Water Conservation and Water Demand Management Progress with the Strategy Implementation

1. Water Conservation and Water Demand ManagementProgress with the Strategy Implementation 16 September 2010

2. Background • WC /WDM Strategy • CCT commitment to implementation • CCT 1st metro in SA to develop and implement • CCT only metro in SA with fully dedicated team for WDM • 10 year plan (2006-2016) • 5 specific goals • Wants to save 90 million m3/a by 2016/17 • Critical component of WC Water Supply Scheme • DWA wants to know

3. Background • CCT made an undertaking(pg 68 of Strategy document) “CCT will commit over the next five years to implementing and monitoring a comprehensive WC/WDM strategy. In such a time no decision should be taken regarding any further water augmentation scheme in order to verify the full potential of WC/WDM. After five years the full impact and potential of the WC/WDM must be clearly demonstrated by CCT and re-evaluated. All assumptions made in the current analysis on the role of WC/WDM will be tested and adequately researched.” This report reflects the pro-active approach of CCT in monitoring and re-evaluating the strategy after 3 years of implementation

4. Background 5 Strategy Goals

5. Progress Summary Why measure progress? • Need to measure impact on WDM • DWA – if only achieving 50% success then will need new augmentation by 2015 • If not achieving need to understand why not • Need to know if re-alignment of Strategy is needed

6. Progress Summary What has been done? • Pressure management successful in 13 settlements including pressure reduction devices for 49 schools • 1693 consumer meters audited • 1775 meters fitted with automated meter reading devices • 20 574 consumer meters replaced • 17 998 consumer meters re-located & fixed • 70 652 water connection leaks fixed • Added 95 more treated effluent users whichaccounts for 80.5Ml/d of treated effluent use.

7. Progress Summary What has been done? (cont) • More than 50 000 households visited with Integrated Leaks Repair Project • 341 Caretakers trained to date • 41 Schools visited and leaks repaired • 160 Hlonipha Amanzi workshops with 14 813 participants • Water By-laws awareness campaigning – 5 workshops, 12 shopping mall promotions, Industry and commerce interventions

8. Budget & Expenditure

9. Budget & Expenditure

10. Budget & Expenditure

11. Has the successful implementation of these projects and initiatives resulted in the desired reduction of water demand and losses? To answer the question one needs to do an assessment of water savings and growth projections

12. Savings Realised • Impact of the Strategy depends on: • The actual savings realised through the Strategy • Including abating demand growth • Unconstrained growth in water demand • What demand would have been if we have done

13. Savings Realised

14. Demand Projections

15. Demand Projections WC/WDM Strategy Table 10-6

16. Demand Projections

17. Demand Projections

18. Achievement of Targets

19. Achievement of Targets: Goal A-NRW

20. Achievement of Targets: Goal A-NRW

21. IWA Balance 2009/10: Units Ml/day

22. Achievement of Targets: Goal A-NRW

23. Achievement of Targets: Goal B-Wastage Reducing wastage to less than 2% of demand No data to measure savings…

24. Achievement of Targets: Goal E-Reducing Growth Rate

25. Achievement of Targets: Goals C & D Qualitative targets requiring a qualitative assessment

26. Achievement of Targets How accurate are the assumptions of the Strategy? Most significant findings: • Population growth rate used might be too low (1.61% (CCT) vs. 3.49% (StatsSA) • Use of uniform cost for unit leakage can be improved

27. Achievement of Targets Review of Overall Water Balance

28. Conclusion • CCT has done what the Strategy said and more in the past three years and needs to continue with similar monitoring and evaluation processes.  • As expected significant savings have realised and projects and actions re WC/WDM need to continue with even more resources committed. • Concern identified– demand growth still higher than expected • 2 questions that need answers:

29. Conclusion Will the anticipated savings of the WC/WDM strategy be achieved? “Yes”, on the savings that have been verified and “possibly” on savings yet to be verified

30. Conclusion Will the implementation of the WC/WDM strategy result in the desired reduction in water demand? “YES” if the strategy is re-aligned and even more support is given to achieve this

31. Way Forward – 5 Steps • STEP 1: Accuracy of bulk meters needs to be verified and confidence intervals given • STEP 2: Report NRW according to IWA Water Balance. Improve accuracy of estimated components of the IWA water balance • STEP 3: Understand why the growth rate in potable water demand so much higher than expected. Define (and quantify if possible) parameters influencing demand growth.

32. Way Forward – 5 Steps • STEP 4: Revise projected growth demand and re-align strategy targeted savings. Involves extensive resource planning . Do cost-benefit model that answers augmentation planning objectives optimising cost-benefit options. Revise the current method of unit demand reduction for unit cost. • STEP 5: Establish annual independent monitoring and assessment of strategy target achievements, and align it with the DWA toolkit

33. THANK YOU! ANY QUESTIONS?