Revised Water PPT

8/7/2019 Revised Water PPT

1/21

Water for Bangalore

Water needs of Bangalore:

- Population of Bangalore 9 million

- Daily requirement of drinking

water @135 lts per person per day 1215 mld

- Add 20% for other uses 250 mld

- Total requirement 1465 mld

- Current Capacity of Cauvery 910 mld

- Shortage 555 mld


2/21

Water for Bangalore

-Expected supply from Cauvery

IV Stage 500 mld

- Shortage after Cauvery IV Stagein 2013 55 mld

This shortage is on the basis of current

population. Actually this would have grown atleast by another 5%


3/21

Water for Bangalore

How does the Water board propose to solve

this problem. Some of the proposed measures

are

- Bring water from Hemavathy

- Divert the west flowing rivers in Coastal

Karnataka and tap water from them- Use water in Manchanabele Reservoir

- Ultimately bring water from Almatti


4/21

Water from Bangalore

How feasible are these ideas?

- One of the most basic principles followed in

River management systems is that the watershould not be diverted from the respective

basin areas because it negates the principles

of equity. The benefits from any river should

first address the needs of people living in the

particular river basin.


5/21

Water for Bangalore

Let us now analyze the reasons for this sorry state

of affairs

- Primary reasons are the following

- Neglect of Arkavathy & Hesarghatta

- Neglect of the interconnected tank

system

- Converting SWD into a sewer system- Ignoring the benefits of circulation of

treated water for non potable purposes


6/21

Water for Bangalore

A framework of Solution from the Citizensperspective

- Revive the Hesarghatta lake and Arkavathyriver system which can yield 300mld; it cantake care of 25% of our requirement and thewhole project can be a reality within 5 years.

Plans are already there and what is requiredis the administrative foresight and thepolitical will.


7/21

Water for Bangalore

- Revive all the existing lakes of Bangalore,

not as stand alone lakes but as a completely

interconnected system of lakes. Wherever

the Rajakaluve is encroached either clear the

encroachment or create an alternative

interconnection. It will immediately bring up

the water table, compensate the heatcollector effects of asphalting and bring back

the famed climate of Bangalore


8/21

Water for Bangalore

- Further this will revive thousands of dead

bore wells and significantly reduce the

dependence on the present water supplysystem, especially in the peripheral areas.

- This will enable a sustainable supply of at

least 200 mld through the planned use ofground water


9/21

Water for Bangalore

- Stop all illegal letting in of sewage into the

Storm Water Drains which are meant for

collection and discharge of rain water.

- Relocate the sewage lines constructed

within the SWDs

- Prevent future violations by fencing the

SWD network and having 24/7 security


10/21

Water for Bangalore

- This will enable the rain water to becollected in huge lakes around the city whereyou can set up water treatment plants and

supply drinking water.- This results in effective decentralization andbetter management

- It is estimated that an average rainfall of750mm p.a. can supply 120 days requirementof drinking water.


11/21

Water for Bangalore

Going through the rainfall data for the past

110 years, it is found that the average rainfall

was less than 750mm per annum in about 20

years and for the rest of the years it has been

between 750 and 1300 mm. If proper storage

capacity is created this variation could also

be taken care of.


12/21

Water for Bangalore

- Immediate steps need to be taken to supplytreated waste water for all non potableusage. This will effectively bring down the

demand for filtered water.- The actual requirement of filtered water isabout 35 to 40 Lts per person per day. Therest of the water is required purely for nonpotable use.


13/21

Water for Bangalore

- It should be mandated that all new layouts,

huge apartment blocks should have twin

water supply lines to facilitate the circulation

of treated water for non potable uses such as

toilet flushing, car washing, gardening etc.

- It is criminal to use filtered water for above

purposes


14/21

Water for Bangalore

Once these schemes are fully implemented ourdependence on Cauvery comes down drastically as thefollowing table shows:

1. Arkavathy & Hesarghatta 300 mld2. Revival of Lakes 200 mld

3. RWH through SWD 400 mld

4. Recirculation of Treated Water 200 mld*

Total 1100 mld

*This can be far higher if the entire city is covered with twinwater lines.


15/21

Water for Bangalore

- Shortage after the implementation

of Cauvery IV Stage 55 mld

- Contribution from new sources 1100 mld- Surplus 1045 mld

This surplus can meet the needs of another

8 million population

Projected Population of Bangalore by 2050 is

around 16 million


16/21

Water for Bangalore

- In fact it can serve a larger population if we

mandate the use of twin water supply lines

for all new residential layouts; then the

requirement for filtered water will be only 40

liters per person per day.


17/21

Water for Bangalore

It is abundantly clear that the ONLY possible

solution is to implement the measures

outlined above instead of pursuing inherently

unjust and unfair schemes which will create

unnecessary and avoidable inter and intra

state litigations without actually solving the

basic problem


18/21

Water for Bangalore

-What every stakeholder needs to do

- For the successful implementation of this

project- the State Government should exercise

the necessary political will;

- BWS&SB should exhibit farsightednessin planning and implementing the

project


19/21

Water for Bangalore

- The citizens should resolve to change their

mind set regarding the water usage pattern

- Most importantly, there must becitizen participation right from the

planning to implementation stage

so that ultimately the whole projectwill benefit the citizens


20/21

Water for Bangalore

CAF intends to facilitate this through

active interaction among all the

stakeholders and is willing toarrange such interactive meetings

between and among all the

stakeholders


21/21

Water for Bangalore

Thank You

Revised Water PPT

Documents

Transcript of Revised Water PPT