Analysis on non-revenue water in selected services areas in the South Bay of Laguna de Bay, Philippines
2024
Ruiz, J.G.M.
Sustainable Development Goal 6 underscores universal access to sustainable water resources. Despite global scarcity, studies also reveal substantial global water wastage. Non-revenue water (NRW) denotes water lost within water utilities due to inefficiencies before reaching consumers. As of December 2022, Laguna Water District (LWD) serves 178,443 residents with 44,143 connections, predominantly in Los Baos. Despite a 29.94% rise in total produced water from 2016 to 2022, there is a 2.87% decrease in accounted water volume. Historical data showed that network NRW rates exceeded LWUA [Local Water Utilities Administration] treshold, with leakage identified as the main driver for water loss. However, the lack of comprehensive water balance data impedes precise assessment or NRW drivers. Projected data using forecast and simple linear regression revealed LWD's metered connections nearly doubling to 80,332 by 2040. However, the total produced water volume signals a slower growth at 56.09%. Under a business-as-usual scenario, the NRW rate is anticipated to reach 27.18% by 2040, highlighting the urgency of NRW reduction strategies to mitigate resource and financial losses. The use of the Institutional Analysis and Development (IAD) Framework provided a detailed understanding of social institutions influencing water loss outcomes. Using evaluation criteria such as stakeholder engagement, policy alignment, sustainable resource management, adaptability and flexibility, risk assessment and mitigation and cost-effectiveness, the framework serves to assess policy effectiveness and achievement of desired outcomes.
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