Smart water metering: navigating the path to efficiency
At a glance
With the new water reform process on the horizon, councils, utilities and water services council-controlled organisations (WSCCOs) face significant opportunities. This is the moment for these entities to rise to the challenge, delivering services that are both efficient and cost-effective.When it comes to drinking water supply systems, two operational strategies stand out: aligning customer charges with operational costs and striving to minimise those costs. Water metering systems are among the most effective tools for achieving these goals. They provide a clearer understanding of unaccounted-for water (UFW), bridging the gap between total metered supply and customer water usage.
Knowledge is power when it comes to reducing UFW. Accurate metering data enables early leak detection, which can significantly reduce or even eliminate the need for extensive capital works. International studies have shown that basic/manual metering systems can reduce UFW by at least 15%, delivering a range of benefits, from improved water pressures, a reduction in operational costs to fairer billing for customers - ensuring they only pay for what they use.
Evaluating the data from existing meters can build a strong business case for renewing, enhancing or expanding meter systems. For instance, GHD’s assessment and review of TasWater’s 180,000-meter fleet in Tasmania, including both automatic and manual meters, involved multi-criteria analysis and strategic planning. This process provided a business case for upgrading to an advanced metering system and included procurement management advice, provision of draft specifications and assessment of vendor submissions. The initial pilot, involving implementation of 40,000 new smart meters, began in late 2016 and was completed in 2019.
The smart digital metering pilot achieved an over 8% improvement in the measurement of billed water volumes when compared to the in-service older mechanical water meters. The successful application of the technology, both as Automated Meter Reading (AMR) for drive-by reads and Advanced Metering Infrastructure (AMI) for remote reads via fixed radio networks, was clearly demonstrated during the deployment of the advanced meters.
Whether your system lacks meters entirely, relies on manual readings or uses older smart meters, upgrading to modern smart water metering systems offers numerous benefits for both water providers and their customers. However, careful implementation and data management are crucial, as the ‘garbage in, garbage out’ (GIGO) principle applies here just like any system.
In 2021, our Senior Technical Director for Water Efficiency, Edgar Johnson, published a paper with the Australian Water Association, exploring the intricacies of smart metering. His findings highlighted that metering alone doesn’t ensure quality data. A flexible, approach is essential to navigate technological and regulatory landscapes and facilitate development of risk mitigation strategies in order to implement the optimal metering solution.
The shift to modern smart water metering systems presents substantial opportunities to enhance water management and reduce water loss. Success hinges on careful planning, implementation and ongoing evaluation. By adopting a forward-looking approach, water supply providers can maximise the benefits of smart metering technologies, increasing their operational efficiency and delivering better outcomes for their customers. Embracing this approach can help develop more efficient, data-driven water management strategies that can better adapt to future advancements and regulatory change.