What might indicate the need for maintenance of a mound system?

Consistent water logging is a significant indicator that a mound system may require maintenance. This condition suggests that the system is not effectively absorbing wastewater, indicating possible issues such as clogged distribution pipes, high groundwater levels, or insufficient drainage within the system. When water consistently accumulates on or around the mound, it can lead to system failure and environmental contamination. Hence, recognizing the signs of water logging is critical for prompting timely maintenance to ensure proper functionality.

In contrast, high soil nutrient levels might not directly indicate that maintenance is needed, as they could result from normal soil conditions or previous system function, not necessarily a malfunction. Regular visibility checks are part of routine maintenance but do not indicate a need for maintenance by themselves; they help identify issues before they become serious but are not a clear indicator. Low effluent output can suggest potential problems but without further context, it may not always necessitate maintenance; it could be a temporary fluctuation. Therefore, consistent water logging is a clear and pressing sign that maintenance should be considered.