Water Distribution D1/D2 Practice Test

Decreased water demand is indeed the correct answer because it does not indicate a leak in the water distribution system. Instead, a decrease in demand typically reflects a lower requirement for water usage, potentially due to seasonal changes or shifts in population or consumption habits. This does not necessarily correlate with any malfunction or leak within the distribution system.

In contrast, unexpected water pooling is a clear and visible indication of a possible leak. It suggests that water is escaping from the pipes underground or through other infrastructure rather than being delivered to consumers as intended. Increased water bills often serve as a financial indicator that something in the system may be amiss, as it suggests that more water is being processed than what is being utilized, which can indicate a leak. Lastly, reduced water pressure commonly corresponds with leaks as well, since escaping water means less force is exerted in the system, resulting in lower pressure readings.