Can I Drink Tap Water in Chiang Mai?
Caution
Quick Answer
Municipal tap water in Chiang Mai technically meets WHO standards but infrastructure issues and local distrust make bottled water or filtered water recommended for drinking.
Chiang Mai's municipal water supply officially meets WHO standards according to the Provincial Waterworks Authority, however widespread infrastructure concerns and aging underground pipe networks create contamination risks. While tap water is generally safe for washing, brushing teeth, and showering, drinking untreated tap water is not recommended due to particulate matter, potential heavy metals, and bacterial contamination risks from aging pipes. Both local residents and visitors typically use bottled water, water refill stations, or filtration systems for drinking.
Water Quality Details
Chiang Mai's municipal water supply officially meets WHO standards according to the Provincial Waterworks Authority, however widespread infrastructure concerns and aging underground pipe networks create contamination risks. While tap water is generally safe for washing, brushing teeth, and showering, drinking untreated tap water is not recommended due to particulate matter, potential heavy metals, and bacterial contamination risks from aging pipes. Both local residents and visitors typically use bottled water, water refill stations, or filtration systems for drinking.
Water sourceMixed sources
TreatmentChlorination, Filtration
HardnessModerate
Practical Tips
- Check local water quality reports before drinking tap water
- Bottled water is available as an alternative
Recommended filters: Activated Carbon, Reverse Osmosis, Gravity
Traveler Advice
Travelers to Chiang Mai should check current water quality advisories before their trip.
Sources & References
research
travel_advisory
travel_advisory
official_report
Data confidence: medium
Last updated: 2026-02-22
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