Monitoring Schedules

Ohio’s public water systems are required to monitor for a variety of contaminants on a regular basis to determine whether or not they are meeting drinking water standards, also known as Maximum Contaminant Levels (MCLs). Each system has their own schedule which is based upon the type and size of the system, their source of water, and previous monitoring. 

Monitoring schedules for each system are available below. The schedules are grouped by county, and each county link contains the entry point and distribution schedules for all of the public water systems in the county that were mailed schedules. Once you select a county, you can use "Edit" and then "Find" to locate a particular public water system’s schedule(s) by typing in a PWS ID number or PWS name (or click on the Binocular icon for searches).

• Ken Baughman - DBPs; Lead and Copper
• Kathy Pinto - Inorganics; Asbestos; VOCs 
• Wendy Sheeran - Nitrate; SOCs; Radiological
• Local Ohio EPA district office - Total coliform bacteria; Lead and copper

When public water systems fail to monitor in accordance with their schedules, Ohio EPA issues monitoring violations. Before issuing a violation to the system, Ohio EPA publishes lists of apparent monitoring violations, to give the system or the laboratory a final opportunity to submit sample results. To receive notifications by email, subscribe to the cmcuinfo elecronic mailing list.

Archived monitoring schedules:

Ohio EPA sends out revised schedules on a monthly basis. This site will be updated whenever revised schedules are generated. Click here to view the current list of systems sent revised schedules: October 2011
If you have any questions regarding the specific monitoring requirements, please contact one of the following CMCU members at (614) 644-2752: