sentences:  Bulk water tariffs vary greatly.In 2011 the largest water board, Rand Water, charged Rand 3.97 (US$0.48) per cubic meter.The highest bulk water tariff (Rand 9.11 or US$1.10 per cubic meter) was charged by the financially crippled Namakwa Water Board, while the lowest tariff (Rand 2.28 or US$0.28) was charged by the Pelladrift Water Board.