Alien Plants are costing the world $1.4 trillion per annum (i.e. 5% of the global GDP)
Regional Water Statistics
General water figures
- 7 000 l – The water required to refine one barrel of crude oil.
- 2 900 l – The volume of water required to produce one cotton t-shirt.
- 25 700 l – The water required to grow a day’s food for a family of four.
- 100 l – The volume of water used by a five-minute shower with a standard shower head.
- 5 000 l – The volume of water required to produce a standard size meal of steak, potatoes and salad with a couple of glasses of wine.
- 145 l – The litres required to produce one serving of a fizzy soft drink.
- 1 000 t – The estimated tons of water required to produce one ton of grain.
- 11 00 l – The volume of water required to produce one hamburger.
World water figures
- 10 l – The volume of water the average person in the developing world uses in a day.
- 300 l – The volume of water the average American consumes in a day.
- 2 – The number of planets we will require by 2030 to keep up with humanity’s demand for environmental goods and services.
- 1,4 billion – The estimated number of people who live in river basins where their use of water exceeds minimum recharge levels, leading to the desiccation of rivers and the depletion of groundwater.
- 5 000 m3 – The volume of water there would be available for each person if all the freshwater on the planet were divided equally among the world population.
- 60 000 – The estimated number of deaths a year as a result of climate-related natural disasters.
- 157 – The number of countries that are members of the Ramsar Convention on Wetlands.
- 19 – The number of megacities with more than ten million inhabitants.
- 25% – The estimated percentage of people in developing countries who buy their drinking water from private vendors.
- 9 billion – The estimated number of people in the world by 2050, increasing competition for scarce water resources.
- 263 – The number of international shared river basins. Over 45% of the land surface of the world is covered by basins that are shared by more than one nation.
- 13 – The number of river basins worldwide that are shared by between five and eight riparian nations.
- 1 831 – The number of interactions on transboundary basins (both conflictual and cooperative) over the last 50 years.
- 10% – The estimated percentage of the world’s irrigated lands that have been damaged by waterlogging and salinisation because of poor drainage and irrigation practices.
- 70% – The average percentage of industrial waste dumped untreated in developing countries’ water resources every year.
- 60% – The percentage of the world’s 227 largest rivers that have been severely fragmented by dams, diversions and canals.
- 12% – The average annual growth of the world’s bottled water industry.
- 1 billion – The number of people who rely on fish as their main or sole source of protein.
- 6 – The number of fish species in the world that have become extinct since the 1970s.
- 15 hours – The average time women in developing countries spend collecting water every week.
African water figures
- 9% – Africa’s share of global water resources.
- 4% – The percentage of renewable water resources that Africa uses.
- 1 200 – Estimated number of dams in Africa. Hundreds more are under construction or being planned.
- 68 800 km2 – The surface area of Lake Victoria, the world’s second-largest freshwater lake and the largest in Africa.
- 70% – The percentage of Africa’s urban population who stay in slum areas. It is estimated that more than 1,6 billion Africans will be staying in informal urban settlements by 2020.
- 58% – The percentage of Africa’s population that has access to safe drinking water.
- 40 000 – The work hours lost every year to the need to fetch drinking water.
- 20 kg – The average weight of water that women and children carry (mostly on their heads) in Africa and Asia. This is equivalent to the permitted airport luggage.
- 200 – The estimated number of fish species wiped out in Lake Victoria following the introduction
South African water figures
- 500 mm – The average annual rainfall of South Africa.
- 49 billion m3 – South Africa’s average annual mean annual runoff.
- 21% – The percentage of South Africa that receives less than 200 mm rain a year.
- 746 m3 – The quantity of water stored per person.
- 3,69 – The size of the average South African household, down from 4,48 ten years ago.
- 13% – The contribution of groundwater to bulk water supply in South Africa.
- 88% – The percentage of households who had access to potable water in 2008.
- 2% – The percentage of South Africa’s water used by the power generation sector.
- 19 500 t – The amount of medicinal plant material provided annually by South African wetlands.
- 50% – The percentage of wetlands lost due to impacts such as agriculture and urban sprawl.
- 250 – The estimated number of estuaries in South Africa.
- R100-million – The estimated worth of the existing aquaculture facilities in the country. Most of them are dormant, with some falling into disrepair.
1,3 million ha – The land under irrigation in South Africa.
Municipal water figures
- 178 million kl – The water consumed every year in Tshwane.
- 97% – The percentage of residents in Tshwane who have access to tap water within 200 m of their homes.
- 222 – The number of informal settlements around Cape Town.
- 11 million – The number of people supplied with tap water from Rand Water.
- 11 Ml – The size of Rand Water’s largest reservoir, Libanon. The water utility has a total of 47 reservoirs.
- 98% – The number of people in Johannesburg with a reliable water supply.
- 3 500 – The number of sewage blockages experienced monthly by Johannesburg Water.
- 37 – The estimated number of settlements believed to be illegally situated on top of Rand Water’s bulk water pipes.
- 87 – The number of municipalities that do not have access to in-house engineers.
- 3,3 – The average number of blockages per kilometer of sewer pipe a year experienced by South African municipalities. This is ten times the international average.
- 780 Ml – The volume of water Umgeni Water, in KwaZulu-Natal, serves its 400 000 customers daily.
- 240 – The number of reservoirs under Umgeni Water’s jurisdiction.
- 3 – The number of river systems of strategic importance to eThekwini Municipality (Durban) that are still in a natural state.
General sanitation figures
- 10 million – The number of viruses contained in one gram of faeces.
World sanitation figures
- 40% – The percentage of the world’s population without basic sanitation.
- 10% – The percentage of the world’s crops being irrigated with sewage effluent, often untreated.
African sanitation figures
- 90% – The average percentage of global cholera cases stem from Africa every year.
South African sanitation figures
- 16 000 – The average number of people that die in South Africa every year from diarrheal diseases.
- 73% – The percentage of households who have access to at least basic sanitation.
- 51 – The number of schools in South Africa with no sanitation.
- 986 – The estimated number of sewage treatment plants in South Africa.