Performance based contract for the water supply service improvement (phase 1)

Improvement of distribution system of drinking water in the north western parishes area including the counties of Trelawny, St. James, Hanover Parish, Negril, with a total population connected to the drinking water distribution system of 380,000 people.

Performance contract for a period of 5 years, financial remuneration associated with the following objectives throughout the project area (15 % of Jamaica):

20% increase in technical performance of the network
35% increase in consumption billed

Project execution dates

from June 2005 to May 2007
Localization

North western parishes / Jamaica
Expertise domains
- Commercial optimization
- Operational assistance
- Technical optimization

Description of the WMI service

Phase 1 (6 months): Audit of the entire distribution water network of Trelawny, Saint James, Hanover Parishes and Negril for a total network length of 1,500km and 60,000 customers (15% of Jamaica)

Data collection (maps, production, consumption, etc.)
Network inventory and mapping on GIS of the entire network
Campaigns of flow and pressure measurement
Leak detection campaigns on the entire network
Audit of the main assets facilities (wells, reservoirs and pumping stations)
Network modelling
Customer account system database analysis (60,000 users)
Customer survey from the project area (100,000 households)
Submission of reports with the description of the works to be implemented in respect of reaching the 2 technical and commercial targets

Phase 2 (18 months): Works implementation

Leak repair campaigns
Monitoring and developing key performance indicators
Upgrading of the pumping stations to fit the new operating conditions
Implementing bulk metres at all production facilities (50) with permanent flow monitoring and remote transmission systems
Network partition into district metering areas: Installation of bulk metres equipped with permanent logging and boundary valves
Pressure management (installation of pressure reducing valves and pressure active control)
Upgrading of the customer account system database
Implementing domestic and large user water metres (25,000 units) to optimise NWC revenues
Preventing overflow reservoirs (installation of altitude and float valves)

Key Results

127,500

m3 produced per day
(vs 142,300 m3 per day before the project)
54,000

m3 consumption billed per day
(vs 41,300 m3 per day before the project)
57%

non-revenue water
(vs 71% per day before the project)

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