WATER RESILIENCE PROGRAMME: January 2018
The current drought is an unprecedented situation. Getting through it in 2018 requires that water use be greatly reduced by households, agriculture, commerce and industry alike.
50 FOR 150 If we all use 50 litres for 150 days, we have a chance of making it to the next rainy season, without having to turn off the taps. Don t wait for Level 6b water restrictions, to reduce your use.
AUGMENTATION & DEMAND MANAGEMENT
Monwabisi desalination project, 22 January 2018
AUGMENTATION The City of Cape Town has been working towards a diversified supply for some time, but due to the expense of options other than surface water, the projects have progressed to pilot stage, rather than production. The full augmentation plan runs until June 2022. Short-term, temporary desalination (16 MLD) Groundwater abstraction (peak at 150 MLD) Springs Water re-use Water transfers Permanent desalination
TYPE LOCATION MLD FIRST WATER FULL PRODUCTION Short-term, temporary desalination Strandfontein 7 March 2018 May 2018 Monwabisi 7 March 2018 May 2018 V&A Waterfront 12 March 2018 May 2018 Groundwater abstraction Cape Flats aquifer 80 May 2018 June 2018 Atlantis aquifer 20 May 2018 October 2018 TMG aquifer 40 February 2018 June 2019 Springs Newlands Albion spring 3 In operation Oranjezicht 1 In operation Water re-use Zandvliet 10-50 June 2018 December 2021 Cape Flats 10-75 June 2018 December 2021 Macassar 20 June 2019 Potsdam 10 June 2019 Ahtlone 75 December 2021 Permanent desalination Koeberg (pilot underway)
DEMAND MANAGEMENT To manage daily demand requires that each person should no more than the defined volume per day, whether they are at home, at work or elsewhere. Reaching the overall demand target is only possible if individual use is curtailed. Water restrictions and punitive tariffs: Level 6b will be in effect from 1 February with a target of 450 MLD, with a maximum of 50 litres pp/day. Water conservation Leak management: response times & repair, including repair for indigent households Pipe replacement District metering and zoning Pressure reduction Water Management Devices and meter management Adaptation Education, awareness and behaviour change Communication campaigns Awarded C40 Award for Adaptation in 2015 for Water Conservation and Demand Management
Water Treated per year (million m 3 ) Population (millions) EFFECTIVENESS OF WCDM 2000 TO PRESENT 700 600 500 400 300 200 100 Introduction of WCDM Programme 6,0 5,0 4,0 3,0 2,0 1,0 0 0,0 1950 1960 1970 1980 1990 2000 2010 2020 Water Treated 4.0% growth Population Expon. (Population) Water demand growth delinked from population growth Current water demand lower than 20 years ago population increased by 1 million
TREATED EFFLUENT RE-USE FOR INDUSTRY More than 200 users have permanent connections More than 70 Industries are collecting treated effluent at WWTW and standpipe points Mostly used for irrigation and industrial purposes Golf courses City Parks Schools Farmers Industries etc. City Departments
Jun-12 Sep-12 Dec-12 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Jun-17 Sep-17 Dec-17 Mar-18 Jun-18 Percentage TREATED EFFLUENT RE-USE 9,0% 8,0% % Treated Effluent Reused 7,0% 6,0% 5,0% 4,0% 3,0% % Reused
EDUCATION AND AWARENESS Intensified education and awareness campaign EPWP workers doing door-to-door campaigns currently 393 EPWP workers on this project. Will rise to 820 EPWP workers in coming weeks. Engagements with: Car washes Schools Commuters at transport interchanges Hospitality industry Hair salons Swimming pool and spa sector Business forum Nurseries Government facilities
WATER LOSSES METRO DWS REPORT (2013) SALGA s MBI (2015) Water Loss % Water Loss % City of Cape Town 16 * 14.7 City of Johannesburg 36.5 24.8 ethekwini 35.3 38.2 Ekurhuleni 31.8 33.9 Tshwane 22.9 22.4 Nelson Mandela Bay 32.4 38.2 Buffalo City 37.1 38 Mangaung 35.7 28.3 Msunduzi 32.9 Average of above 30.9 30.2 DWS & MBI Average 29.7 27.9 National average for water losses as per the DWS Strategic Overview of the Water Sector in South Africa 2017 puts national average for water loss across municipalities at 36%. *Cape Town water loss currently at 16%
PRESSURE MANAGEMENT More than 116 pressure management zones have been created Design underway for further 29 pressures management zones Throttling of bulk water valves is being done where benefits are identified These zones are being optimised during this current drought They are spread throughout the City and no specific areas are targeted High lying areas likely to experience most reduced pressure
ACTIVE DETECTION & REPAIRS Dedicated leak detection team (Includes EPWP and Rand Water graduates) Creation of 75 new positions to reduce response times to burst pipes and meter faults / leaks. Injection of R22m into this programme this year to improve response time Vandalized hydrants and dumping in chambers Leak Detection in progress
PIPE REPLACEMENT About 27 400m of potable water pipelines were replaced in 2016/17 financial year
Jul-06 Nov-06 Mar-07 Jul-07 Nov-07 Mar-08 Jul-08 Nov-08 Mar-09 Jul-09 Nov-09 Mar-10 Jul-10 Nov-10 Mar-11 Jul-11 Nov-11 Mar-12 Jul-12 Nov-12 Mar-13 Jul-13 Nov-13 Mar-14 Jul-14 Nov-14 Mar-15 Jul-15 Nov-15 Mar-16 Jul-16 Nov-16 Mar-17 Jul-17 Nov-17 Number of Bursts per Months PIPE BURST STATISTICS 900 800 BURST WATER MAINS 80 70 700 600 500 400 300 200 100 0 60 50 40 30 20 10 0 Bursts / 100km / year Burst per month Bursts/100km
18 WATER MANAGEMENT DEVICES Up until end of 2016/2017 220 000 WMDs had been installed Approximately 22 000 WMDs installed since mid-september 2017 focused on high water users Now being installed at rate of more than 2000 per week As of January all domestic properties using more than 10500kl/m to be fitted
ENFORCEMENT The water inspectorate continues to issue fines for all water restriction contraventions Most common contraventions: Washing of vehicles Wasting of water Hosing down of paved surfaces Dampening of building materials 18 permanent water inspectors 20 EPWP law enforcement officers Additional staff being recruited
Thank You