Guides General 12.03.2026

Why water should be planned first for every power cut

Without electricity, the water supply can also be affected. Anyone who plans drinking water, utility water, and hygiene early avoids stress and risky improvisation.

During a power cut, many people first think of lights, mobile phones, and fridges. But water is often more important. Without water, everyday life becomes difficult very quickly: drinking, cooking, washing hands, toilet use, medication, pets, and cleaning all depend on it.

Why can water be affected during a power cut?

Water does not simply come from the tap by itself. Behind the supply are pumps, control systems, pressure systems, storage tanks, and technical monitoring. Many of these systems need electricity or digital infrastructure.

A short power cut does not automatically mean that water stops immediately. But during longer or larger disruptions, restrictions can occur.

That is why every household should have a water supply.

How much water should you plan for?

For the beginning, a simple calculation makes sense:

2 litres of drinking water per person per day

This is a minimum amount for drinking and simple preparation. In addition, water is needed for hygiene, cleaning, pets, or special needs.

Example for 3 days:

1 person: at least 6 litres of drinking water
2 people: at least 12 litres of drinking water
4 people: at least 24 litres of drinking water

For 10 days:

1 person: at least 20 litres of drinking water
2 people: at least 40 litres of drinking water
4 people: at least 80 litres of drinking water

That sounds like a lot. That is exactly why you should not start only in an emergency.

What about utility water?

Utility water is water that is not used for drinking. It is needed for:

washing hands
personal hygiene
toilet flushing
cleaning
laundry only in an absolute emergency

Utility water can be prepared in canisters, buckets, or a bath if a longer outage is foreseeable. Drinking water should be kept separate from it.

How do you store water sensibly?

Use clean, food-safe canisters or originally sealed water bottles.
Store water in a cool, dark, protected place.
Label canisters with the date.
Regularly check smell, colour, and condition.
Do not use old chemical canisters or unsuitable containers.

What is especially important in warm countries?

In warm climates, water becomes even more important. Heat, sweating, and lack of cooling increase the need. In the Dominican Republic, you should also plan for:

more drinking water per person
water for children and older people
water for pets
safe storage against heat
protection against contaminated containers

Do not forget hygiene

Water storage is only one part. Without hygiene items, a problem can develop quickly. Useful items include:

wet wipes
soap
disinfectant
toilet paper
bin bags
disposable gloves
sanitary products
nappies if needed

Conclusion

Water is the foundation of every blackout preparedness plan. Anyone who plans water early gains safety and peace of mind.

Start with 72 hours. After that, you can expand your supply to 7, 10, or 14 days.

Related download: Water & hygiene during a power cut.