The City has been proactive in pursuing measures to further protect its source waters. The City of Columbus treats the water to meet drinking water quality standards, but no single treatment protocol can address all potential contaminants. Run-off from agricultural fields is a concern in both the Scioto River and Big Walnut Creek watersheds. These include industrial activities, storm water runoff from developing areas, and a heavily traveled transportation network running alongside and over the water bodies. The drinking water source protection areas for the City of Columbus’ three water sources contain numerous potential contaminant sources, especially the protection area for the Dublin Road Water Treatment Plant (extending along the Scioto River). The Scioto River and Big Walnut Creek are even more susceptible because they are more accessible and less protected from spills. The ground water pumped at the Parsons Avenue plant is susceptible (compared to other ground water systems) because there is no significant clay overlying and protecting the aquifer deposits. All three sources of water have a relatively high susceptibility to contamination from spills or releases of chemicals. Where does Columbus get its water from? The City of Columbus water system uses surface water from the Scioto River and Big Walnut Creek, as well as ground water pumped from sand and gravel deposits of the Scioto River Valley.
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