Water is not considered safe to drink in The Gambia. It's best to boil, filter or chemically treat water (ie with iodine tablets) before drinking. Bottled water is widely available โ though the environmental impact of all the discarded plastic is considerable.
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 25.0 / 100 (100 being best).
Numbeo considers this score to be "Low"
1 adult could save about 613$ per year in Gambia 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.