What is the purpose of a graywater system?

A graywater system serves the specific purpose of recycling water that has already been used in residential activities, such as those from sinks, showers, and washing machines. The primary goal of this system is to repurpose this "gray" water for non-potable uses, most notably landscape irrigation. By doing so, it conserves fresh water resources and reduces the overall demand on municipal water supplies. This practice supports sustainable water management and helps homeowners maintain their landscapes without relying heavily on potable water, which is typically reserved for drinking and cooking.

In contrast, the other options present alternatives that do not align with the primary function of a graywater system. For example, increasing water pressure relates to plumbing performance rather than water recycling. Purifying wastewater concerns treatment processes that target sewage, which is markedly different from how graywater is handled. Eliminating the need for sewer connections is also outside the scope of a graywater system, as it does not bypass the need for sewage management; rather, it simply reduces the volume of wastewater that would enter the sewer system. Therefore, option B is correctly identified as the accurate representation of a graywater system's purpose.