A growing population and reliance on increasingly unpredictable rainfall has left South Africa in a water crisis. In partnership with the South African Energy Development Institute (SANEDI) and Institute of Plumber South Africa (IOPSA), CLASP is supporting water efficiency policies to preserve this diminishing and essential resource.
The Department of Water and Sanitation (DWS) published the South African Water and Sanitation Masterplan, outlining a strategy to introduce a Water Efficiency Labelling Scheme (WELS) by 2025. The plan identified shower heads as a key component of future water efficiency programs and the WELS scheme.
Limited data on the flow rate performance of commercially available shower heads poses a challenge for researchers and policymakers. This report builds on previous CLASP research and provides an overview of the flow rate profiles of the tested showerheads, as well as depictions of product spray patterns.
Some of the key findings from the showerhead testing include:
- Less expensive showerheads are less water efficient. Less costly options have an average higher flow rate: over 30 l/min. More expensive showerheads have lower flow rates: less than 10 l/min.
- Using flow rate regulators can significantly reduce flow rates.
- South Africa will experience significant water savings by complying with CLASP recommendations. In previous reports, CLASP recommended the 7.5 L/min flow rate across showerhead options – this could substantially reduce water wastage across the country.
- The majority of shower heads available in South Africa are inefficient. The research found that 58% of the showerheads were of a fixed orifice type and delivered flow rates at an average of 27 L/min when tested at 300 kPa pressure.
Based on these findings CLASP recommends South African National Standards (SANS) for shower heads in line with international standards. Performance requirements such as maximum flow rate and water saving flow rate should aim to ensure positive user experienced when using showerheads with lower flow rates.
With insights from this report, DWS, the South African National Energy Development Institute (SANEDI) and other relevant agencies can establish flow rate requirements for shower heads. The data in this study can also help determine appropriate water efficiency levels for the WELS.
All brand and model identifications have been removed and obscured in depictions to maintain anonymity.
Watch this video to learn how to identify an efficient showerhead.
You may like this additional Testing research
Rapid Product Assessment: A New Approach to Testing Productive Use Appliances
VeraSol developed a Rapid Product Assessment approach for the quality evaluation of emerging productive use equipment. The new testing protocol offers a more direct and affordable pathway to verifying the quality of these nascent technologies.
Evaluating Appliance Performance in the Field: Results from Remote Monitoring Solutions Beta Testing
CLASP through Efficiency for Access beta-tested remote performance monitors to develop an ideal solution that monitors the technical performance of solar refrigerators, solar water pumps and solar milking machines in Kenya, Tanzania, Rwanda, Senegal and India.
Off- and Weak-Grid Appliance Market: Nigeria
This country profile covers relevant market and appliance performance data for off-grid appliances sold in Nigeria based on findings from Efficiency for Access market surveys. It provides market insights to help inform sector stakeholders and encourage higher market penetration for high-quality off- and weak-grid appropriate appliances.
Electric Pressure Cooker Usability Testing Buyer’s Guide
This Global LEAP Usability Testing Buyer's Guide contains information about select Winner and Finalist EPCs that participated in a three-month usability testing in Kenya. Testing was conducted as part of the 2020 Global LEAP Awards EPC Competition.
Enabling Reliable Testing Capacity in Southeast Asia
In 2019, CLASP carried out an inter-laboratory comparison exercise in Vietnam—an exercise to assess regional testing capacity of air conditioners and promote more accurate, consistent, and reproducible tests. The Round Robin Testing Report summarizes the RRT exercise findings, analysis results, and recommendations to improve the testing procedures and processes.
Off- and Weak Grid Appliance Market: Sierra Leone
This country profile covers relevant market and appliance performance data for off-grid appliances sold in Sierra Leone based on findings from Efficiency for Access market surveys. The profile explores the overall market landscape in Sierra Leone, the common power type, size, price, and warranty of off-grid appliances sold in retail markets, and other findings relevant to sector stakeholders working in Sierra Leone.
Transitional Test Method for Ecodesign and Energy Labelling requirements for Electronic Displays
Transitional Test Method sets out a measurement methodology that can be freely used by manufacturers and importers of electronic displays to assess compliance with two recent European regulations.