Is Tap Water Safe to Drink in Hong Kong?
Yes, tap water in Hong Kong is safe to drink and treated to a high standard, though many residents filter or boil it by habit due to concerns about internal plumbing in older buildings rather than the treated supply itself.
Water Source
About 70–80% of Hong Kong's raw water is imported from the Dongjiang (East River) in mainland China under a long-standing supply agreement, supplemented by local reservoirs, and treated by the Water Supplies Department to WHO guideline standards.
Contaminants & Concerns
No significant concerns in the treated supply itself. Older buildings can have aging internal plumbing or rooftop tanks that affect water at the point of use, which is why filtering is common practice.
Regional Variations
Consistent safe quality across Hong Kong Island, Kowloon, and the New Territories.
Water Hardness
Moderate, roughly 50–100 mg/L..
Do Locals Drink Tap Water?
Many Hong Kong residents boil or filter tap water by habit, though the treated municipal supply itself is safe.
Tips for Travelers
- •Tap water is safe, though many locals filter or boil it out of habit related to building-level plumbing
- •Bottled water is widely available if preferred
- •Newer buildings generally have better-maintained internal plumbing
Recommended Precautions
No acute safety precautions; filtering is a common local habit rather than a necessity
Cities in Hong Kong
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •WHO Guidelines for Drinking-water Quality
- •CDC Travelers' Health destination pages
- •WHO/UNICEF Joint Monitoring Programme (JMP)
- •National and municipal water utility public quality reports