According to the WHO, tap water is safe for consumption for 75% of the country.
There is a divide between rural and urban areas, tap water is safe to drink in 81% of urban areas, while it's only safe to drink in 66% of rural areas.
Serbia's tap water is safe for drinking, as is the fresh spring water often found at monasteries. Bottled water is sold everywhere.
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 65.12 / 100 (100 being best).
Numbeo considers this score to be "High"
1 adult could save about 358$ per year in Serbia 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.