This document discusses EPAL's efforts to reduce non-revenue water (NRW) within its distribution network in Lisbon, Portugal. It outlines EPAL's NRW situation and strategy, which aims to reduce NRW from 25% to less than 15% within 3 years. EPAL developed solutions like district metered areas, leak detection and repair, and data analysis software. A case study shows how interventions in one DMA recovered 1 million cubic meters per year, highlighting the benefits of integrating data analysis and active leak control. The conclusions emphasize that EPAL's approach has helped reduce NRW and energy consumption while bringing environmental, economic, and social benefits.

1. WONE
WATER OPTIMIZATION FOR NETWORK EFFICIENCY
APPLYING EFFECTIVETOOLS FOR REDUCING NON-REVENUE
WATERWITHIN A MAJORWATER UTILITY

2. © EPAL S.A. All Rights Reserved.
OUR GOAL IS EFFICIENCY
Water losses within distribution systems are a global problem, but
they must not been seen as inevitable.
EPAL, as a specialist in water distribution, has established itself as a
company with the ability to anticipate and resolve problems
associated with water losses.

3. © EPAL S.A. All Rights Reserved.
AGENDA
1. WHAT IS EPAL
2. NRW SITUATION & STRATEGY ADOPTED
3. SOLUTIONS DEVELOPED
4. CASE STUDY
5. CONCLUSIONS

4. © EPAL S.A. All Rights Reserved.
WHAT IS EPAL
Lisbon

5. © EPAL S.A. All Rights Reserved.
TODAY
WHAT IS EPAL
FROM 1868 - 145YEARS
BULK SUPPLY to around 2.5 million people in 34
municipalities in and around the Lisbon area
DIRECT SUPPLY to 350 000 domestic and commercial
customers within the City of Lisbon
Production capacity totals more than 1 000 000 M3/DAY
With 740 employees, EPAL is the largest water supplier
in Portugal with a net profit of €43 M AND a turnover
of €152M in 2011

6. © EPAL S.A. All Rights Reserved.
ETA de Asseiceira
OTA
ALENQUER
VALADA TEJO
LEZÍRIAS
ETA de Vale da Pedra
CASTELO DO BODE
PRODUCTION
& BULK SUPPLY SYSTEM
WITH ASSETS OVER €600M
2 WaterTreatment Plants
710 kmTrunk Mains
25 Chlorination Points
41 Pumping Stations
42 WaterTanks
PRODUCTION & TRANSPORT SYSTEM

7. © EPAL S.A. All Rights Reserved.
CITY OF LISBON
DISTRIBUTION SYSTEM
350 000 Clients
550 000 Customers
200 000 m3 Daily Demand
5 Pressure Zones
1 430 km Distribution Mains
DISTRIBUTION SYSTEM

8. © EPAL S.A. All Rights Reserved.
AGENDA
1. WHAT IS EPAL
2. NRW SITUATION & STRATEGY ADOPTED
3. SOLUTIONS DEVELOPED
4. CASE STUDY
5. CONCLUSIONS

9. © EPAL S.A. All Rights Reserved.
• During 1990s, annual volume of Non-RevenueWater stabilized around 50 million m3
• Water losses predominantly within the distribution network
0%
5%
10%
15%
20%
25%
30%
0
10
20
30
40
50
60
1993 1994 1995 1996 1997 1998 1999 2000 2001
Mm3
Transport System Distribution Network Total
% NRW Transport System % NRW Distribution Network
Transport System Distribution Network
% NRW Transport System% NRW Distribution Network
NON-REVENUEWATER (NRW) SITUATION

10. © EPAL S.A. All Rights Reserved.
Adopted strategy focuses on:
• Segmentation & continuous network monitoring
• Development of analysis systems using internal resources
• Optimization of Active Leakage Control actions
• Continuous improvement based on experience and results
• Simple and effective analysis processes
• Focus on what is essential and control costs
POLICY & STRATEGY ADOPTED
OBJECTIVE:
Reduce Non-RevenueWater in the Lisbon distribution network from around
25% to sustainable levels of less than 15% within 3 years

11. © EPAL S.A. All Rights Reserved.
EFFICIENCYEFFICIENCY
EXPERIENCEEXPERIENCE
SUSTAINABILITYSUSTAINABILITY
INNOVATIONINNOVATION
OPTIMIZATIONOPTIMIZATION
EFFECTIVENESSEFFECTIVENESS
POLICY & STRATEGY ADOPTED
Strategy development based
on the following values

12. © EPAL S.A. All Rights Reserved.
AGENDA
1. WHAT IS EPAL
2. NRW SITUATION & STRATEGY ADOPTED
3. SOLUTIONS DEVELOPED
4. CASE STUDY
5. CONCLUSIONS

13. © EPAL S.A. All Rights Reserved.
1 – METERING &TELEMETRY1 – METERING &TELEMETRY
2 – LEAKAGETARGET DEFINITION2 – LEAKAGETARGET DEFINITION
3 – MACRO LEAK DETECTION3 – MACRO LEAK DETECTION
4 – LEAK PIN-POINT4 – LEAK PIN-POINT
5 – LEAK REPAIR &TARGETVALIDATION5 – LEAK REPAIR &TARGETVALIDATION
SOLUTIONS DEVELOPED

14. © EPAL S.A. All Rights Reserved.
• Create metering points & telemetry
• Design & boundary validation
• DMA Implementation
DMA PLANNING AND SET UP
DATA ANALYSIS
• Integration in analysis software
• Performance Indicators
• Surgical Control of leakage
CONTINUOUS MONITORING
• Recording of pressure & flow
• Passive system with active alarms
INFORMATION & REPORTING
• DMA Proposals & Reference Manuals
• DMA Analysis & Audit Project Reports
PHASES TO IMPROVE NETWORK KNOWLEDGE & REDUCE NRW

15. © EPAL S.A. All Rights Reserved.
DMA IMPLEMENTATION PROJECT
Create 150
Independent DMAs
with an average of
2 200 clients &
8 km of mains
Monitor around
1 250 km of
network &
more than
98% of clients
340 network
metering &
telemetry systems
continuously
monitoring
flow & pressure

16. © EPAL S.A. All Rights Reserved.
SOFTWARE APPLICATION
Data integration software in theWONE system
Calculates practical performance indicators for efficient and effective management of water
distribution networks with principal focus on Non-RevenueWater control

17. © EPAL S.A. All Rights Reserved.
SOFTWARE APPLICATION
TELEMETRYTELEMETRY
Automatic Meter ReadingAutomatic Meter Reading
Client Management AQUAMATRIXClient Management AQUAMATRIX
GIS G/InterAquaGIS G/InterAqua
SCADASCADA

18. © EPAL S.A. All Rights Reserved.
SOFTWARE APPLICATION
A TOOL WHICH RESPONDS
TO THE USER’S NEEDS
Data integration
from varying
sources into one
system
Increase
accessibility to
essential data via
Internet &
Intranet
Direct
contribution to
NRW reduction
in Lisbon
Reduction in
meter reading
costs
Easy adaptation
for other utilities
Statistical
analysis ,
Graphical
presentation &
system alarms

19. © EPAL S.A. All Rights Reserved.
Web Access
SOFTWARE APPLICATION
LEAKAGE
MANAGEMENT
LEAKAGE
MANAGEMENT
ALARM
MANAGEMENT
CLIENT
CONSUMPTION
PROFILES
ANALYSIS
PERFORMANCE
RANKING

20. © EPAL S.A. All Rights Reserved.
SOFTWARE APPLICATION
Performance
Indicator
Reports
Performance
Indicator
Reports
Principal
Interface with
key management
information
Principal
Interface with
key management
information
Essential Information &
Practical Data readily available

21. © EPAL S.A. All Rights Reserved.
Selection & identification of
priority intervention zones
DMA
Performance
Table & Alerts
DMATotal
Consumption &
Minimum
Nightline
SOFTWARE APPLICATION

22. © EPAL S.A. All Rights Reserved.
29-07-2012 07-08-2012
LEAK
QUANTIFICATION
& REPAIR
VALIDATION
SOFTWARE APPLICATION
Support for Active Leak Control
& Macro leak location

23. © EPAL S.A. All Rights Reserved.
SOFTWARE APPLICATION
Web Access via smartphone & tablet
to support field staff

24. © EPAL S.A. All Rights Reserved.
AGENDA
1. WHAT IS EPAL
2. NRW SITUATION & STRATEGY ADOPTED
3. SOLUTIONS DEVELOPED
4. CASE STUDY
5. CONCLUSIONS

25. © EPAL S.A. All Rights Reserved.
Recoverable Night Flow
130 m3/h
Office work:
• Performance & DMA consumption analysis
• Demand & leakage analysis for large users
DMA Analysis Project Methodology:
CASE STUDY: DMA 1060
Fieldwork – Lift ‘n’ Shift + Find ‘n’ Fix:
• DMA boundary valve validation
• Leak Detection equipment deployment
• Step-Tests and temporary DMA Alterations
• Accoustic Correlation and Ground microphones
• Leak location
• Repair andValidation

26. © EPAL S.A. All Rights Reserved.
Critical Area – former Alcântara roundabout
CASE STUDY: DMA 1060

27. © EPAL S.A. All Rights Reserved.
CASE STUDY: DMA 1060
Water Loss
equivalent to
500 000 m3/year
Flowm3/h
PressuremH20
Repair

28. © EPAL S.A. All Rights Reserved.
1 million m3/year recovered in a single DMA:
• Better demand management & Greater energy efficiency
• Benefits of DMA set-up combined with ALC interventions
• Lower environmental impact & water footprint
• Investment payback measured in weeks!
39785
39794
39803
39812
DMA 1060 (m3/h) Large User (m3/h)
Initial Status Intermediate Status Final Status
Initial Nightline
160 m3/h
Leak Reduction 120 m3/h
Client Use Reduction 30m3/h
CASE STUDY: DMA 1060
Highlights
importance of
Integration of all
data into analysis

29. © EPAL S.A. All Rights Reserved.
AGENDA
1. WHAT IS EPAL
2. NRW SITUATION & STRATEGY ADOPTED
3. SOLUTIONS DEVELOPED
4. CASE STUDY
5. CONCLUSIONS

30. © EPAL S.A. All Rights Reserved.
• Better management & efficiency improvements increase challenges for future leak detection
• Cumulative effect of Network Rehabilitation Project & Active Leakage Control
• Reduced chemical usage, energy consumption & CO2 emissions
Mm3
REDUCED ENERGY CONSUMPTION
REDUCED CHEMICAL USAGE
CO2 EMISSION SAVINGS
NRW REDUCTION SUCCESS IN LISBON
Annual Savings of around €6M in 2012 compared with 2005

31. © EPAL S.A. All Rights Reserved.
NRW REDUCTION SUCCESS IN LISBON
Source: SWAN – Smart Water Networks Forum (2011)
• Results obtained in Lisbon, put the city amongst the best performing global capital cities
• Systems developed which have contributed to efficiency improvements & positive results
at EPAL can be applied in other countries and contexts as we all have the same challenge
0%
10%
20%
30%
40%
50%
60%

32. © EPAL S.A. All Rights Reserved.
SIMPLE
&
ADAPTABLE
SIMPLE
&
ADAPTABLE
SYSTEM
DIAGNOSIS &
OPTIMIZATION
SYSTEM
DIAGNOSIS &
OPTIMIZATION
NETWORK
KNOWLEDGE
NETWORK
KNOWLEDGE
ACTIVE
PERFORMANCE
MONITORING
ACTIVE
PERFORMANCE
MONITORING
TRANSVERSAL BENEFITS
EFFICIENCYAND
SUSTAINABILITY
EFFICIENCYAND
SUSTAINABILITY
PROMOTING
PROACTIVE
MANAGEMENT
PROMOTING
PROACTIVE
MANAGEMENT
WATER
CONSERVATION
WATER
CONSERVATION

33. © EPAL S.A. All Rights Reserved.
TRANSVERSAL BENEFITS
Water loss reduction brings significant efficiency gains and positive
benefits for all stakeholders including the company, clients, regulator
and shareholders:
ENVIROMENTAL
Water abstraction reduction, reduced energy & reagent consumption
and decreased CO2 emissions
ECONOMIC AND FINANCIAL
Rationalization and deferral of investments
SOCIAL
Increasing business efficiency & robustness brings overall gains &
added value for the client through tariff controls

34. © EPAL S.A. All Rights Reserved.