Quantity of water per wash

The figures provided for domestic water are a combination of two data points: average consumption linked to a specific use, often an average of several sources on the Internet (water consumption for a shower, a bath, a washing machine, etc.), and a comparison with the average proportion of domestic water used for that use in France (for example, 12% for laundry). For washing the dishes, this gives an average consumption of 12 litres of water.