| source | facility | location |
| 0125040420 N003 | COLUMBUS SOUTHERLY WASTEWATER TREATMENT PLANT | LOCKBOURNE |
| 0125040420 N004 | COLUMBUS SOUTHERLY WASTEWATER TREATMENT PLANT | LOCKBOURNE |
| 0125040421 N003 | JACKSON PIKE WASTEWATER TREATMENT PLANT | COLUMBUS |
| 0125040421 N004 | JACKSON PIKE WASTEWATER TREATMENT PLANT | COLUMBUS |
| 0250110501 N001 | YOUNGSTOWN WASTEWATER TREATMENT FACILITY | YOUNGSTOWN |
| 0250110501 N002 | YOUNGSTOWN WASTEWATER TREATMENT FACILITY | YOUNGSTOWN |
| 1318172479 N005 | SOUTHERLY WASTEWATER TREATMENT CENTER | CUYAHOGA HEIGHTS |
| 1318172479 N006 | SOUTHERLY WASTEWATER TREATMENT CENTER | CUYAHOGA HEIGHTS |
| 1318172479 N007 | SOUTHERLY WASTEWATER TREATMENT CENTER | CUYAHOGA HEIGHTS |
| 1318172479 N008 | SOUTHERLY WASTEWATER TREATMENT CENTER | CUYAHOGA HEIGHTS |
| 1431070944 N001 | MILL CREEK WWTP | CINCINNATI |
| 1431070944 N002 | MILL CREEK WWTP | CINCINNATI |
| 1431070944 N003 | MILL CREEK WWTP | CINCINNATI |
| 1431070944 N004 | MILL CREEK WWTP | CINCINNATI |
| 1431070944 N006 | MILL CREEK WWTP | CINCINNATI |
| 1431070944 N007 | MILL CREEK WWTP | CINCINNATI |
| 1576000806 N001 | WATER POLLUTION CONTROL CENTER | CANTON |
| 1576000806 N002 | WATER POLLUTION CONTROL CENTER | CANTON |