Smart water systems Applicable across all of South Africa

The document outlines the architecture of smart water systems, presenting case studies from Cape Agulhas, Saldanha Bay, and Bergrivier municipalities to demonstrate benefits such as cost savings and improved billing. It provides a checklist for municipalities to assess their readiness and a cost-benefit analysis comparing ultrasonic smart meters to conventional mechanical meters, while listing funding resources like SIDAFF and the DBSA's Non Revenue Water Programme.

• Smart water systems are structured in five layers: the physical layer (pipes, pumps), the sensing and control layer (smart sensors and remote-controllable devices), the collection and communications layer (technologies like LoRaWAN, Sigfox, and NB-IoT), the data management and display layer (SCADA, GIS), and the data fusion and analysis layer (hydraulic modelling and Decision Support Systems).
• Cape Agulhas Municipality implemented a smart groundwater management system using LoRaWAN technology, installing piezometer tubes, level sensors, and variable speed drives (VSDs). This system is expected to save R1.4 million annually in transport and labour costs from an initial investment of R2.7 million, with a projected payback period of 24 months.
• Saldanha Bay Municipality installed approximately 5,600 residential ultrasonic smart water meters in Vredenburg by the end of 2021. Additionally, the implementation of smart pressure management zoning in a high-leakage bulk distribution area reduced burst frequency from 50.4 to 7.25 bursts per month, resulting in annual savings of R6.3 million.
• Bergrivier Municipality used smart water meters in Velddrif to address non-revenue water, specifically targeting meters that were previously inaccessible to readers. This led to revenue enhancement and more accurate billing, while providing customers with an app to monitor usage and log faults.
• A financial analysis suggests that over a 16-year period, the cost of installing a residential ultrasonic smart meter (approximately R2,000) is very similar to the cost of conventional mechanical meters (R300-R500), with a calculated net present value saving of R56 per household, assuming a 16-year battery life for smart meters and an 8-year life for mechanical meters.
• Municipalities are advised to evaluate several readiness factors before adopting smart systems, including the strength of their internal IT department, the specific problem the system solves, staff openness to change, and the availability of infrastructure to act on the data received.
• Several funding and support mechanisms are available for South African municipalities, including the Sustainable Infrastructure Development and Financial Facility (SIDAFF), the dtic's Critical Infrastructure Programme (CIP) grant, the DBSA's Non Revenue Water Programme, and the Water Technologies Demonstration (WADER) Programme.

APA

Reddick, J. (2021). Smart water systems Applicable across all of South Africa. GreenCape. https://greencape.co.za/assets/SMART_SYSTEMS_INDUSTRY_BRIEF_21_1_22.pdf

Chicago

Reddick, Jane. Smart water systems Applicable across all of South Africa. GreenCape, 2021. https://greencape.co.za/assets/SMART_SYSTEMS_INDUSTRY_BRIEF_21_1_22.pdf.

Wikipedia

{{cite report |last1=Reddick |first1=Jane |title=Smart water systems Applicable across all of South Africa |publisher=GreenCape |date=2021 |url=https://greencape.co.za/assets/SMART_SYSTEMS_INDUSTRY_BRIEF_21_1_22.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{reddick2021smart, author = {Reddick, Jane}, title = {{Smart water systems Applicable across all of South Africa}}, institution = {GreenCape}, year = {2021}, url = {https://greencape.co.za/assets/SMART_SYSTEMS_INDUSTRY_BRIEF_21_1_22.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }