The Village of Ohio, Illinois recently commissioned their new water treatment plant to remove iron, manganese, arsenic, and color from the groundwater supply, by installing an integrated Tonka treatment system. A Dualator® VI, which incorporates aeration, detention and filtration, is used to remove the iron, manganese and arsenic. The unit is 11 feet in diameter and is designed to operate at 275 gpm. A Tonka ORGANIX™ anion exchange system was installed downstream of the Dualator® to remove dissolved organic compounds associated with color.