Main resources of water resources: The main sources of water are surface water, groundwater and rainwater. The main rivers are the Orange River draining to the Atlantic Ocean, the Limpopo River, the Incomati River, the Maputo River, the Tugela River, the Olifants River (Limpopo), and the Breede River. The uMkhomazi, Maputo, Thukela and Limpopo all drain to the Indian Ocean.
Water demand in South Africa - Based on rising population, economic growth projections, and current efficiency levels, demand for water in South Africa is expected to rise by 17.7 billion m³ in 2030 while water supply is projected to amount to 15 billion m³, representing a 17% gap between water supply and demand (or a 2.7–3.8 billion m³ water. As much as 30% of water in SA is for urban and rural use (including domestic use), while the rest is split among industrial, power generation and afforestation uses. About 12% of all water is used for domestic (home) use, in the country.