• The supply to the consumer is not affected.
• There is no affect to Commerce, Industrial area's or other area's that cannot have the supply withdrawn.
• No need for staff to notify people of intending shut downs.
• No chance of foreign particles entering the water main and causing damage to water main fittings and consumer appliances.
• Restrictions placed on industry by external forces cause immense distress if the Water needs to be shut down, especially in areas where plants operate around the clock and alternate water supplies are unavailable.?