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]

Living in Thailand,
- Power outages and water stoppages are a bit concerning.
- Worried about the rainy season and floods.
- Should I keep water at home?
- How many days' supply do I need to feel safe?
Many of you may have these thoughts.
Drinking water is one of the most important things to prepare for emergencies.
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 how many days' worth of drinking water you need to prepare for power outages, floods, and water stoppages in Thailand, broken down by family size, in an easy-to-understand manner.

Reasons to Stock Drinking Water in Thailand
In Thailand, depending on the region and time of year, certain events can occur:
- Power outages
- Water stoppages
- Heavy rain and floods
- Delivery delays
- Weather making it difficult to go out
These are some examples.
Especially in urban areas like Bangkok, these are often felt as disruptions to logistics and transportation rather than to public infrastructure.
Therefore, it's reassuring to have a small surplus of drinking water at home.

General Guideline: 2-3 Liters per Person per Day
While living conditions and individual differences vary, many people consider around 2-3 liters per person per day as a guideline for drinking water.
This includes:
- Water for drinking
- Water used during meals
- Hydration in hot weather
It's a comprehensive approach.
In hot Thailand, it's reassuring to have a little extra.

Recommended Stockpile by Family Size
Single Person
- 2-3 days' worth: about 4-9L
- Several 500ml bottles are convenient.
This is an amount that's easy to start with without overdoing it.
Couple / Two-Person Household
- 2-3 days' worth: about 8-18L
A combination of mainly 2L bottles plus smaller bottles makes it more convenient to use.
3-4 Person Family
- 2-3 days' worth: about 12-36L
The more family members you have, the more important planned storage becomes.
Households with Small Children
- It's recommended to consider having extra beyond just drinking water.
- 500ml size is also convenient.
It's reassuring to prepare with ease of use in mind.

How many days' supply should I prepare?
Minimum 2-3 days' worth
It's a realistic starting point.
For peace of mind, nearly a week's worth
If you have storage space, it provides a sense of security.
The important thing is not to run out.
It's more important to have a little than to aim for perfection.

Where to store it in a Thai condominium?
In Bangkok condominiums,
- Under the kitchen sink
- Lower part of the closet
- Under the bed
- Entryway storage
It's recommended to store them分散.
Combining 2L and 500ml bottles is convenient.

How to avoid leaving it untouched: Rolling Stock
Common mistakes with water stockpiles include:
- Expiration
- Leaving old stock untouched
- Forgetting to drink it
These are some examples.
That's why we recommend the rolling stock method.
Method
- Keep a little more drinking water than usual.
- Replenish as you drink.
This makes it easier to continue without difficulty.

ONSENSUI99: An Option for Drinkable Stockpiled Water
ONSENSUI99 is chosen by those looking for water that is both suitable for daily drinking and convenient for emergencies.
- Sourced from deep underground in Tarumizu, Kagoshima Prefecture.
- Natural alkaline ionized water.
- Ultra soft water with a hardness of 1.7.
- Gentle and smooth taste.
It's a bottle that's easy to incorporate into both daily use and emergency stock.

Frequently Asked Questions (FAQ)
Is emergency water really necessary in Thailand?
It depends on the region and time of year, but 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 useful for carrying out and ease of use.
Related Articles
▶ What kind of emergency water should you choose for life in Thailand?
▶ Does emergency water taste bad? The rolling stock method
▶ Are floods in Bangkok okay? Measures for residents
▶ What is ONSENSUI99?
▶ Product page is here
Summary
In Thai life,
- Power outages
- Floods
- Water stoppages
- Delivery delays
It's reassuring to have a stock of drinking water tailored to your family size.
The important things are:
- Starting with an amount that is manageable.
- Stockpiling water that you can drink daily.
- Making it a sustainable method.
These are the key points.
For those who want to balance daily drinkability with preparedness, ONSENSUI99 is an option.
Start preparing without stress today.

