Drink with caution. Based on the national picture for Vietnam and local conditions.
Can you…
Can you drink the tap water in Hanoi?
Last reviewed 2026 · Vietnam
Hanoi scores 43/100 for tap-water safety — drink with caution. So if you’re asking whether the tap water is safe in Hanoi, the short answer is “drink with caution.” Scores above 70 mean tap water is generally safe to drink. 40–69 means treat it with caution — filtering or bottled water is wise. Below 40 means it’s best avoided straight from the tap.
Ice, brushing your teeth & cooking: what’s safe in Hanoi?
- Drinkable?
- No — don’t drink it unfiltered. Boil, filter, or buy bottled.
- Brush teeth?
- Usually fine for brushing if you don’t swallow, though the cautious use filtered or bottled water.
- Ice?
- Avoid ice — it’s frequently made from untreated water.
- Cooking?
- Generally okay, since a rolling boil kills most pathogens; rinse raw produce with filtered water when you can.
Should you boil the tap water in Hanoi?
Boiling is a reliable fallback in Hanoi. A rolling boil for one minute kills bacteria, viruses, and parasites. It won't remove chemical contaminants or lead, though — for those you'd need a filter or bottled water. More on what boiling does and doesn’t remove.
Do you need bottled water or a filter in Hanoi?
Many visitors to Hanoi stick to bottled water to be safe, and it's widely available — just check the seal is intact. A reusable bottle with a built-in filter is a lower-cost, lower-waste alternative.
A good filter — ideally certified for microbiological removal, not just taste — makes the tap water in Hanoi safer to drink. For short stays, bottled water is still the simplest option.
How Hanoi compares to the rest of Vietnam
There’s no separate official water-quality feed for Hanoi, so its rating tracks the national picture for Vietnam, which scores 43/100. Conditions in a specific neighbourhood, hotel, or older building can still differ from the city as a whole.
Common questions about tap water in Hanoi
Can you drink tap water in Hanoi?+
Hanoi scores 43/100 on our water-safety index — drink with caution. No — don’t drink it unfiltered. Boil, filter, or buy bottled.
Is it safe to brush your teeth with tap water in Hanoi?+
Usually fine for brushing if you don’t swallow, though the cautious use filtered or bottled water.
Is ice safe to use in drinks in Hanoi?+
Avoid ice — it’s frequently made from untreated water.
Is tap water in Hanoi safe for cooking?+
Generally okay, since a rolling boil kills most pathogens; rinse raw produce with filtered water when you can.
Data & sources
City-level tap-water safety isn’t published as a single official global dataset, so the Hanoi score is derived from Vietnam’s national water-safety assessment together with CDC traveler guidance. For the full country picture and its official sources, see tap water in Vietnam.
Read the full methodology — how the 0–100 score is built and what it does (and doesn’t) mean.