Posts Tagged ‘water conservation’

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Rainwater harvesting – Vastu certified

March 10, 2008

Tis neighbour of ours is a senior citizen. He obviously has his belief which one respects and therefore ‘Vastu’ proofing his house apparently called for this fluoroscent colours of bright yellow and orange . These are all over the city now and no it is not some post modern fetish sweeping the city it is an old ancient one called Vastu (Indian Feng Shui to those uninitiated).

But the nice part for rainwater harvesting is that he read about it in the newspapers and came a visiting our house alongwith his plumber. They figured out the best way to do rooftop rainwater harvesting. Collect it into a sump tank but if opportunity arises to lead the rain into a small well that he already had. The filter was the key and the blue drum filter of ours was right. He had some difficulty in sourcing the Male threaded adapter and the female threaded adapter (MTA and FTA) something to note for the Rainwter Club and so we were pleased to give this to him.

They now have a full fledged system at work and you can see the result

We expect the water quality in the well to improve and him to get about 150,000 litres of water every year of average rain.

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Green deserts and the stupidity of money

February 28, 2008

IT cos waste water on lawns

IT cos waste water on lawns
The Times of India

Bangalore: Chew on this: An estimate says IT companies use 10,000 to 1 lakh litres of potable water daily to water the lawns.
•Each square metre of such lawns needs seven litres of water.
•Lawns are watered twice or thrice daily, especially in summer.
•An IT company buys 60,000 litres of water daily just to keep an artificial lake on its campus full.

Where does all this water come from? In the case of IT companies, it comes from borewells in the surrounding city municipal councils (CMCs) or from wells. At Mahadevapura CMC, for instance, locals say water is found only at depths as low as 850 feet. Yet, tankers do a brisk business, pumping water to the nearby ITPL.

Groundwater exploitation is not new and it’s accentuated further in the summer. Rainwater Club founder S. Vishwanath says: “Using up borewell water deprives the locals of their share of water. It’s a crime. It’s stupid to waste drinking water on lawns.’’ Mahadevapura CMC officials express helplessness. “We cannot prevent tankers from using private borewells,’’ CMC assistant engineer T.C. Kodantaram says. A Government Order issued two years ago banned the use of potable water for gardening, washing cars and construction purposes. The law is applicable only in BCC areas, where it’s violated with impunity. Well, BCC itself uses borewell water to green the medians!

So, does a borewell holiday help? “Not unless it’s a practical alternative,’’ says Vishwanath. In the absence of such a ban, companies could at least adopt less water-intensive methods. “They could plant species that need little water, or opt for rainwater-harvesting.’’

There is a silver lining, though. Some companies have woken up to the danger of using water unsustainably.

WeP Peripherals, for example, harvests rainwater on its 22-acre Mysore factory campus and plans to replicate it at its Bangalore head office. Ditto with Denso Kirloskar in Nelamangala. But why lawns? An IT company official admits: “It’s a western image. A lawn looks ‘green’ though everyone knows it’s anything but green.’’

THE ALTERNATIVES

Go for Zen look, use stone formations et al
Plant the likes of cacti that need very little water
Keep an ‘edible’ landscape — grow pomegranate, chikkoo, sitaphal
Better still, grow ragi, the crop that can be harvested too!

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Ecosan-source separating composting toilet

January 25, 2008

An ecosan toilet is a source separating composting toilet and a black water saver. It also generates good nutrients for plant growth. It also does not pollute

our precious water resources. This is the way to go with sanitation