DROUGHT CRISIS PRESENTATION Cllr Xanthea Limberg 29 November 2017 - - PowerPoint PPT Presentation

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

4

Phase 1 Preservation Restrictions (rationing) Phase 2 Disaster Restrictions ‘Day Zero’ Phase 3 Full-scale disaster implementation or

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
• f users who are exceeding the water restriction levels

Critical Water Shortages Disaster Plan

5

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

Critical Water Shortages Disaster Plan

6

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

new non-surface water

• Provide tools and messaging to

assist citizens and sectors to reduce water use

City of Cape Town

• Doing everything possible to

reduce water consumption collectively to 500Ml/day

• Advocate for visitors to our city to

join the saving efforts

Citizens and Sectors

Emergency Project description: Technical project list

EMERGENCY PROGRAMME: TECHNICAL PROJECT LIST

7 Projects, funded and confirmed:

• Strandfontein temporary desalination (7)
• Monwabisi temporary desalination (7)
• V&A Waterfront desalination (2)
• Cape Town Harbour land based desalination (120)
• Atlantis Aquifers (25)
• Cape Flats Aquifer (25)
• Zandvliet Water Re-Use (10)

12 further projects

• are well advanced and ready to proceed if

and when required J Desalination Containerised Land Based Hout Bay 4 Granger Bay 8 Red Hill/Dido Valley 2 Strandfontein 7 Monwabisi 7 Harmony Park 8 Cape Town Harbour 50 Universal Sites x 3 52 V&A Waterfront 2 Ships and barges Cape Town Harbour (Barge) 50 Gordons Bay Ship/Barge 120 Cape Town Harbour (Ship) 50 Water Reclamation Zandvliet WWTW 10 Cape Flats WWTW 10 Macassar WWTW 30 Ground Water Abstraction Atlantis & Silverstroom Acquifers 25 Cape Flats Aquifer 25 Cape Peninsula Aquifer 20 Hottentots-Holland Aquifer 20 500 TOTAL

Emergency Programme

Volume (Ml)

Original Emergency Programme

New water already augmented

• Oranjezicht spring ~2Ml
• Atlantis increased by 5Ml

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 Residential units exceeding 20 kilolitres per month will be fined COMMERCIAL PROPERTIES Reduce consumption by 20% compared to previous year. Properties exceeding this will be fined. IRRIGATION WITH MUNICIPAL DRINKING WATER Prohibited IRRIGATION WITH BOREHOLE / WELLPOINT WATER Restricted BATHROOM Flushing toilets with non-drinking water (e.g. greywater / rainwater) encouraged WATER FEATURES Use of municipal drinking water prohibited SWIMMING POOLS (public and private)  Top-up, filling or refilling with drinking water prohibited  Use of portable play pools prohibited WASHING VEHICLES (privately or at a formal/informal car wash) Prohibited with municipal drinking water FACILITIES  Operation of spray parks prohibited  No new landscaping or sports fields may be established, except if irrigated

• nly 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

• 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

WATER PRESSURE MANAGEMENT

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.

http://bit.ly/ThinkWaterCalculatorCT

Calculate your daily water usage

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.

TOGETHER WE CAN SURVIVE AND THRIVE IN THE ‘NEW NORMAL’

Day Zero already pushed

• ut to May 2018.

Let’s push it out further, together.

THANK YOU