Texas Commission on Environmental Quality (TCEQ). Class C Water License Exam

What should unaccounted water loss ideally be less than as a percentage of total water production?

1. 10%

2. 15%

3. 20%

4. 25%

The correct answer is: 15%

Unaccounted water loss is a critical measure in water utility management, reflecting the efficiency of the water distribution system. The ideal target for unaccounted water loss is generally considered to be less than 15% of total water production. Maintaining unaccounted water loss below this threshold indicates a well-managed system where leaks, theft, errors in measurement, and other losses are minimized. A level below 15% suggests effective monitoring and maintenance practices, helping to ensure that a greater proportion of the water produced is delivered to end users. When unaccounted water loss exceeds 15%, it can signal issues such as aging infrastructure, inadequate maintenance, high levels of unauthorized use, or inefficiencies in the water production and distribution processes. Therefore, aiming for less than 15% is not only a goal for operational efficiency but also crucial for sustainable water resource management.