What is the function of an area drain?

An area drain is specifically designed to collect stormwater from open areas such as parking lots, yards, or driveways. Its primary function is to prevent water accumulation in these spaces by channeling excess water away from the surface and directing it into a proper drainage system. This helps to mitigate flooding and reduce water-related damage, ensuring that open areas remain usable and safe during heavy rainfalls.

The other functions provided in the options are not suited to what an area drain does. While cleaning wastewater or filtering pollutants involves additional processes typically found in wastewater treatment systems, these are not the responsibility of area drains. They do not distribute water evenly; rather, they are intended to collect and direct it.