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Centre for Science and Environment, New Delhi. JALSWARAJ-. MAKING WATER EVERYBODY’S BUSINESS. MAKING WATER EVERYBODY’S BUSINESS. Centre for Science and Environment, New Delhi.

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Centre for Science and Environment, New Delhi

JALSWARAJ-

MAKING WATER EVERYBODY’S BUSINESS

MAKING WATER EVERYBODY’S BUSINESS

Centre for Science and Environment, New Delhi


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Once consisted of group of seven islands called Colaba, Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion.


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Vehar lake Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

Tulsi Lake

Tansa Dam

Vaitarna


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WHO GETS HOW MUCH Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion…

  • 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.


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The amount that goes ‘unaccounted for’… Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

About 20 to 25 per cent is lost in leakage and pilferage.


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GROUNDWATER QUALITY… Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

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


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MIDDLE VAITARNA STILL WAITING FOR CLEARENCE Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion


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And Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion WASTAGE…FLUSHED down the drain

  • 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


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WE ALL LIVE Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – SionDOWNSTREAM

  • 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


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But, strangely the supply is almost Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – SionFREE

  • 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.


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WATER HARVESTING POTENTIAL OF MUMBAI Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

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.


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SUCCESS STORIES IN MUMBAI… Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

BEST BUS DEPOT

TATA INSTITUTE OF SOCIAL SCIENCE


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Basic concerns of a Mumbaikar… Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

  • 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


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Way Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion AHEAD

  • Create informed public opinion…the ALMs can play a key role here

  • Training the real users

  • Strict legislation


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Mumbai Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

  • 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.


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Role of the people.. Mazagaon, Old woman’s Island, Wadala, Mahim, Parel and Matunga – Sion

  • None of this will work unless….

  • The citizens make rainwater harvesting their own business