The pipes that deliver water to users and hydrants on individual streets are __________.

The term that accurately describes the pipes delivering water to users and hydrants on individual streets is "distributors." Distributors are the final set of pipes in a water supply system that transport water directly to consumers, as well as to fire hydrants and other services within residential, commercial, and industrial areas. This function is essential for ensuring that adequate water pressure and supply are maintained for everyday use and emergency situations, such as firefighting.

In contrast, the other terms reference different roles in the water supply infrastructure. Collectors typically refer to larger pipes or systems that gather water from various sources before it is sent to distributors. Conduits can refer to any channel for conveying fluids, but they don't specifically denote the local distribution network. Reservoirs are storage facilities for water, used to hold water before it is distributed to users. Thus, understanding the role of distributors in the broader context of water distribution is crucial for effective firefighting and water management practices.