American Electric Power 800-672-2231 Celina Municipal Utilities (including water & sewer) (including water & sewer) 419-586-2311 Dayton Power & Light (DP&L) 800-433-8500 Dominion East Ohio Gas 800-362-7557 Mercer County Sanitary Dept 419-584-1982 Midwest Electric 800-962-3830 St Marys Municipal Utilities 419-394-3303