Is Tap Water Safe to Drink in Ghana?

Accra draws primarily from the Weija Dam on the Densu River and the Kpong headworks on the Volta River, while Kumasi relies on the Owabi and Barekese dams on tributaries of the Offin River. Lake Volta, formed by the Akosombo Dam, is Ghana's largest reservoir and supports both hydropower and regional water supply.

Illegal small-scale gold mining, known locally as "galamsey," has severely polluted rivers including the Offin, Ankobra, and Pra with mercury and sediment, directly threatening intake points for Kumasi and other towns. In Accra, intermittent supply forces widespread use of storage tanks and sachet water refilling that can reintroduce bacterial contamination after treatment.

Accra and Kumasi have Ghana's most developed treatment infrastructure and generally meet safety standards at the treatment plant, but galamsey-related pollution has forced the Ghana Water Company to occasionally shut down intakes on affected rivers. Rural and northern areas, including much of the Upper East and Upper West regions, rely more heavily on boreholes and are more vulnerable to fluoride and bacterial contamination.

Water from the Densu and Volta systems is generally soft to moderate, around 50–90 mg/L, though groundwater in northern Ghana can be harder, sometimes exceeding 150 mg/L..

Sachet water, known locally as "pure water," is the most common drinking water source for urban Ghanaians and is regulated by the Ghana Standards Authority, though quality varies by producer. Wealthier households often use home filtration systems or bottled water alongside boiled tap water.

• •Tap water in central Accra and Kumasi is often boiled by locals as a precaution, and visitors should do the same
• •Avoid tap water sourced near rivers affected by illegal mining, including the Offin and Pra
• •Buy sachet or bottled water from reputable, sealed sources
• •Use a filter or boil water in northern rural regions

• •Boil or filter tap water even in Accra and Kumasi as a routine precaution
• •Buy sachet water only from well-known, sealed brands
• •Avoid rivers near mining areas for any water use, including bathing
• •Be cautious with tap water quality in the northern regions due to fluoride risk