Taking water efficiency to the next level: digital tools to reduce non-revenue water

Abstract

Efficiency optimization of urban water systems is a growing concern for water utilities worldwide. This case study aimed at evaluating the impact of using cloud-based tools on the reduction of both real (real-time network monitoring) and apparent water losses (integrated customer meters management) in two water utilities. The incorporation of smart water solutions with a methodology for the management and operation of the systems allowed us to diagnose, prioritize areas and define actions to improve efficiency. Using a real-time monitoring tool allowed us to categorize bursts and to evaluate their impact on water loss volumes and to identify operational inefficiencies regarding detection and repair times, particularly in small and medium bursts. Additionally, the implementation of an integrated customer meters management tool allowed for an optimized meter management reducing apparent losses by estimating metering errors more accurately, enabling the water utilities to replace meters based on specific lifespan. Digitalization, through the implementation of optimized algorithms and early warning systems, allowed the analysis of data in a methodical and prompt manner resulting in non-revenue water reduction up to 8% in 3 years while improving the digital organization of data and its quality (reliability and accuracy), interdepartmental organization and communication, capacity building and utilities’ image among stakeholders. HIGHLIGHTS Two water utilities implemented web-based tools to promote the sustainable reduction of non-revenue water.; Implementing a real-time monitoring tool, utility A and B decreased 13 million m3/year in real losses.; Using an integrated customer meters management web-tool, both utilities decreased apparent losses by 3.1 million m3/year.; Non-revenue water reduced by 8% overall, resulting in savings of 5.8 million € in 3 years.;

Keywords

• apparent losses
• cloud-based solutions
• digital water
• efficiency projects
• non-revenue water
• real losses