Water Wise Watch
Transcription
Water Wise Watch
Water Wise Watch November 2015 Editor: Samanta Stelli “Do as much as you can to reduce the amount of water you use during this time of water shortages.” In this issue: • South Africa’s water current situation: DROUGHT • Understanding El Niño and its effect on South Africa’s weather. • Water Wise events. • What is geosmin? Water Wise Tip of the Month from Leslie Hoy “Replace worn washers in taps and toilets to prevent leaks and water wastage, especially during the current drought.” This month with Water Wise The news is buzzing with warnings about severe drought, water restrictions, water shortages, and the resultant knockon effects on farming and water supply in South Africa. Parts of the Free State and KwaZuluNatal provinces have been declared disaster areas due to a lack in rainfall. The Western Cape is experiencing its worst drought in 75 years. Although we have entered the rainy season in the eastern part of the country, the effects of the weather phenomenon known as El Niño has caused belownormal rainfall, and above-normal temperatures throughout most of the country. Both Tshwane and Johannesburg have been issued with warnings of possible water shortages, as a result of the current drought, the worst in the last 23 years. Rand Water has issued a statement advising residents of Pretoria and Johannesburg of possible localized problems with water supply, including low pressure and water shortages, due to high demand, low rainfall, and high temperature in those areas. Residents have been asked to use water sparingly at this time to prevent a potential water crisis. To read more, click here. Water Wise joins in World Migratory Bird Day celebrations at Marievale On 15 October 2015, the Department of Environmental Affairs (DEA), together with the Gauteng Department of Agricultural and Rural Development (GDARD) and BirdLife South Africa (BLSA) celebrated World Migratory Bird Day at the Marievale Bird Sanctuary in Nigel. Water Wise were invited to attend the event as key stakeholders as a result of an Memorandum of Agreement with GDARD which resulted in the retrofitting and upgrading the bird hides and facilities. In addition to this, Water Wise also developed educational posters which have been displayed in all the bird hides.The Chief Director: Sustainable Use of Environment, Mr Loyiso Mkwana, thanked Water Wise for their contribution. The wetland environment at Marievale allows for a range of bird species and other wildlife to inhabit the area throughout 1 Minister of Environmental Affairs, Edna Molewa. the year hence the need for the conservation of this site is crucial. It it is part of the Blesbokspruit Ramsar site and is also listed as an Important Bird Area (IBA). The celebration included a tour of the site with numerous school groups and community members. The message of conservation of birds and wetlands were emphasised, a message that aligns well with Water Wise and will no doubt be encouraged. Better, Smarter, Greener Water in the News Special Edition News: South African Drought 2015/2016 Minister address the wastage of water in SA The Minister for Water and Sanitation, Nomvula Mokonyane, has told Parliament that Joburg lost enough water between July 2013 and June 2014 to fill up Hartbeespoort Dam – and still have spare. The next war, the experts say, will be fought not over national pride (necessarily), not over oil or other mineral resources, but over water – that scarce resource that so many of us take for granted. North West, Free State and the Northern Cape Provinces are currently the hardest hit, and the Depertment of Water and Sanitation is urging people to use water sparingly. Reports from KwaZulu-Natal indicate that there has been up to R 500 million worth of damage so far. The situation, which is crippling farmers in the area, has been described as devastating, as up to 50% of water use has been restricted in certain municipalities, and dam levels drop to below 25% capacity. Saving water if you live in a sectional title or complex especially as we enter a severe drought in South Africa this summer seaosn. For example, ask garden services and the body corporate responsible for maintaining the landscapes to water early in the afternoon or late in the evening. For more hints and tips, click here. If you want to attempt fracking, you will need permission The Minister of water and sanitation has declared fracking, or hydraulic fracturing, a controlled activity, as per the National Water Act 36 (1998). To be involved in this activity, you will be required to obtain permission from the Department. Read more here. South Africans risk starvation by threat of severe drought Reports indicate that over half a million people in KwaZula-Natal, and more than 90 000 Limpopo residents are facing a water crisis as a result of the drought we are currently experiencing across the country. KwaZulu-Natal, Limpopo, Property24 have put together a list of methods that those living in sectional titles can employ to save water, Water Wise Weather The El Niño weather phenomenon has been cited as the reason for South Africa’s current drought, which is compromising farmers, and causing potential water shortages throughout the country. How does El Niño affect South Africa? The southern part of Africa generally receives below-normal rainfall during El Niño years. El Niño does not always cause drought: even though most El Niño years have been associated with below-normal rainfall, the impact of it is often reduced by the sufficient groundwater and soil moisture content carried over from previous seasons. 2 Water Facts: • Dry and Warm October in review Parameter: 2014 2015 Min. Temp. (oC) 4.1 4.5 Max. Temp. (oC) 32.8 34.3 Average Temp. (oC) 18.9 21.6 Rainfall (mm) 77 21.8 Better, Smarter, Greener The amount of water that is wasted through leaking pipes, theft and bad billing in one year in Johanneburg could fill 87 743 Olympic-sized swimming pools. What is geosmin and how does it affect your water? Smelly water does not mean unhealthy water if the odour is caused by geosmin. Rand Water’s consumers may experience odours in the water during the summer months due to the presence of geosmin. The human nose is very sensitive to geosmin, detecting it at concentrations as low as 5 parts per trillion. Geosmin is a naturally occurring odour producing substance found in surface waters as a by-product of blue green algae. The intensity of these odours is directly related to the increased densities of blue-green algae normally occurring in the surface waters of the Vaal Dam during summer. The present problem is aggravated by the current sunny weather and high temperatures causing ideal growing conditions for algae and this together with the varying level of the dam results in the draw-off of surface waters containing high quantities of blue green algae. The odours are earthy or musty in character and are sometimes described as smelling Current Dam Capacities*: Vaal Dam: 55.9% Bloemhof Dam: 47.8% Grootdraai Dam: 67.5% Sterkfontein Dam: 97.6% Gariep Dam: 59.1% Vaal Barrage Dam: 97.2% Katse Dam: 71.0% like green mealies. These odours can be very persistent and are not effectively removed by conventional water purification processes. In view of the infrequent and usually short duration of the problem and the fact that this compound is not harmful to human health, it is Rand Water’s view that the high cost of removing this substance is not warranted at this stage. Rand Water, however, remains committed to supplying safe and aesthetically acceptable water and should our extensive water quality-monitoring programme indicate an increase in frequency and duration of these occurrences, the necessary steps will be taken to remedy the problem in due course. Remember, geosmin does not present a health risk. Visit www.reservior.co.za for further information on water quality in your area, or call Rand Water’s customer call centre at 0860 10 10 60. Water Wise Events Are you feeling the effects of long hours at work, a poor diet, and very little exercise? Modern living gives us lifestyle perks and convenience but it means that many of us are working longer hours, exercising less and eating a diet of nutrient deficient foods. As a high achiever and business driver, you may be living your life in an energy and time deficit. Many of us have become richer materially but the trade-off is more stress and less quality time for ourselves. Join the Green Business Platform this month, as they welcome Celynn Erasmus, a registered dietician and a full time professional speaker and writer. Celynn is passionate about helping busy people enhance their performance by managing *at time of writing 3 Better, Smarter, Greener fatigue and boosting energy levels. As a professional speaker, Celynn energizes local as well as international audiences and presents regularly in the UK. Celynn is Managing Director of NewCel Mobile Health The event will take place on 6 November at Thaba Eco Hotel, starting at 07:30 for 08:00. The charge is R 50 per person, which includes a light snack after the talk.For more information on this event, contact the SOJO Offices at: 011 493 7880 or info@sojo.co.za or visit www.klipsa.org.za. Click here for past events, talks and presentations. The El Niño weather phenomenon El Niño graphic courtesy of: Visit to an Ocean Planet CD ROM produced by TOPEX/Posiden Project NASA. Days to remember: 06 November: World Responsible Tourism Day 20 November: Universal Children’s Day 21 November World Fisheries Day 22 November: National Big Birding Day 28 November: Buy Nothing Day El Niño and La Niña are complex weather patterns resulting from variations in ocean temperatures in the Equatorial Pacific. El Niño and La Niña are opposite phases of what is known as the El Niño-Southern Oscillation (ENSO) cycle. The ENSO cycle is a scientific term that describes the fluctuations in temperature between the ocean and atmosphere in the east-central Equatorial Pacific. These deviations from normal surface temperatures can have large-scale impacts not only on ocean processes, but also on global weather and climate. El Niño episodes typically last nine to 12 months, but some prolonged events may last for years. While their frequency can be quite irregular, El Niño events occur on average every two to seven years. The presence of El Niño can significantly influence weather patterns, ocean conditions, and marine fisheries across large portions of the globe for an extended period of time. Developing countries dependent upon agriculture and fishing, particularly those bordering the Pacific Ocean, are the most affected. The first signs of an El Niño are a weakening of the Walker circulation or trade winds and strengthening of the Hadley circulation and may include: 1. 2. 3. 4. Rise in surface pressure over the Indian Ocean, Indonesia, and Australia Fall in air pressure over Tahiti and the rest of the central and eastern Pacific Ocean Trade winds in the south Pacific weaken or head east Warm air rises near Peru, causing rain in the northern Peruvian deserts For more, please visit: http://oceanservice.noaa.gov/facts/ninonina.html https://en.wikipedia.org/wiki/El_Ni%C3%B1o Do you have any interesting pictures of plants in your garden, or any comments or questions? If you do, please send them to us and we will include them in next month’s issue. We would love to hear from you! You can visit our website by going to www.randwater.co.za and clicking on the Water Wise logo. Alternatively, you can email us at waterwise@randwater.co.za or you can phone our call centre at 0860 10 10 60. 4 Better, Smarter, Greener Using less water in the home - preparing for drought conditions Water and Sanitation Minister, Nomvula Mokonyane, is encouraging South Africans to be more aware of their water usage and to use water sparingly. According to the Minister, climate change has exacerbated the drought situation in South Africa, which is thought to have been triggered by the latest El Niño weather event, and is worsened by South Africa’s semiarid climate and already water scarce state. Drought conditions are being experiences across the country due to prolonged lower-than-normal rainfall since the beginning of the year, and this has led to water shortages in a number of public water supply schemes or dams. So far, drought disaster has been declared in only two of the nine provinces, namely KwaZulu-Natal and Free State. As individuals there are many simple measures to use water wisely on a daily basis and not just in times of drought. Although each individuals water saving may be small, when added together the amount of water we can save is significant. -- Support projects that use reclaimed wastewater for irrigation and industrial uses. -- Washing dark clothes in cold water saves both on water and energy while it helps your clothes to keep their colours. -- Report broken pipes, open hydrants and errant sprinklers to the property owner or your water provider. -- Share water conservation tips with friends and neighbours. -- While staying in a hotel or even at home, consider reusing your towels. -- Have your plumber re-route your grey water to trees and gardens rather than letting it run into the sewer line. -- Install covers on pools and check for leaks around your pumps. -- When washing dishes by hand, don’t let the water run while rinsing. -- If your shower fills a 5 litre bucket in less than 20 seconds, replace the showerhead with a water-efficient model. -- Shorten your shower by a minute or two and you’ll save up to 600 litres per month. The following are some tips on how to be Water Wise in the home: -- Monitor your water bill for unusually high use. Your bill and water meter are tools that can help you discover leaks. -- We’re more likely to notice leaks indoors, but don’t forget to check outdoor faucets, sprinklers and hoses for leaks. -- When buying new appliances, consider those that offer cycle and load size adjustments. They’re more water and energy efficient. -- When you save water, you save money on your utility bills too. -- Insulate hot water pipes for more immediate hot water at the tap and for energy savings. -- Make suggestions to your employer about ways to save water and money at work. A family of four can use anything between 300 and 800 litres of water in the home per day. This is a very large amount considering that many people in the world use as little as 25 litres of water per person per day. It is entirely possible to conduct your daily tasks, such as cleaning, cooking, bathing, drinking and flushing toilets with only 2.5 buckets of water a day. Water Wise challenges every South African to use as little water a day as possible. Follow the 3 R’s of being Water Wise: • Reduce your daily water use. • Reuse water where possible. Most tap water can be used at least twice. • Repair leaking pipes, toilet cisterns and taps. Inspect your water meter and carry out a water audit to identify water that may be leaking without you knowing it. 5 Better, Smarter, Greener