What is the maximum permissible unexplained water loss percentage in a well-maintained system?

The maximum permissible unexplained water loss percentage in a well-maintained system is 10%. This figure is crucial for assessing the efficiency and integrity of a water distribution system.

Water loss can occur for various reasons, including leaks, unauthorized use, or metering inaccuracies. A threshold of 10% serves as a benchmark for utility operators, indicating a reasonable level of unexplained loss that suggests areas may still need improvement, but are generally manageable within the capacity of a well-maintained system. Exceeding this percentage would typically prompt further investigation to identify the causes of the loss and take corrective measures.

When water loss is limited to 10% or less, operators can ensure a higher level of service reliability and maintain infrastructure effectively, whereas options above this figure suggest significant inefficiencies, potentially leading to resource management challenges or increased operational costs.