By establishing a dedicated funding source through an assessment, the County can ensure the revenue required to manage and maintain this important system is available. A fee based on the impervious surface area is an equitable way to charge and collect revenues for this program. Impervious or hardened areas in urban environments, lead to increased stormwater runoff, which can cause flooding, erosion and pollution. The fee will fund ongoing maintenance of County-owned storm drainage infrastructure, as well as water quality monitoring, evaluation and improvements.