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Ohio EPA Issues Latest Water Quality Report

Ohio EPA has released its latest statewide water quality report. The biennual document describes the general condition of Ohio’s waters and includes a list of impaired waters that are not meeting their federal or state water quality goals, as well as waters that have improved to meet their goals.

Among the more significant items in this year's report:

  • Ten new assessment units were added for the Ohio River mainstem.
  • The central basin of Lake Erie remains in attainment for recreation use (based on algae assessments).
  • Microcystin concentrations have declined in Lake Erie’s Sandusky Bay since 2020. If this trend continues over the next two years, the Bay could be designated for attainment for recreation use (based on algae assessments).

The Agency hosted a virtual webinar earlier this year to provide the public more information about the draft list of the state’s impaired waters. A copy of the final report, along with the Agency’s response to public comments (located in Section D) are available for review on Ohio EPA’s website.

A copy of the final report will be submitted to U.S. EPA.



The Ohio Environmental Protection Agency was created in 1972 to consolidate efforts to protect and improve air quality, water quality and waste management in Ohio. Since then, air pollutants dropped by as much as 90 percent; large rivers meeting standards improved from 21 percent to 89 percent; and hundreds of polluting, open dumps were replaced with engineered landfills and an increased emphasis on waste reduction and recycling.