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Learning the Islands’ Water Situation to Improve Efficiency
Trinidad & Tobago


As part of developing a Water Master Plan for the island Trinidad and Tobago, a full water balance was necessary to understand the scope of non-revenue water.


One major challenge of conducting a water balance was that only 1.5% of residential customers were metered and only 17% of the customers receive 24/7 water supply.


Trinidad: System input is 956 MLD from 107 water sources. The island has a population of 1.25 million of which only 16.6% have full service. FSE is 53.3% and 5% population is completely un-serviced.


Tobago: System Input is 46.1 MLD with 24 water sources. The island has a population of 56 thousand of which only 39.6% have full service. FSE is 63.3% and 15.2% of the population is un-serviced.


Project Goal

The project included a detailed, validated water balance, a pilot water loss reduction project and a water efficiency survey. The project also required the development of a methodology for addressing lack of metered consumption and intermittent supply. Meters were installed on a randomly selected sample of residential customers across the country to provide this data.


Project Scope   


To assess the scope of water efficiency savings within residential properties in Trinidad and Tobago, a water efficiency survey was undertaken which included a telephone survey of 425 randomly-selected, unmeasured residential customers. It was designed to collect basic information on usage of fittings and appliances within these properties. In addition, an internal water use survey was carried out in 270 customer properties.



The feasibility study effectively gathered data on the Trinidad and Tobago water situation. A pilot water loss reduction program was executed to develop a detailed validated water loss assessment and contribute the necessary quantitative information for the development of a national Water Master Plan. With more than 100 sources of water supplying the distribution system, key system input meters accounting for 75% of production were used for field testing.