Domestic water use includes water that is supplied to residential areas, ____________, and institutional facilities.

Domestic water use encompasses not only the water supplied to residential areas but also to commercial districts and institutional facilities. Commercial districts refer to areas where businesses operate, including retail shops, restaurants, offices, and other enterprises that rely on water for various purposes, such as customer service, sanitation, and operations.

This classification is important for understanding water distribution needs because commercial businesses can significantly impact water demand, similar to residential and institutional uses. Each of these sectors contributes to the overall water usage profile of a community, which is critical for effective water planning and management.

In contrast, agricultural lands primarily focus on irrigation and agricultural purposes, industrial zones are typically associated with manufacturing and heavy industry, and parking lots do not have a direct demand for water supply, especially in the context of domestic water use. Hence, commercial districts align seamlessly with the concept of domestic water use by being integral to daily life in urban settings.