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About DDAGW

The Division of Drinking and Ground Waters ensures compliance with the federal Safe Drinking Water Act and evaluates potential threats to source waters that supply Ohio's more than 5,000 public drinking water systems. The division has a lead role for statewide ground water protection in cooperation with other state and federal agencies, implements a ground water quality monitoring program, and provides technical assistance to the agency's waste management divisions. More...

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Interim Guidance for Temporary Salt Storage

This document is specifically designed to provide guidance associated with temporary excess salt storage resulting from the 2011/2012 deicing season. Many public and private entities were not able to utilize all the salt that they were contractually obligated to use during the 2011/2012 season. As a result, many operators are finding themselves in a position to store excess salt or pay for storage to their associated distributor. For more information, contact Ohio EPA Division of Surface Water's Storm Water Program.


Recommendations for Geothermal Heating and Cooling Systems

Geothermal heating and cooling uses the relatively constant temperature of the earth to heat and cool homes and businesses with 40% to 70% less energy than conventional systems. In winter, the relative warmth from the ground or ground water is transferred to the building, and in summer the process is reversed and the heat of the building is transferred to the earth or ground water. This document provides recommendations to help ensure that geothermal heating and cooling systems are installed in a manner that will prevent ground water contamination, will protect drinking water sources and public health, and help protect the owner’s investments.


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Contact the Division of Drinking and Ground Waters
Mailing Address: P.O. Box 1049, Columbus, OH 43216-1049
Street Address: 50 West Town Street, Suite 700 Columbus, OH 43215
Phone: (614) 644-2752 ~ Fax: (614) 644-2909 ~ E-mail
Emergency Contacts ~ Staff Contacts and Expertise ~ Electronic Mailing Lists
Emergency Response Hotline (800) 282-9378

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