When is the most effective time to conduct a leak survey?

The most effective time to conduct a leak survey is during the night when the noise is lowest. Conducting the survey at this time allows for better detection of leaks, as the reduction in daytime noise from traffic, machinery, and general human activity creates a quieter environment. This tranquility makes it easier to hear the subtle sounds of leaking water or gas, which might otherwise be masked by background sounds during busier times of the day.

While the other options may seem reasonable, they have drawbacks that can hinder effective leak detection. For example, early morning might have lower water flow, but it can still be noisy due to morning commutes. Conducting surveys during the day, when water use is high, could drown out the sounds of leaks with the increased demand for water and the resultant activity. Mid-afternoon, although comfortable temperature-wise, may still present the challenges of increased ambient noise, making it less beneficial compared to the quiet of the night.