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Grey Water
Rainwater Harvesting systems in South Africa .

Eskom aims to reduce water consumption

IOL Londiwe Buthelezi

Eskom aims to reduce its water consumption by 260 billion litres a year by 2030. The utility said the alternative technologies used at its new power stations would reduce the water requirement to 270 billion litres by next year. The company would have needed 530 billion litres to operate its coal-fired stations had the new measures not been put in place.

Medupi and Kusile intend to use dry-cooling technology, which will reduce water consumption by as much as 90 percent

Eskom consumed 327 billion litres of water in the 2010/11 financial year. It used about 1.35 litres of water to generate a kilowatt-hour of electricity, making Eskom responsible for about 2 percent of South Africa’s fresh water usage.

But the roll-out of dry cooling and alternative technologies will see Eskom bring down water consumption relative to power produced to 0.99 litres a kilowatt-hour by 2030.

South Africa is a water-stressed country and environmental groups have previously challenged the building of Eskom’s new coal plants, citing water competition they would bring to local communities.

However, in its “Eskom factor” report, the utility said both Medupi and Kusile would use dry-cooling technology. This would reduce water consumption per unit of electricity produced by as much as 90 percent.

“They are dry cooled, so (they) use only about a tenth of the water that conventional wet-cooled power stations require. So this is why we say Medupi and Kusile are ‘cleaner coal’ than our older coal-fired stations,” Eskom spokeswoman Hilary Joffe said. Continue reading Eskom aims to reduce water consumption

Cape Town water and sanitation tariff 2011 to 2012

Posted by: Saving Water SA (Cape Town, South Africa) – partnered with Water Rhapsody conservation systems – 29 March 2011

Irrigating with grey water

As with previous years, the domestic single residential sanitation tariff remains linked to the water tariff at a rate of 70% of water consumption (70% of 50kl = 35kl). […]

Scientists to highlight water insecurity

Posted by: Saving Water SA (Cape Town, South Africa) – partnered with Water Rhapsody conservation systems – 28 February 2011

Demand for water in agriculture and energy production could spike in the coming decades while catastrophic floods and droughts strike more often, a water conference in Canada is to hear this week.

A pair of denim jeans requires up to 6 tons of virtual water

“At unpredictable times, too much water will arrive in some places and too little in others,” said Zafar Adeel, chair of UN Water which coordinates water-related efforts of 28 United Nations organizations and agencies.

Within a generation, water demand in many countries is forecast to exceed supply by an estimated 40 percent.

In other parts of the world prone to flooding, catastrophic floods normally expected once a century could occur every 20 years instead.

Meanwhile, spending on technologies and services to discover, manage, filter, disinfect and desalinate water, improve infrastructure and distribution, mitigate flood damage and reduce water consumption by households, industry and agriculture is expected to rise to a trillion dollars annually by 2020.

Some 300 scientists, policy-makers and economists will release these and other research findings as well as proven new tools, ideas and best practices for optimizing water management at a Canadian Water Network international conference in Ottawa.

The event kicks off on February 28 and runs through March 3. Continue reading Scientists to highlight water insecurity

Franschhoek urged to cut water consumption by half

Posted by: Saving Water SA (Cape Town, South Africa) – partnered with Water Rhapsody conservation systems – 09 January 2011

The Stellenbosch Municipality on Saturday urged Franschhoek residents to slash their water consumption by half.

Using a watering can in the garden can conserve water. Photo by Christopher Craig

Reservoirs in Boland and […]

Cape Town call to conserve water

Posted by: Saving Water SA (Cape Town, South Africa) – partnered with Water Rhapsody conservation systems – 06 October 2010

Climate change is already a reality, and the lower rainfall patterns this winter are threatening crops and other livelihoods in the Western and Southern Cape and Cape Town. This is exacerbated by the increase in […]