Can You Drink Tap Water in Hong Kong?

Tap water in Hong Kong is completely safe to drink and is among the highest quality in Asia. The Water Supplies Department (WSD) manages one of the most sophisticated water treatment and monitoring systems in the region, treating water sourced from Dongjiang (East River) in Guangdong Province, China, as well as local impounding reservoirs. The water undergoes extensive multi-stage treatment and is tested thousands of times per year to ensure it consistently meets or exceeds World Health Organization drinking water guidelines.

Hong Kong's water infrastructure is modern, well-maintained, and subject to stringent government oversight. The WSD's “Water Safety Plan” framework manages quality from source to tap, and the city's overall water safety record is excellent. Visitors staying in hotels, modern apartments, and commercial buildings can drink tap water with confidence.

One nuance worth noting: in older residential buildings — particularly those constructed before the 1990s — internal plumbing and rooftop storage tanks may be aging, and the WSD recommends flushing taps for 30 seconds before drinking in these buildings as a precaution. This is a minor precaution rather than a significant safety concern, and the WSD provides free water testing services for residents of older buildings who have concerns.

Despite having excellent tap water, many Hong Kong residents culturally prefer bottled or filtered water, and this is reflected in the city's consumption patterns. Restaurants typically serve bottled water, and many locals use household filtration systems as a personal preference rather than a necessity. Visitors, however, can drink freely from the tap in any modern building or hotel.