11 iclei / nmbm drought / flooding workshop water & sanitation b.j. martin 25 september 2013
TRANSCRIPT
11
ICLEI / NMBM
DROUGHT / FLOODING WORKSHOP
WATER & SANITATION
B.J. Martin
25 September 2013
22
CONTENTS
1. Climate Change2. Water Supply System3. Rainfall 4. Dam Storage5. Water Consumption6. Affects of Climate Change 7. Climate Change Mitigation8. Conclusion
33
When did climate change start?
Fact:
1. NMBM has a drought every 4 years over at least the last 20 yrs!
2. Every drought is broken by a flood or heavy rainfall.
3. Any persistent rain appears to be causing flooding!
1. CLIMATE CHANGE
44
2. WATER SUPPLY SYSTEM
55
2. WATER SUPPLY SYSTEM cont.
77
3. RAINFALL
8
9
1010
RAINFALL
1111
4. DAM STORAGE
1212
4. DAM STORAGE cont…
1414
5. WATER CONSUMPTION
8,6 %
1515
DEMAND VERSUS YIELD
1616
6. AFFECTS OF CLIMATE CHANGE Drought / flood cycles occurs regularly.
Drought / flood future: No rain periods will be more prolonged!
Rainfall period shorter & more intense!
Will our water sources be sufficient?
Affects of El Nino & La Nino!
Urbanisation creates greater impact on same water sources.
Housing Programme (80 000 units).
Economic growth
1717
7. CLIMATE CHANGE MITIGATION Water Master Plan:
NCLLS: water from different catchment (R770M)
Recycling of wastewater (R1,5 Billion)
Industrial use
Indirect potable use
WC/WDM (R57M pa)
NRW – leak detection etc.
Water Saving Awareness Campaign.
WC/WDM must be an ongoing programme.
Groundwater (R150)
Desalination (R1 Billion)
New infrastructure to support development.
1818
7. CLIMATE CHANGE MITIGATION cont…
Sanitation Master Plan: Upgrading of 6 wastewater treatment works (R1.6 Billion):
Energy efficiency
Energy abstraction
Rehabilitation of reticulation network:
Reduce ingress of stormwater
New infrastructure to support development
Rehabilitation of pump stations.
1919
7. CLIMATE CHANGE MITIGATION cont…
Design intervention: Energy Efficiency:
Operational Efficiency.
Equipment efficiency.
Water & Wastewater Treatment Process optimisation.
Water Services By Law:
House designs: Rain water harvesting
Township layout designs: Strom water mitigation
2020
8. CONCLUSIONS
Climate change affects:
Water availability Future use of water WC/WDM as a daily practice Reuse of water Water & Sanitation tariffs Efficient use of electricity Domestic & industrial consumption of services Town planning
2121
Thank You
“Keep it flowing in the pipe”