Cape Town's Water Outlook
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TO SUBSCRIBE TO CAPE BUSINESS NEWS ISSN 1028-1215 SMS Subscribe to 31013 FOUNDED 1980 SA: R15.00 (Incl. VAT) MARCH 2018 Cape public Erosion control Drones in transport construction collapse? 4 Sustainable concrete 8 12 No longer a joke. solutions. What a buzz. Beach access a Cape Town’s water outlook reality for the n a recent interview with the Deputy Mayor, Alderman Ian Neilson, respon- disabled Isible for the coordination of crisis miti- gation measures, the editor was apprised of the current water situation and the status of both emergency and long term augmen- tation schemes to ensure water security. Cape Town and surrounding town’s wa- ter supply originates as rainwater runoff captured in 6 major dams. This system of dams also supplies agriculture and other urban areas. The current system is almost entirely dependent on rainfall. This complex system is managed by the ORD Motor Company Fund is national Department of Water and Sanita- partnering with environmental tion. Forganisation WESSA and the Na- About a third of the water in this system tional Council of and for Persons with is used by agriculture and 7% by other ur- Disabilities (NCDP) in South Africa to ban areas (smaller towns). make the dream of beach access a real- The consumption of the water used by ity for the physically disabled. the City of Cape Town (+/-63%) is shown As the philanthropic arm of Ford Mo- in the following pie chart. tor Company, the Ford Fund has pro- The National Department of Water and vided a grant of $10 000 (approximately Sanitation is responsible for planning and Both actions require ‘new water’ (sourc- ed to below 450Ml/day immediately due to R135 000) to assist WESSA’s innovative implementing water resources schemes to es) – a misnomer as water is neither created not meeting the 500Ml/day target. Blue Flag Amphibious Wheelchair Proj- meet water demand for cities, industries, or destroyed, but an understandable term So far, measures that produce incremen- ect. The funds will be used to purchase mining and agriculture. The Department in our situation. tal savings include: four specially designed wheelchairs that plans at a 1 in 50 year level of assurance. Augmentation measures include ground - Tariff Increases: estimated at 50Ml/day are capable of traversing soft beach sand This means that during droughts with a water extraction, wastewater reuse and de- by end of June 2018 and can be used in the water. severity of 1:50 years or more, restrictions salination. Each plays its part in the provi- - WMD (water management devices) in- A total of 45 South African beaches need to be imposed to reduce demand. The sion of extra supply but none on their own stallations: estimated at 10Ml/day by end of were awarded the prized Blue Flag sta- current drought is much more severe than is the panacea and must be combined ef- June 2018 tus for the 2016/2017 season by WESSA, a 1 in 50 drought event - in fact it’s a double fectively at various levels of practicability - Pressure Management; Targeting High which is the national operator of the re- whammy – estimated at being the worst in and viability. Consumers; Leak Repair: 32Ml/day (mid vered international Blue Flag eco-label more than 400 years. In the short term, ground water extrac- February to Oct 2018) for beaches, boats and marinas - a trust- Predicting rainfall patterns isn’t an exact tion and small scale package desalination - Build Programme ed symbol of quality that is awarded an- science so extensive use is made of statis- plants help to supplement supply but a ma- - 80% success on build programme deliv- nually, and is recognised by the World tical analysis and computer modelling to jor intervention in reducing demand is the ering an additional 120Mll/day by end Oct Tourism Organisation. provide the planners with insight. The next pressure reduction measures implemented 2018 In addition to meeting stringent cri- augmentation scheme for Cape Town was by the City and the imposition of usage teria for water quality, environmental planned for 2022/3 and is being accelerated limits on the general population, now at Augmentation management and education, the Blue by the national Department. This scheme level 6B. The ‘donation’ of 10 000 Ml from Augmentation schemes are a far more ex- Flag status includes a requirement for (augmentation of Voelvlei Dam) is unlikely the Grabouw farmers was much more sig- pensive source of water than runoff from universal access to these pristine beach- to be ready before 2021. nificant as it pushed Day Zero predictions rainfall. The volume of runoff cannot be es - both for able-bodied and physically While there are solid criticisms of the back by several weeks. easily augmented in short time periods disabled persons. delay of augmentation measures – not just Further measures are or will be put in (new or increased capacity dams) and is “Although some beaches across South here but in other parts of the country too place to reduce demand, including: anyway dependent upon rainfall patterns. Africa allow for persons with disabilities – especially since warnings were sounded • punitive drought tariffs Under poor rainfall conditions like 2017 to access the beach, they are often met by experts as long ago as 2005 – D Day has we would require augmentation of +/- with the struggle of getting onto the • demand management devices & flow been reached. 720Ml/day to match the volume of runoff. beach itself,” explains Robert Slater, of restrictors Despite all augmentation efforts, the sup- WESSA. The new plans • more aggressive pressure management ply scheme is vulnerable to poor rainfall. “WESSA is aiming to bridge this The City’s response to the crisis is two The cost per kl of water from other gap by providing four Blue Flag beach- pronged – manage the immediate situation While Cape Town has significantly re- sources varies considerably. The cost of es across the country with amphibious and try to avert Day Zero, while embark- duced its demand (measured as production bulk water, waste water and reticulation wheelchairs that allow people who rely ing on a longer term initiative that will from the treatment works), from a peak of on mobility devices such as wheel- safeguard water security for the foresee- 1 200Ml/day in 2015 down to below 600Ml/ Continued on P2 chairs to get onto the beach and into able future. day, a further reduction in demand is need- the water.” We stock a variety of stainless steel SECURITY FASTENERS best service | competitive price | high stock availability Stainless steel Security Fasteners 2 CBN March 2018 IN THIS ISSUE “What is happening in Cape Town could 10 Sustainable Water happen anywhere” 12 Building & Construction African Utility Week going ahead as planned despite water shortages “WHAT is happening water including invest- tern changes, recycling Town. “As a major workshop programme 18 Civil Engineering & in Cape Town could ment needed in water of water and waste wa- event in the City, Afri- that are CPD accred- happen anywhere” solutions by the public ter treatment, network can Utility Week plays ited, free to attend, says Paul Yillia, Guest and private sectors to infrastructure mainte- a crucial role in con- hands-on presenta- Infrastructure Research Scholar (Wa- enable universal ac- nance and demand side tributing towards the tions that take place in ter Programme) at the cess, water security management should all in-ward bound travel defined spaces on the International Institute and resilient societies. be top NATIONAL market,” says event di- exhibition floor. They 20 Food, Beverages & Wine for Applied Systems The strategic water priorities going for- rector Evan Schiff, “by discuss practical, day- Analysis in Austria. conference will also ward.” holding the event as to-day technical top- 22 Agri-Processing & “As population in cit- showcase how partner- The Sensus SA MD planned, African Util- ics, best practices and ies grow and economic ships, financial models adds: “it’s important ity Week will continue product solutions that activities increase, the and latest technologi- to not only have smart to support the Cape businesses, large power Supply Chain demand for water will cal advances can make metering. Smart me- Town economy as we users and utilities can continue to increase. the greatest impact in tering should be intel- cannot allow for there implement in their dai- If we now factor in cli- meeting Africa’s water ligent. How to make to be massive job losses ly operations. 24 Hydraulics & Pneumatics mate change and ex- demand. smart metering in- on top of a water con- treme weather events telligent and use it to strained situation.” such as prolonged heat Water situation should solve infrastructure, 26 Pipes, Tubes, Hoses & waves and droughts, all be top priority supply and demand Award-winning energy of this will put addi- issues is what we are platform Dates for Fittings tional pressure on wa- “We want utilities all about this year.” African ter availability both on to start thinking out The full interviews The 18th annual, the supply and demand of the box on water with Gerardt Viljoen multi-award winning Utility Week: 27 HVAC side. This not unique solutions, capabilities and Paul Yillia can be African Utility Week to Cape Town. Utili- and solutions,” says read on: http://www.af- will gather over 7000 ties worldwide should Gerardt P. Viljoen, rican-utility-week.com/ decision makers from Conference 28 Transport take the threats posed Managing Director of expertinterviews more than 80 countries and expo: by climate change Sensus SA and GM for to discuss the chal- 15-17 May 2018 much more seriously Sensus in Africa, an Event going ahead as lenges, solutions and and focus additional event sponsor and also planned despite water successes in the power, 29 IDZ Awards gala resources on adapta- a conference speaker.