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 PHASE 1 - PERFORMANCE BASED CONTRACT FOR THE WATER SUPPLY SERVICE IMPROVEMENT OF THE NORTH WESTERN PARISHES OF JAMAICA
Jamaica
PHASE 1 - PERFORMANCE BASED CONTRACT FOR THE WATER SUPPLY SERVICE IMPROVEMENT OF THE NORTH WESTERN PARISHES OF JAMAICA
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 two years, financial remuneration associated with the following objectives throughout the project area:

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

Description of WMI services


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 two 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


Situation before works
  • Production: 31.3 mgd (142,300 m3 per day)
  • Billed consumption: 9.09 mgd (41,300 m3 per day)
  • Non Revenue Water: 71%

Situation after works
  • Production: 28.04 mgd (127,500 m3 per day)
  • Billed consumption: 11.87 mgd (54,000 m3 per day)
  • Non Revenue Water: 57%

After the consolidation phase of results, increase of the network performance between the start the project and the situation at the end of May 2007 was set at 18%.



IDENTITY CARD

   Location
 
Jamaica
   Date of award
 
06.2005
  Date of completion
 
05.2007
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