What are the two main types of water sources for a water supply system?

The two main types of water sources for a water supply system are surface water and groundwater. Surface water refers to water that is found in bodies of water such as rivers, lakes, and reservoirs. It is often readily accessible and can be collected and treated for human consumption and other uses. Groundwater, on the other hand, is the water that is stored underground in aquifers and is accessed through wells.

Using both surface water and groundwater allows for a more reliable and sustainable water supply system, as these sources can complement each other during times of drought or when one source is compromised. Proper management of these two types of sources is critical in ensuring adequate water availability and quality for communities. Other options like ocean water and river water do not encompass the primary classification of water sources, while rainwater and reclaimed water represent supplemental sources, rather than the fundamental types.