Before: work out your number
Plan for three litres per person per day for drinking and basic hygiene, for three days. A family of four therefore needs around 36 litres. Store it in food-grade containers out of direct sunlight, split across two or three places.
Day 1: start on your store
Drink from your stored water first. As soon as you hear of a problem, fill the bath and any clean containers — that water is fine for flushing. Check your water company's website or social channels for updates.
Day 2: keep track
Keep an eye on how much is left and keep drinking water separate from washing water. Follow any arrangements your water company announces, such as bottled water or a bowser — take a carrier with you.
Day 3: follow the instructions
By the end of day three you'll have used around nine litres per person. If a boil-water notice or other advice is issued, follow your water company's specific instructions for your area.
Afterwards: refill and rotate
Refill your containers once the supply is back, and rotate stored water every six months — the weekend the clocks change is an easy reminder.
