Assessment and rehabilitation studies of the drinking water systems

For each drinking water distribution network (Saida and Bechar towns: 400,000 inhabitants, network: 1,000km):

Data entry of drawings and existing system Geographical Information System (GIS)
Diagnosis of existing distribution network and copy writing of bidding document
Diagnosis of the existing water supply system
Preparation of the master plan for the refurbishment and the extension of the water supply network
Supporting the technical and commercial management of the public corporation

Project execution dates

from April 2007 to October 2008
Localization

Saïda, Béchar / Algeria
Expertise domains
- Commercial optimization
- Operational assistance
- Organizational strengthening
- Technical optimization

Description of the WMI service

Studies

Diagnosis of existing distribution networks
- Improvement of network zoning
- Network diagnosis: measurement campaign and leak detection programme
- Leak detection program training for local staff (using geophones or ground microphones and occasionally acoustic correlators) on a total length of over 600 km (almost 100% of the supply and distribution networks linear of the two towns studied)
Assessment of the technical and customer services management
- Analysis of drinking water network management
- Assistance for the implementation of a leak detection permanent cell
- Elaboration of a software system for leak detection
- GIS updating and network computerised modelling
- Assessment of the customer services management
- Assessment of customer relationship
- Proposal of reorganisation
- Evaluation of management performances

Supply and laying of hydraulic equipment

210 zoning valves (Ø from 100 to 300 mm)
50 division metres (DN 150 to 300 mm)
8 flowmetres (DN 300 and 400 mm)
18 anti-reverse valves (DN 100 to 250 mm)
Construction of corresponding chambres and sight holes

Training of technical and senior staff

Key Results

600 km

water distribution network analysed for leak detection
Optimized customer management
Equipment supply and technical transfer to the water utilities of Saida and Bechar
Technical and financial basis prepared for tendering for the rehabilitation and extension of potable water system