According to the WHO, tap water is safe for consumption for 26% of the country.
There is a divide between rural and urban areas, tap water is safe to drink in 57% of urban areas, while it's only safe to drink in 17% of rural areas.
The number-one rule is be careful of water and ice, although both are usually factory produced, a legacy of the French. If you donโt know for certain that the water is safe, assume the worst. Reputable brands of bottled water or soft drinks are usually fine, but you canโt safely drink tap water. Only use water from containers with a serrated seal. Tea and coffee are generally fine, as theyโre made with boiled water.
According to the CDC tap water is generally not safe for consumption.
According to the Numbeo water drinkability and accessibility index, tap water has a score of 47.6 / 100 (100 being best).
Numbeo considers this score to be "Moderate"
1 adult could save about 467$ per year in Cambodia by drinking tap water instead of buying bottled water.
๐ณ Drinking tap water would also help with reducing your plastic footprint and improve environmental pollution.
Like in most countries, water quality and accessibility differs from location to location, therefore it's the best to check the information available on that place.