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What was the intervention?
Block A was fitted with water-saving basin and shower taps with a flow rate of 5–6 litres per minute (L/min).
Block C retained the original fixtures, which had a significantly higher flow rate of 13–14 L/min.
Block B was excluded from the primary comparison.
Results
Water consumption per guest in Block A was reduced by 60% compared to Block C.
Importantly, the reduced flow rate did not affect shower duration, suggesting that lower flow does not change guest behaviour in terms of time spent using water.
Guest feedback was mostly neutral or positive, though a few guests noted a slight reduction in comfort due to the lower flow.
Key findings
Low-flow taps can deliver substantial water savings without compromising guest habits.
Some sensitivity to flow strength was observed, indicating that guest comfort should still be considered in water-saving initiatives.
The study authors recommend an optimal flow rate of 7–8 L/min as a balance between sustainability and guest satisfaction.
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