Which type of public water supply includes locations where people live for six months or less?

The correct choice is associated with the type of public water supply that serves locations where people typically reside for shorter periods, specifically six months or less. In this context, transient non-community water systems are designed to provide water to individuals who do not have a permanent residence in the area, such as those in camps, parks, or temporary housing. These systems are crucial for ensuring that visitors or short-term residents have access to safe drinking water during their stay.

Transient non-community water systems are distinct from community systems, which serve the same population year-round, and non-transient non-community systems, which cater to those who work, but do not stay in one place for extended periods. The classification helps in regulating water safety and quality based on the duration of residency, given the different needs and usage patterns of the user groups. In summary, transient non-community water supplies are specifically defined to accommodate temporary uses, making this choice the accurate description of the type of system in question.