1. APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES
Ir. Zainuddin Bin Md Ghazali
Chief Operating Officer
Ranhill Water Services Sdn Bhd
83, Matang Building, Jalan Langkasuka,
80350 Johor Bahru, Malaysia.
Tel:
HP:
Website:

2. NRW = System Input – Water billed
What is NRW?
Non Revenue Water definition is quantity of water produced from treatment plant not billed to customer
 NRW = System Input – Water billed

3. * A measuring scale for Water Supply company efficiency
The formula if
P =
System Input
, C =
Billed Consumption P - C = %
NRW P C P
* A measuring scale for Water Supply company efficiency

5. Infrastructure Leakage Index (ILI)
Calculation for ILI is;
CARL (Current Amount Real Loses)
UARL (Un-Avoidable Real Loses)
CARL = physical loses includes overflow, burst, and leaks
UARL = (18 x Lm Nc + 25 Lp) Pr
Pr = Pressure. Avg retic and distr mains = 3.2 Bar.
Lm = Pipe length from GIS in meter.
Nc = Number of Billings connections.
Lp = Private length, or avg communication pipe in meter.

6. PHYSICAL LOSSES TARGET MATRIX

7. Physical Loss Performance: Categories; Guide to Further ActionB C D
Good: further loss reduction may be uneconomic; careful analysis cost effective improvements.
Potential for marked improvements: Consider pressure management, better active leakage practices and better maintenance.
Poor: Tolerable only if water is plentiful and cheap; even then intensify NRW reduction efforts.
Terrible: Inefficient use of resources; NRW reduction programs imperative and priority.

8. Why NRW is very important to any water operator?
To fully optimize usage of treated water produced by consumers
To optimize revenue
Increase operational efficiency

9. Water Asset Registration DMA establishment Network Modeling
Where do GIS functions benefit NRW Management?
In areas of:
Water Asset Registration
DMA establishment
Network Modeling
Planning & Operation

10. Water Asset Registration
Where do GIS functions benefit NRW Management?
Water Asset Registration

11. Asset Registration : eliminate OUTDATED AND UNMAINTAINED DATA
Created once in Excel and no update after that
TACIT

12. JOHOR DIGITAL MAP & PIPELINES

13. ASSET MEASUREMENT
Source : SAJH-GIS (Apr 2013)

14. Asset update progress over five (5) years
Measurement
Unit
Year 2006
Year 2010
% increase
Pipe Length Km
15,114.20
19,191.12
27%
Valve
39,519
54,207
37%
Hydrant
24,033
36,117
50%
Air Valve
8,393
12,537
49%
Double Air Valve
4,848
13,953
188%
Water Sampling Point
861
933 8%
End Cap
4,623
6,514
41%
Customer supply point
46,164
501,103
985%
* Source of data courtesy of SAJ Holdings Sdn Bhd

15. Single point of reporting for water assets
GIS for Asset Registration
Single point of reporting for water assets
Avoid outdated and unmaintained data

16. Where do GIS functions benefit NRW reduction?
DMA Establishment

17. GIS for DMA establishment
DMZ – BW16
Network Tracing to locate valves to be boundary valves for DMA

18. GIS for DMA establishment
DMZ polygon

19. Improved DMA boundaries and data value
* Source of data courtesy of SAJ Holdings Sdn Bhd

20. DMZ Conflict Inspector (DMZ-CI)
Conflict output

21. Result – better analysis for NRW by DMA (case on zero variance in number of connections
* Source of data courtesy of SAJ Holdings Sdn Bhd

22. Result – better analysis for NRW by DMA on commercial losses
* Source of data courtesy of SAJ Holdings Sdn Bhd

23. To provide scale-down NRW analysis by DMA
GIS for DMA establishment
To provide scale-down NRW analysis by DMA
Improve DMA boundary and data value
Better analysis on commercial losses
Leakage percentage and pressure management

24. Where do GIS functions benefit NRW reduction?
Network Modeling

25. Hydraulic Modeling : tedious work in Excel and plotting in hydraulic software
Create in Excel and transfer to Model

26. Data transfer from GIS to Hydraulic Modeling Software

27. Laid on Google map

28. Result: Analysis on DMA pressure survey (High Pressure)

29. Avoid redrawing of data Data transfer from GIS to Modeling software
GIS for Network Modeling
Avoid redrawing of data
Data transfer from GIS to Modeling software
Model can be shown as layer-lapping with GIS map/Google map

30. Where do GIS functions benefit NRW reduction?
Planning & Operation

31. Pipe burst record in GIS
GIS for Planning of Asset Replacement
GPS to locate burst location and record in GIS
Burst location
Burst Total

32. - for pipe replacement program
GIS for Planning of Asset Replacement
Record of Asset
Burst records
- for pipe replacement program

33. Planned Shut Down & Trace to Affected Customers Application

34. Record of customer affected by water disruption from billing system

35. GIS for DMA Maintenance
Opening/closing of valve: better management on service interruption during DMZ maintenance
- ZPT
- Step test

36. Challenges & lessons learned
Be achieved with:
High commitment from all staffs in the company – from top to bottom
Collaboration & Co-operations
Willing to improve
Rapid development environments, ease of use, product reliability, and vendor stability are among key contributors to selecting integrated platform options
Customer service/stakeholders’ interests must be the key indicator – fulfill the needs and efficient service

37. THANK YOU