Public supply well and aerator

Anoxic groundwater pumped from the embayment-uplands aquifers for municipal supply is oxygenated as it cascades over aerator trays. The iron and manganese that are dissolved in the water precipitate and are filtered from the water. Photo is from USGS Circular 1356: Water Quality in the Mississippi Embayment–Texas Coastal Uplands Aquifer System and Mississippi River Valley Alluvial Aquifer, South-Central United States, 1994