In 2007, the city of Bryan, Ohio applied to U.S. EPA to designate the Michindoh Aquifer as a "sole-source" aquifer. That designation means the aquifer is the only source of drinking water for people in a nine-county area that includes parts of three states.

March 2013 Update - Based on comments received in April 2010, a scoping study was conducted to assess available geologic information which would support a designation determination. Based on the study findings, EPA requested further information from the City of Bryan, Ohio, the author of this sole source aquifer designation petition. Until this information is received, EPA has determined that sole source aquifer designation for this petition is indefintely suspended.

The following documents provide information on this consideration.

• Comments Prompt Further Geological Study of Michindoh Aquifer (PDF)(1 pg, 106 K, June 2010)
  EPA fact sheet
• Comment Period Extended on Michindoh Sole-Source Aquifer Petition (PDF)(4 pp, 252 K, January 2010)
  fact sheet
• EPA response letter to requests for Michindoh comment period extension (PDF)(3 pp, 36 K, Jan. 29, 2010)
  EPA response to Michigan State Representative Kurtz
• Transcript of Michindoh Aquifer hearing (PDF)(72 pp, 234 K, Jan. 13, 2010)
• Michindoh presentation from EPA hearing (PDF)(17 pp, 423 K, Jan. 13, 2010)
• Aquifer Hearing Scheduled; Comment Period Extended (PDF)(1 pg, 2 MB, November 2009)
  EPA fact sheet
• Michindoh Proposed Sole Source Aquifer Area (PDF)(1 pg, 226 K, July 2009)
  Figure 16 (Revised) Area Map showing aquifer boundaries and the location of public water systems in the area
• Michindoh 2009 correspondence (PDF)(26 pp, 1 MB, January - July 2009)
• Michindoh Sole Source Aquifer Petition (PDF)(69 pp, 367 K, 2007)