Never drink tap water unless it has been boiled, filtered or chemically disinfected (such as with iodine tablets). Never drink from streams, rivers and lakes. Itโs also best to avoid drinking from pumps and wells: some do bring pure water to the surface, but the presence of animals can still contaminate supplies.
Bottled water is available everywhere, though itโs better for the environment if you treat/filter local 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 30.0 / 100 (100 being best).
Numbeo considers this score to be "Low"
1 adult could save about 402$ per year in Djibouti 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.