The average shower head with mains pressure delivers at least 12 litres of water a minute and often much more. Low flow shower heads have flow restrictors built into the showerhead. They reduce flow to about 5-7 litres a minute, saving water and energy – the overall cost savings (Energy Use in New Zealand Households BRANZ report, PDF 257KB) can be considerable.
A suitable model can be found from $40 – choose one with a water efficiency rating of AAA or more. Plumbing stores stock most major brands with a low flow option.
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