centre for science and environment, new delhi making water everybody’s business jalswaraj- centre...
TRANSCRIPT
![Page 1: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/1.jpg)
Centre for Science and Environment, New Delhi
MAKING WATER EVERYBODY’S BUSINESSMAKING WATER EVERYBODY’S BUSINESS
JALSWARAJ-JALSWARAJ-
Centre for Science and Environment, New Delhi
![Page 2: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/2.jpg)
Once consisted of group of seven islands called Colaba, Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion.
![Page 3: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/3.jpg)
Vehar lake Tulsi Lake
Tansa Dam Vaitarna
![Page 4: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/4.jpg)
INCREASE IN POPULATION
3
12
0
2
4
6
8
10
12
14
1 2
IN M
ILLI
ONS
1951
2002
![Page 5: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/5.jpg)
DEMAND, SUPPLY AND GAP
34002900
500
0
500
1000
1500
2000
2500
3000
3500
4000
1 2 3
SOURCE : MUNICIPAL CORPORATION OF BRIHANMUMBAI
IN M
ILLI
ON L
ITRE
S PE
R DA
Y
![Page 6: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/6.jpg)
PRESENT WATER SOURCE 68
18
455
1044
1365
![Page 7: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/7.jpg)
• BMC has extensive network…
BUT
Distribution is not uniform.
Suburban consumers have to supplement with tankers—spending at least Rs 450 per day
Also quality of tanker water is a major concern.
WHO GETS HOW MUCH…
![Page 8: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/8.jpg)
The amount that goes ‘unaccounted for’…
About 20 to 25 per cent is lost in leakage and pilferage.
![Page 9: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/9.jpg)
GROUNDWATER QUALITY…
SEA WATER INTRUSION – Colaba, Dharvi, Khar, Anderi, Chembur, Malad etc.
INDUSTRIAL POLLUTION – Greater mumbai area
( High Nitrate, trace elements like Cu, Cr, Hg etc are found in water)
Source: Central Ground Water Board
![Page 10: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/10.jpg)
FUTURE DEMAND, SUPPLY AND GAP
5400
33552045
0
1000
2000
3000
4000
5000
6000
1 2 3
SOURCE : BMC
IN M
ILLI
ON L
ITRE
S PE
R DA
Y
MIDDLE VAITARNA STILL WAITING FOR CLEARENCE
![Page 11: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/11.jpg)
• Only 20 per cent of the water is used for drinking, cooking;
• Over 60 per cent is used for bathing, washing and flushing down the toilet. Important that our water toilets are still 10-12 litres per each pull of the chain.
Literally, water down the drain…...80% potable water ends up as waste-
water
And WASTAGE…FLUSHED down the drain
![Page 12: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/12.jpg)
• Only 24 per cent of the wastewater generated by urban India is treated—Mumbai accounts for 23 per cent of the total amount produced
• The rest 76 per cent is disposed of into WATER BODIES (rivers, lakes etc) untreated
• These water bodies are the water sources for the cities in the down stream
WE ALL LIVE DOWNSTREAM
![Page 13: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/13.jpg)
• Water is cheapest in Delhi. 35 per KL as compared to production cost of Rs 6-7 per Kl.
• Mumbai is in a better position, the cost for domestic supply is Rs 2.25 per KL and the production cost is Rs 5.74 per KL
• In Indore the cost for domestic 2.00 per KL and the production cost is Rs 9.50 KL.
• Bangalore charges Rs 5-60 per KL and the production cost is Rs 13 per KL.
But, strangely the supply is almost FREE
![Page 14: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/14.jpg)
Area – 437 sq kmts
Annual avg .rainfall – 2000 mm
Potential - 2394.52 MLD
Present water supply = 2900 MLD
Options:Storage;recycling; and recharge
Even if we assume 70 % of the area to be developed, 50 % of it to be roofed and we collect 70 % of the water falling over it, the quantity of rainwater that can be harvested works out to 589.34 MLD. This is a sizeable quantity compared to water supply to Mumbai. It may also be reminded that the Middle Vaitarna project is for 455 MLD.
WATER HARVESTING POTENTIAL OF MUMBAI
![Page 15: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/15.jpg)
SUCCESS STORIES IN MUMBAI…
BEST BUS DEPOT
TATA INSTITUTE OF SOCIAL SCIENCE
![Page 16: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/16.jpg)
• Reclaimed land and threat of salinity. Quality of water—of both municipal supply and tankers
• Unequal distribution• Wasteful consumption pattern—leading to
overwithdrawal from sources—heading for urban-rural conflict?
Therefore, overall water management is the order of the day—with RWH as a key component
Basic concerns of a Mumbaikar…
![Page 17: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/17.jpg)
• Create informed public opinion…the ALMs can play a key role here
• Training the real users • Strict legislation
Way AHEAD
![Page 18: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/18.jpg)
• Mumbai Municipal Corporation has made rainwater harvesting (RWH) mandatory to the properties having plot area more than 1000 sq. mts.
• This condition will also be made applicable to existing buildings in near future.
• Recycling has been made compulsory for buildings having centralised A C plants.
• BMC will supply 90 LPCD instead of 135 lpcd to ensure RWH will supplement the gap.
Mumbai
![Page 19: Centre for Science and Environment, New Delhi MAKING WATER EVERYBODY’S BUSINESS JALSWARAJ- Centre for Science and Environment, New Delhi](https://reader030.vdocument.in/reader030/viewer/2022032705/56649d8c5503460f94a73f9c/html5/thumbnails/19.jpg)
Role of the people..
• None of this will work unless….
The citizens make rainwater harvesting their own business