Passive and low-input wastewater systems are a type of wastewater treatment system that operate with minimal energy inputs, relying on natural processes to treat wastewater. These systems utilise passive treatment methods such as plants, gravel, and soil to remove contaminants and treat wastewater.

Water utilities can benefit from choosing passive and low-input wastewater systems due to their cost-effectiveness and low energy requirements. These systems can also be implemented in areas where traditional wastewater treatment infrastructure is not feasible, such as in rural or remote areas.

The water quality produced by passive and low-input wastewater systems can vary depending on the specific design and implementation. However, these systems can produce effluent that meets certain water quality standards and can be used for non-potable purposes such as irrigation and toilet flushing.

Overall, passive and low-input wastewater systems offer practical and sustainable solutions for water utilities seeking to treat wastewater in a cost-effective and environmentally friendly manner. These systems can be implemented in a variety of settings and can produce effluent that meet certain water quality standards.

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