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Drinking WaterThe City of Columbus sits on a very abundant aquifer system. Millions of years ago the receding glaciers carved a deep trough through the center of what is now Bartholomew County. As they receded, they filled this trough with tons of large gravel and sand. The shape of this trough and the porous nature of the sand and gravel that fill it act as a funnel to provide an abundant water supply to the community. Drinking Water TreatmentThe Columbus Water Plant #1 is rated at 8 million gallons per day (MGD) and Plant #2 at 20 MGD, for a combined capability of 28 MGD of treated water. Each plant was built for iron and manganese removal. Various chemical treatments are utilized at each water treatment plant: Chlorine is fed for disinfection at both plants. Chlorine is also fed at both facilities as an oxidizer for iron. Potassium permanganate is fed at both plants as an oxidizer for manganese. Fluoride is fed at each facility to aid in the prevention of "dental cavities". Polymer is fed to the backwash supernatant at Plant #1 to aid in settling of solids in the reclamation process.
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