Passive Treatment Systems

Passive treatment systems are natural or minimally maintained methods used to clean contaminated water, often from mining or industrial sources. They rely on natural processes like sedimentation, filtration, and biological activity (such as plants and bacteria) to remove harmful pollutants without the need for active chemical addition or mechanical equipment. These systems typically include features like wetlands, limestone drains, or settling ponds, designed to reduce acidity, metals, and other contaminants. They are cost-effective, sustainable, and designed to work with nature to improve water quality over time.