Household Activity Average moisture added to the indoor air
Cooking 3.0 litres day
Clothes washing 500 ml per day
Showers and baths 1.5 litres per day per person
Dishes 1.0 litre per day
Clothes drying (unvented) 5.0 litres per load
Gas heater (unflued) 1.0 litre per hour
Breathing 200ml per hour per person
Pot plants As much as you give them