DROUGHT CRISIS PRESENTATION Cllr Xanthea Limberg 29 November 2017
ANNUAL MAJOR DAM LEVELS All figures are for 25 September for each year
BETWEEN 2010 AND 2015, 130 MEGACITIES WERE HIT BY DROUGHT DISASTERS Source: Institute of Water Policy at Lee Kuan Yew School of Public Policy, Singapore
Critical Water Shortage Disaster Plan - Phases Phase 2 Phase 1 Disaster Phase 3 Preservation Restrictions Full-scale disaster Restrictions ‘Day Zero’ implementation or (rationing) 4
Phase 1: Preservation Restrictions (current phase – rationing) Purpose – To avoid escalation to Phase 2: Disaster Restrictions Water rationing through limiting supply and advanced pressure management • which severely limits available water supply in the system per day Some areas will experience short periods of limited to no water supply • Critical services, such as clinics and hospitals, will be largely unaffected • Definitive timetables of the outages will not be provided, as the water systems • need to be managed flexibly to avoid damage to critical infrastructure Intensified installation of water management devices to limit the consumption • of users who are exceeding the water restriction levels 5 Critical Water Shortages Disaster Plan
Phase 2: Disaster Restrictions Purpose – Avoid escalation to Phase 3 (Full-scale disaster implementation) Water rationing aimed at maintaining human life and critical services. • City will more actively assume control over the daily water supply available to • households and businesses. Many households and businesses will be unable to access drinking water in • their homes and places of work Water collection sites to be established across the city • Strategic commercial areas, high-density areas with significant risk of • increased burden of disease, and critical services, where possible, will continue to receive drinking water through normal channels The City’s law enforcement and policing resources, as well as resources from • intergovernmental partners, will be deployed to ensure that general safety is maintained. Maintenance of the sewage system – infrastructure and health considerations • 6 Critical Water Shortages Disaster Plan
Phase 3: Full-scale disaster implementation Purpose - Minimise impact on human life, dignity and property Extreme scenario – occurs if the Western Cape Water Supply System no longer • has surface water supply which the City can access Can be avoided with progressive rationing in phases 1 and 2. • Necessary that the City and its residents and stakeholders plan for such a • situation Limited drinking water supplies sourced within the city • Households and businesses will be unable to access drinking water in their • homes and places of work Drinking water will be distributed, supplemented by bottled water, to residents • through water distribution points Critical services dependent on reticulation supply will be significantly reduced • The City’s law enforcement and policing resources, as well resources from • intergovernmental partners, will be deployed to ensure that general safety is maintained. 7
WHAT WE WANT TO AVOID
WHAT WE WANT TO AVOID
High level strategy way forward • Bring online up to 500Ml/day of City of new non-surface water • Provide tools and messaging to Cape Town assist citizens and sectors to reduce water use • Doing everything possible to Citizens reduce water consumption collectively to 500Ml/day and Sectors • Advocate for visitors to our city to join the saving efforts
EMERGENCY PROGRAMME: TECHNICAL PROJECT LIST Emergency Project description: Technical project list New water already augmented • Oranjezicht spring ~2Ml Original Emergency Programme Emergency Programme Volume • Atlantis increased by 5Ml (Ml) J Desalination Containerised Land Based Hout Bay 4 7 Projects, funded and confirmed: Granger Bay 8 Red Hill/Dido Valley 2 • Strandfontein temporary desalination (7) Strandfontein 7 • Monwabisi temporary desalination (7) Monwabisi 7 • V&A Waterfront desalination (2) Harmony Park 8 • Cape Town Harbour land based desalination (120) Cape Town Harbour 50 Universal Sites x 3 52 • Atlantis Aquifers (25) V&A Waterfront 2 • Cape Flats Aquifer (25) Ships and barges • Zandvliet Water Re-Use (10) Cape Town Harbour (Barge) 50 Gordons Bay Ship/Barge 120 Cape Town Harbour (Ship) 50 Water Reclamation Zandvliet WWTW 10 12 further projects Cape Flats WWTW 10 • are well advanced and ready to proceed if Macassar WWTW 30 and when required Ground Water Abstraction Atlantis & Silverstroom Acquifers 25 Cape Flats Aquifer 25 Cape Peninsula Aquifer 20 Hottentots-Holland Aquifer 20 TOTAL 500
Demand-side initiatives to drive consumption lower Restrictions • Education and awareness • Pressure management • Active leak control - detection & fixing • Water management devices – 2000 per week for highest users • Water meter management • Treated effluent re-use •
WATER CONSUMPTION 2016/17
LEVEL 5 WATER RESTRICTIONS CONSUMPTION PER PERSON 87 litres or less per person per day wherever you are : home, work, school, etc. LIMIT FOR INDIVIDUAL Residential units exceeding 20 kilolitres per month will be fined RESIDENTIAL UNITS Reduce consumption by 20% compared to previous year. Properties exceeding COMMERCIAL PROPERTIES this will be fined . IRRIGATION WITH MUNICIPAL Prohibited DRINKING WATER IRRIGATION WITH BOREHOLE / Restricted WELLPOINT WATER BATHROOM Flushing toilets with non-drinking water (e.g. greywater / rainwater) encouraged WATER FEATURES Use of municipal drinking water prohibited SWIMMING POOLS (public and Top-up, filling or refilling with drinking water prohibited private) Use of portable play pools prohibited WASHING VEHICLES (privately or Prohibited with municipal drinking water at a formal/informal car wash) Operation of spray parks prohibited FACILITIES No new landscaping or sports fields may be established, except if irrigated only with non-drinking water INDIGENT WATER ALLOCATION Still applies
WATER MANAGEMENT DEVICES A WMD replaces a standard water meter and is programmed to provide a daily allocation to use on your property. Switches on at a fixed time each morning • e.g. 4 am. Restricts to 350 litres a day (10.5 kilolitres a • month) – although a different amount can be agreed with City. Switches off when the household has used its • daily water quota. Resets next morning to release daily amount. • Any amount not used is carried over to the • next day during that calendar month. Currently being installed on a mass scale
WATER PRESSURE MANAGEMENT - Decreasing water pressure slows the rate at which water runs from taps, protects the system from pipe bursts , and reduces water losses due to leaks - The City has gradually been reducing water pressure in a synchronised manner over the past few months - Switching water on and off is not an easy task, as when the pipes are empty it takes time to fill them up again and the risks of pipe bursts increases - Manage your own water pressure by locating and adjusting your property’s stopcock
Reduce your water flow. Please SAVE where you can. The stopcock on your property
What does 87 l per day mean to you? =
HOW TO CHECK FOR LEAKS ON YOUR PROPERTY
3 SIMPLE TESTS FOR A TOILET LEAK
RESOURCES Resources available for download from City’s website. http://cct.gov.za/0byva POSTERS: How Far Can 87 Litres a Day Go? • Find and Fix Leaks (Eng, Afr, Xho) • Top Ways to Save Water Indoors (Eng, Afr, Xho) • Level 5 Overview (Eng, Afr, Xho) • Level 5 Guidelines (Complete) • Water Crisis Warning red poster • VIDEOS: What does 87 litres per day look like? • How to reduce your flow at home through • your stopcock How to fit a low-flow shower head • OTHER: Offline Water Use Calculator – zipped • New Normal’ presentation • As material is made available the resource packs will be updated.
Calculate your daily water usage http://bit.ly/ThinkWaterCalculatorCT
RESOURCES As material is made available the resource packs will be updated.
PLUMBING CHECKLIST
THE OPPORTUNITY FOR YOU City currently spending R700m + in 3 years on private sector plumbers, and this • unlikely to reduce in next few years Huge opportunity in private sector - homes and businesses etc. For example: • Fixing leaks – Installing efficient plumbing fixtures & fittings – Alternative water installations – Dealing with low pressure and intermittent supply. Commercial and high rise – buildings need to ensure pumping capacity and sufficient storage. City’s Water Bylaw stipulates water storage requirements (for purposes other than fire- fighting or air conditioning) Better water management generally in businesses, education institutions and – sports/ other clubs, places of worship etc. Some being sponsored e.g. Shoprite sponsoring leak fixing and water management in 100 schools and other corporates also sponsoring more, through the Dropula/ Big Splash initiative through Cape Talk radio. Huge opportunity, but responsible installation needed please. See alternative water • installation guidelines. Sarah Rushmere to present on that bit later.
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