How many days' worth of drinking water do you need in Thailand to prepare for power outages and floods? A guide by family size [for residents]

For those living in Thailand,
- are you concerned about power outages and water shortages?
- Are you worried about the rainy season and floods?
- Should I keep water at home?
- How many days' supply do I need to feel secure?
Many people may feel this way.
One of the most important things to prepare for emergencies is drinking water.
However,
- too much takes up space
- too little causes anxiety
- the required amount varies by family size
Therefore, it's important to prepare in a way that suits your needs.
This time, we will explain, for each family size, how many days' worth of drinking water is necessary to prepare for power outages, floods, and water shortages in Thailand.

Why Water Stockpiling is Necessary in Thailand
In Thailand, depending on the region and season,
- power outages
- water shortages
- heavy rain and floods
- delivery delays
- weather making it difficult to go out
can occur.
Especially in urban areas like Bangkok, it can sometimes feel more like a disruption to logistics and transportation rather than to infrastructure.
Therefore, it's reassuring to keep a little extra drinking water at home.

General Guideline: 2-3L per person per day
While living conditions and individual differences vary, many consider around 2-3L per person per day as a guideline for drinking water.
This includes considerations for:
- drinking water
- water used for meals
- hydration during hot periods
It's always better to have a little extra in hot Thailand.
It's always better to have a little extra in hot Thailand.

Recommended Stockpile Quantity by Family Size
Single Person
- 2-3 days' worth: approx. 4-9L
- Several 500ml bottles are convenient
This is a manageable amount to start with.
Couple / Two-Person Household
- 2-3 days' worth: approx. 8-18L
Combining mainly 2L bottles with smaller bottles makes it easier to use.
3-4 Person Family
- 2-3 days' worth: approx. 12-36L
The larger the family, the more important planned storage becomes.
Households with Small Children
- It's recommended to have extra for non-drinking uses as well.
- 500ml bottles are also convenient.
It's reassuring to prepare with ease of use in mind.

How many days' worth should I prepare?
A minimum of 2-3 days' worth
This is a realistic starting point.
Up to about a week for extra safety
Having storage space provides peace of mind.
The important thing is not to run out completely.
It's more important to start with a small amount than to aim for perfection.

Where to store water in a Thai condominium?
In condominiums in Bangkok,
- under the kitchen sink
- lower closet shelves
- under the bed
- entrance storage
It is recommended to use these spaces for distributed storage.
Combining 2L and 500ml bottles is convenient.

How to Avoid Leaving it Stagnant: Rolling Stock
A common mistake with water stockpiling is:
- expiration
- leaving old stock
- forgetting to drink it
To avoid this,
we recommend the rolling stock method.
Method
- Keep a slightly larger supply of water than you usually drink.
- Replenish as much as you drink.
This makes it easier to continue without difficulty.

ONSENSUI99: An Option for Drinkable Emergency Water
ONSENSUI99 is chosen by those looking for water that is both suitable for daily drinking and effective for emergency preparation.
- Sourced from deep underground in Tarumizu, Kagoshima Prefecture
- Natural alkaline hot spring water
- Ultra-soft water with a hardness of 1.7
- Gentle and mellow taste
This water is easy to incorporate into both daily use and emergency stockpiling.

Frequently Asked Questions (FAQ)
Is emergency water really necessary in Thailand?
Depending on the region and season, it provides peace of mind as preparation for power outages, floods, and delivery delays.
Is it necessary even for single-person households?
Yes. Even a small amount provides peace of mind.
Which is better, 2L or 500ml?
2L is convenient for home storage, while 500ml is practical for carrying and ease of use.
Related Articles
▶ What kind of emergency water should you choose for life in Thailand?
▶ Does emergency water taste bad? Rolling stock method
▶ Is Bangkok safe from floods? Measures for residents
▶ What is ONSENSUI99?
▶ Product page here
Summary
In Thailand, for life,
- power outages
- floods
- water shortages
- delivery delays
it's reassuring to have a stock of drinking water tailored to your family size.
The key is to:
- start with a manageable amount
- prepare with water you normally drink
- make it a sustainable method
For those who want to balance daily drinkability with emergency preparedness, ONSENSUI99 is an option.
For those who want to balance daily drinkability with emergency preparedness, ONSENSUI99 is also an option.
Start preparing today, without overexerting yourself.

