CWEA Maintenance Technologist Practice Test 2025 – Complete Exam Prep

Pressure testing is a widely recognized and effective method for leak detection in plumbing systems. This technique involves filling the plumbing system with water or air and measuring the pressure over a specified period. If there is a leak present, the pressure will drop, indicating that there is a breach in the system where fluid is escaping.

Pressure testing is particularly valuable for identifying leaks in closed systems because it can pinpoint the location of a leak with greater accuracy, especially in larger pipes or systems that are otherwise difficult to inspect visually. Technicians often use pressure gauges to monitor changes in pressure, enabling them to determine the integrity of the plumbing system reliably.

Other methods for detecting leaks, such as visual inspection, sound testing, and thermal imaging, can also be useful but may not provide the same level of assurance as pressure testing. Visual inspection relies on the technician's ability to see obvious signs of leaks, which can sometimes be hidden or obscured. Sound testing utilizes the auditory detection of water escaping, but this method can be challenging in noisy environments. Thermal imaging detects temperature differences that might indicate leaks but may not provide definitive evidence like pressure testing does.