Action plan implementation for non-revenue water reduction

WMI and NWC were engaged in a co-management arrangement for the reduction of non-revenue water for the Stony Hill area.

These included all the commercial and technical activities, and monitoring such as house-to-house survey, regularising consumers in several informal settlements, design and installation of meter banks, disconnections/reconnections, account monitoring, DMA monitoring, leak detection and repairs, pressure management of distribution network, maintenance of appurtenances and the calculation of non-revenue water.

WMI provided significant transfer of knowledge and best practice solutions to NWC personnel, including the production and development of databases of requisite tools to foster effective commercial monitoring of customer accounts.
WMI also conducted formal and informal training in the areas of leak repairs on large diameter pipeline, installation of meters, etc.

Project execution dates

from April 2012 to December 2012
Localization

Stony Hill / Jamaica
Expertise domains
- Commercial optimization
- Technical optimization

Description of the WMI service

Network Improvement Sherbourne Heights/Upper Mannings Hill Road/Kingswood:

Repair of leaks, replacement of gate valves, installation of pressure reducing valves (PRVs), leak detection by acoustic methods (2 weeks), complete refurbishment of bi-directional altitude valve for Kingswood tank
Supply and installation of new ductil iron pipelines (12”, 6”, 2-3-4”)
450 m³ steel tank with associated overflow and washout

Non-revenue water reduction in Stony Hill:

Supply and installation of water meters and associated fittings (couplings, bends, etc.), various valves and meter boxes: (5/8″, 1″, 3“) with geo-referencing (using GPS units) of all replaced meters and the construction of 59 meter banks comprising a total of 783 water meters
Supply of materials for maintenance of distribution system by NWC team: spare parts, equipment and tools for NWC team, fittings and materials for leak repair
Technical assistance by WMI personnel at the disposal of NWC: leak detection services by acoustic methods, operation and maintenance services, hydraulic modelling, customer survey

Installation of large meters:

Selection of most cost-effective meters to be replaced, geo-referencing (using GPS units) of all replaced meters
Supply of specific equipment to NWC, namely cameras and GPS
Supply and installation of commercial and large meters (1”, 2”, 3”, 4”), and associated fittings and accessories
Construction of complete chambers for 2″ to 4” water meters

Key Results

Reduction of non-revenue water from 75% to 39% in 12 DMAs (estimated population in these DMAs is 15,000 people)

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