Stormwater treatment area

Stormwater treatment areas (STAs) are constructed wetlands divided into flow-through treatment cells that remove nutrients from agricultural and urban runoff water. The nutrients are consumed through plant growth, and captured by accumulation of dead plant material in a layer of sediment. STAs were introduced around the Everglades National Park in an effort to reduce nutrient levels in water flowing towards the park. STAs have been estimated to reduce phosphorus levels by about 80%.^[1]