the management of water in urban india - some possibilities
DESCRIPTION
Some ideas at integrated urban water management looking at the hydrological and ecological cycles.TRANSCRIPT
Water Management and Conservation for a Sustainable
Future
S.Vishwanath
The S.T.I.F.L.E. model for sustainability
Social – In which a clear Universal access has to be defined with water as a human right
Technical – where a mix of appropriate technologies are selected
Institutional – an integrated water management institution is created
Financial – where financial sustainability is achieved
Legal – the legal right to water and pollution prevention is exercised
Ecological – the true ecological preservation of the water environment from forests to sea is achieved
The Cauvery river basin Payment for Ecological services
Bangalore
Bangalore
A city like Bangalore gets its water from the Cauvery 95 kms and 500 meters below the city
Law of the jungle – need for a river basin institution
Old forest release water or do they?
We are a groundwater civilization
Over 30 million wells and bore-wells Over 60 % of our total water
requirements Over 85 % of our drinking water
needs
..and the only source for recharge is RAIN
How is groundwater managed in a city ?
The open well is a great communicator
Get back to the culture of the open well
Urban needs
Map micro-watersheds and plan/implement along it
Map sub aquifers and draw a management plan for it .
Understand the phenomenon of monsoon
As we work on catchments we need to work to isolate water for drinking from water for agriculture or industrial use
Groundwater
Open wells are generally free from Fluorides and Arsenic
Open wells have the lowest cost water
Open wells have the lowest embodied energy
Aquifers need recharge Aquifers need water safety plan to
protect from pollution.
Water is also spiritual
Need to revive a fallen culture
The Belgaum Example
An innovative ‘jugaad’ civilization
A special plan for the future
The H2S vial test for e.coli
Water and Rain is Everybody’s business
EVERY ROOF CAN BE A CATCHMENT
Rain barrel : easiest way to begin rainwater harvesting
Rain barrels at work
Rainwater harvesting in an industry
4 acres > objective 0% runoff
Rain Barrels harvesting rooftop rainwater
The little important things
The business of wastewater
184 out of 219 towns in Karnataka do not have a Sewage Treatment Plant
Safe use of wastewater ensured
STP’s need to be linked to reuse
Nature as treatment
Lake ecosystem
Sludge reuse need to be formalised
Vacum sucking a pit latrine
the honey-sucker can reach 250 feet
It has eliminated manual scavenging
There are 300 of them in Bangalore City
The trucks are indigenously designed
In many apartments a daily visit
Nutrient value is recovered
But how to avoid soil and groundwater pollution ?
Nutrient analysis in progress
Farmers have understood the nutrient value
The crop
The fruits