Tap water is not drinkable in Cameroon. Be careful also to avoid iced drinks. Buy bottled water, use a purifier or drink 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 31.52 / 100 (100 being best).
Numbeo considers this score to be "Low"
1 adult could save about 876$ per year in Cameroon 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.