Vietnam tap water: drinking, ice and brushing teeth

Can you drink the tap water in Vietnam?

Short answer

No, not without treatment. Vietnam had 98 per cent access to improved water sources in 2015, 99 per cent urban and 97 per cent rural, but improved is not the same as drinkable. Tests in early 2009 found widespread contamination of municipal tap water, and households boil it or buy bottled.

Last checked: September 21, 2026

VietSIM sells prepaid Vietnam eSIMs. This guide mentions our store where it is relevant; the facts come from the sources listed at the end.

The figures

	Figure
Access to improved water, 2015	98 per cent of the population
Urban	99 per cent
Rural	97 per cent
Safe to drink untreated	No
2009 testing	Widespread contamination of municipal tap water, including high E. coli
Tap in the home, 2010	23 per cent, 59 urban and 8 rural
Common practice	Boiling, or bottled water
Water losses	Around 30 per cent on average in 2009, up to 75 in some cities

Disclosure: VietSIM sells prepaid eSIMs for Vietnam. We sell no filters, no bottles and no water treatment of any kind.

Improved is not the same as drinkable

This is the distinction that makes the coverage statistics confusing. In 2015, 98 per cent of the population had access to improved water sources, 99 per cent in urban areas and 97 per cent rural. That is a high number and it is real.

It does not mean the tap is drinkable. Improved describes the source and its protection, not the water arriving at your glass. Testing in early 2009 found widespread contamination of municipal tap water, including high levels of E. coli, and the practical result is that households boil water or buy bottled.

An improved source against a tap in the home

Improved source, national98%Improved describes the source and its protection, not the water in your glass.
Improved source, urban99%
Improved source, rural97%
Tap at home, national23%Which is why drinking straight from a tap is not the habit here.
Tap at home, urban59%
Tap at home, rural8%

Per cent of the population. Improved source 2015, tap at home 2010. Source: Wikipedia, Water supply and sanitation in Vietnam.

Losses in the network make the point concrete. Non-revenue water averaged around 30 per cent in 2009, down from 39 per cent in 2000, and reached 75 per cent in some cities. Water that leaks out of a pipe at that rate is a pipe that other things can leak into.

What this means on a trip

Drink bottled or boiled. That is what the country does, so it is neither precious nor unusual.
Ice is generally fine. The uniform machine-made cylinders come from treated water and are used everywhere.
Teeth are a personal call. The exposure is small; if you are being careful anyway, use bottled.
Hot tea is free in most places and is boiled by definition, which is why it is on every table.

The waste problem, stated honestly

A visitor drinking bottled water for two weeks generates a visible pile of plastic, and that is a real cost of the advice above. Refill stations exist in tourist towns and many hotels will fill a bottle from a treated dispenser, which is worth asking about at check-in.

A twenty litre bottle on a dispenser beside a kettle, with a reusable bottle being filled — The dispenser at reception is usually the answer to the pile of plastic.

This page is not going to pretend there is a clean answer. The water is not drinkable from the tap, and the alternative has a cost. Reducing the number of bottles is the available improvement.

The rest of the health picture, including what your insurance has to cover, is in travel insurance for Vietnam, and the wider safety picture is in is Vietnam safe. Eating well on the street, which is the other question people ask in the same breath, is in Vietnamese street food.

If you need to find a refill point or a pharmacy while you are out, sizing is in how much mobile data for Vietnam with the plans in the Vietnam eSIM store.

Questions

Is the tap water safe?

Not to drink untreated. Testing in early 2009 found widespread contamination of municipal tap water, including high levels of E. coli, and residents generally boil water or buy bottled rather than drinking from the tap.

But coverage is 98 per cent, isn't it?

It is, and that is the confusion worth clearing up. In 2015, 98 per cent of the population had access to improved water sources, 99 per cent in urban areas and 97 per cent rural. Improved means the source is protected, not that what comes out of the tap is safe to swallow.

What about ice?

Commercially produced ice, the uniform cylinders with a hole through the middle that most places use, is made from treated water and is normal to accept. The judgement call is a place that is clearly making its own ice from an unknown source, which is rare and usually obvious.

Can I brush my teeth with it?

Most visitors do, and the exposure is very small compared with drinking a glass. If you are cautious, or your stomach has already had a difficult week, use bottled water for that too. This is a personal risk call rather than a rule.

What do people actually drink?

Boiled water and bottled water, and in restaurants usually a bottle brought to the table or free tea. Only 23 per cent of Vietnamese had a tap in the home as of 2010, 59 per cent in urban areas and 8 per cent rural, so the culture of drinking straight from a tap is not there to begin with.