Columbus, Ohio water may be affected by company pumping water from quarry in order to access limestone

An article in The Columbus Dispatch provides that a company ambitious to mine limestone has been pumping 40 million gallons of water per day from one quarry to another in a city well field in order to access the limestone underneath the water. According to a hydrologist with the U.S. Geological Survey, this process, also known as dewatering, could add iron and other minerals to the city water which would increase the cost of treating the water. This is the first time that this process has been conducted in the well field just south of I-270 near the Scioto River, which provides water to a treatment plant supplying almost 200,000 people with water. However, Olen Corp. received a water-pollution permit from the state Division on Mineral Resources Management and city water officials do not expect changes in water quality.