Why should storm drains be kept clear of septic systems?

The primary reason storm drains should be kept clear of septic systems is to prevent stormwater from entering and disrupting its function. When stormwater infiltrates a septic system, it can overwhelm the system, leading to potential backups, system failure, and contamination of local groundwater. Septic systems are designed to handle wastewater and are not equipped to manage large volumes of stormwater. Excessive water from storm events can dilute the organic matter in the septic tank, impair bacterial activity essential for breaking down solids, and can cause the drain field to become saturated or flooded, ultimately reducing its effectiveness.

Ensuring that storm drains are clear helps maintain the proper functioning of the septic system, safeguarding both the system’s integrity and environmental health. The other choices miss the mark: storing excess water is not a function of a septic system, enhancing aesthetics does not address functional needs, and faster drainage is not a goal - efficient treatment and absorption of wastewater is what matters.