Rand Water has notified Johannesburg and Pretoria that they must implement water restrictions, but Joburg says there is no need. Rand Water, according to the South African Government News Agency, notified the two cities that their supply pipeline was under severe strain from increased water demand and high temperatures.The water utility's temporary water restrictions included banning the use of hoses and sprinklers for watering gardens during the day. It also barred citizens from washing cars or filling swimming pools between 6am and 6pm.These water restrictions would be implemented until further notice, and Rand Water warned that if they were not adhered to, the situation might worsen.But Joburg Water spokesman Eleanor Mavimbela said it would not be implementing water restrictions as water levels in its reservoirs were high."Right now restrictions are not needed, but we do want consumers to conserve water," she said.Ekurhuleni spokesman Themba Gadebe said the metro would not impose water restrictions either."But we are concerned about the high water consumption because of the heatwave," he said.A spokesman for Pretoria was unavailable for comment.The Harry Gwala district Municipality has also announced water restrictions, said KwaZulu-Natal MEC for co-operative governance and traditional affairs Nomusa Dube-Ncube.Ixopo dam was the latest to drop to a critically low level of 30%, Dube-Ncube said.Earlier this week, residents of Johannesburg, Tshwane and Ekurhuleni were asked to use water sparingly as meteorologists warned of a dry summer.South Africa is experiencing El Niño-affected weather and parts of the Western Cape are experiencing the worst drought since 1957.In KwaZulu-Natal, 500000 people face food shortages because of the drought.Consumers have been advised that taking five-minute showers, using grey water to flush toilets and using buckets when washing cars will help save water...