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Information for Water Well Owners

Information for Water Well Owners

The state of Ohio has been collecting water well records since 1946 and well sealing reports since 1986. Currently, the Division of Geological Survey maintains the database that contains over 850,000 well records and approximately 100,000 well sealing reports.

Search for Water Well Data

There are seven different ways you can search the data. Click each search method to launch the application.

Map-based -
Custom data
County, township, & road -
Address -


Get Assistance with a Search

If you prefer to have a search conducted for you by one of our hydrogeologists, please provide as much of the following information as possible:

  • County
  • Township
  • Address
  • Person’s name that hired the driller
  • Approximate year the well was drilled

Submit the information by e-mail to geo.survey@dnr.state.oh.us or by phone at (614) 265-6740

Additional Resources

List of Registered Contractors

Anyone in the business of working on private water systems in Ohio must register with Ohio Department of Health (ODH) as a Private Water Systems Contractor. Homeowners, who wish to construct, alter, or seal their private water systems on their primary or secondary properties, are required to register (without the bonding requirement) as of April 1, 2011. Contact both the local health department and the ODH Private Water Systems Program about Property Owner Registration.

The lists of registered private water systems contractors can be found using the links below. The list is regularly updated, so check back if you cannot find a contractor listed, or call the ODH Private Water Systems Program at (614) 644-7558.

Contact the ODH Private Water Systems Program for information regarding the previous years registration.


NGWA Well Owners Guide  Comprehensive manual with information on proper well construction, routine maintenance, water testing, & more.

Ohio Observation Well Network  ODNR web application to search observation well data.

Private Water Systems Information for Homeowners   Ohio Department of Health information about contractors, financial resources, educational services, and more.

Water Quality Interpretation Tool  OSU Extension Service. Get help understanding lab results of water sample testing and what actions to take.

wellowner.org  Information on water well basics, well maintenance, water quality, and water testing.