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Water Saving Calculator

Calculate water and money saved with shorter showers and low-flow fittings.

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Fill in the details to get your result.

How This Works

Annual shower water = people × daily minutes × flow rate (L/min) × 365 days. Power showers use 15L/min; standard 9L/min; eco showerheads 6L/min. UK average person uses ~150L/day across all uses.

For most adults and couples, yes — you typically use 60–80% of assumed unmetered consumption. Families with 4+ people may pay more metered. Most water companies offer a free meter installation and 24-month trial period — request one if you have fewer people than bedrooms.
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