litre of water

15
percentage of water wasted from storage because of cracks

4
estimated number of borewells in lakhs

16,000
amount in crores spent is digging the borewells at the rate of Rs. 40,000 per well

35
percentage of water for domestic consumers

41
unaccounted

3
percentage of water for non-domestic consumers

1
percentage of water for industries

3
percentage of water for defense

0.7
percentage of water for railways

920
average annual rainfall

20
percentage of need that can be supplemented by adopting rain water harvesting

10
percentage of need that can be supplemented by recycling waste water

Source: article in The Hindu.

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