Rand Water Rand Water Rand Water previously known as the Rand Water Board is a South African water utility that supplies potable water to the Gauteng province and other areas of the country and is the largest water utility in Africa. The water is drawn from numerous sources and is purified and supplied to industry, mining and local municipalities and is also involved in sanitation of waste water. The Witwatersrand sits on the South African Highveld and consists of mostly grasslands with summer rains with an average yearly of 784mm rainfall. The Witwatersrand ridge stretches for 96 km from east to west
Currency substitution Currency substitution Currency substitution or dollarization is the use of a foreign currency in parallel to or instead of the domestic currency. Currency substitution can be full or partial. Most, if not all, full currency substitution has taken place after a major economic crisis, for example, Ecuador and El Salvador in Latin America and Zimbabwe in Africa. Some small economies, for whom it is impractical to maintain an independent currency, use those of their larger neighbours; for example Liechtenstein uses the Swiss Franc. Partial currency substitution occurs when residents of a country choose to hold a significant share of their