Autoleak how to define if when and where to look for leaks
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Autoleak – How to define if when and where to look for leaks. Giorgio GALLI SGI Studio Galli Ingegneria SpA [email protected] Project Information. Cofinaced by EU and Ministry of Environment Duration: 3 years (ended in 2011) Budget: EUR 1.400.000,00

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Autoleak – How to define if when and where to look for leaks

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Autoleak – How to define if when and where to look for leaks

Giorgio GALLI

SGI Studio Galli Ingegneria SpA

[email protected]

Project Information

  • Cofinaced by EU and Ministry of Environment

  • Duration: 3 years (ended in 2011)

  • Budget: EUR 1.400.000,00

  • 2 Pilot sites: Ancona (Italy), Nicosia (Cyprus)

  • 6 partners (4 engineering consultants + 2 water utilities)

Leakage Control System is Widely Known: so why is leakage so high ?

  • Lack of priority for leakage

  • Insufficient Staff

  • Time consuming analysis

  • Effort directed to emergencies

Daily Step by Step Leakage Analysis

  • Extract minimum night flow

  • Subtract Customer Consumption

  • Quantify Leakage

  • Assess if leakage increasing

  • Decide if worthwhile to locate and repair leaks

The Solution isAutomate the process

Autoleak Features

Automatically for every DMA AUTOLEAK

  • Determines current recoverable leakage

  • Extrapolates rate of rise from historical data

  • Quantifies value of predicted lost water (Benefit)

  • Compares with cost of intervention

  • Decide if worthwhile to intervene

AUTOLEAK – Operative Principle

Intervention if

V > X

AUTOLEAK Structure




- Bulk Flow Meters

- Variable time step


- Pressure inlet

- Variable time step


- Users consumption

- Hourly, daily

Noise Log

- Leak Probability

Hystorical Intervention

Intervention Cost

Historical Consumption

Production and retail Cost

Import Manager (Imports monitoring data)

Geodatabase – GIS

Leakage and

Intervention Database

Quality control of data

Leak location module

Leak repairs module

New Minimum?


Leakage calculation

Estimation of Water Recovered

Estimation of Intervention Cost

Leakage Detection (Noise Loggers)


Intervention (YES)

Autoleak User Interface

Autoleak DMS – DMA flow, leakage and trend

Calculation of Cost of Intervention

  • Average Recovered Flow per Leak

  • Calculation of number of leaks to be repaired

  • Average Intervention Cost (leakage detection + repair)

Historical Intervention



Real Data from DMA

Parametric data from similar case studies

Historical Cost of Intervention

  • Real Data from past interventions

  • Calculation of Cost and Water Recovery of past leakage intervention

  • Cost Estimation of future intervention based on the expected water recovery

Assessment of economic convenience

  • Total value of the recovery (V)

  • Estimated cost of intervention (X)

  • if V>X, the intervention will be worthwhile

  • Priority = (V-X)/km

Leak Repair Report

  • Leak repair report

    • Make records of your leak repairs

    • Provide your staff with site forms to record data

    • Create statistics of your leak repairs

    • Create Leakage Maps

Ancona Pilot Area (Multiservizi SpA - Italy)

Mean Pressure: 55 m

Reservoir Level: 140 m

Min. Ground Level: 56,9 m

Max. Ground Level: 74 m

Water mains length: 1,9 Km

Number of consumer meters: 325




Ancona Pilot Area AMR – ConnectedDevices

Noise Loggers

Bulk Meter


Users’ Meters

Access Point

AUTOLEAK Application - Real Case Example

FTP server

Internet Connection

User Interface

Real time leakage calculation

Leak Alarm from noise loggers


Radio 868MHz

Nicosia Pilot Area (WBN- Cyprus)

  • Mean Pressure: 17.5 m

  • Reservoir Level: 349 m

  • Min. Ground Level: 320 m

  • Max. Ground Level: 338 m

  • Water mainslength: 3.5 Km

  • Mains Material: AC

  • Numberof consumer meters: 86

  • Numberof bulk meters: 4 (2 inlets and 2 outlets)

Description of the system installed-Installation of Concentrator

Self Powered Concentrator (Wind & Solar)

Concentrator IP 68 BOX


Lesson Learned and possible development

  • AMR Transmission problems in Ancona (then solved)

  • Initial setup and customization necessary for each pilot application

  • AMR repeaters mount on light pole, authorization needed

  • Technology Improvement

    • Next development in data transmission (electricity, ADSL, cable? ….)

    • Full Automatic Correlation

Conclusions - Advantages of Autoleak

  • Interfaces with all currently available technology including AMR

  • Data Integration

  • Makes managing leakage almost fully automatic

  • Allows to save investment focusing on interventions where the expected benefit is greater


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