As a precautionary response to COVID-19, Ohio EPA is currently operating with most staff working remotely. If you are working with our staff on a current project and you know the name of the employee you are working with, email them at or call them directly. The Agency website has contact information for every district, division, and office. To report a spill or environmental emergency, contact the spill hotline (800) 282-9378 or (614) 224-0946. This number should only be used for emergencies. For all other calls, please contact Ohio EPA’s main phone line at (614) 644-3020 or the main line for the division or office you are trying to reach.

After March 23, our district offices and Central Office will be temporarily closed and will have increasingly limited ability to receive deliveries, plans, etc. All entities are encouraged to submit plans, permit applications, etc., electronically where there are existing avenues to do so, such as the eBusiness Center (eBiz). Please refer to the list of available services on the main eBiz webpage. We encourage you to make use of all that apply, even if you have not used eBiz in the past. Plans under 25 MB can be emailed. For large plans over 25 MB, entities should work with the reviewer/division to upload via LiquidFiles. Directions for submitting docs via LiquidFiles is available on YouTube. We apologize for the inconvenience and thank you in advance for your understanding. If you wish to send hard copies of documents to any of Ohio EPA’s district offices, the best method to ensure we receive these documents is to send them via U.S. Mail. Since all offices are closed, deliveries outside of U.S. Mail (FedEx, UPS) will likely be returned because the offices are closed and deliveries cannot be made.


Study of Minor Great Black Swamp Tributaries Released

Public Comment Period Open through June 29  

Today, Ohio EPA today released a study examining water and sediment chemistry, habitat, fish, and other aquatic life from 50 small streams that flow into the Maumee River in northwest Ohio. These small streams drain approximately 1,040 square miles in portions of Defiance, Fulton, Hancock, Henry, Paulding, Putnam, and Wood counties.  

Ohio EPA is accepting public comments about the study, which can be found online, through June 29, 2020.

The study shows that most small Great Black Swamp tributaries have healthy fish and macroinvertebrate populations. Overall, water quality in the smaller streams has improved compared to results from a previous study more than two decades ago.

Eighty-nine percent (80 of 90) of the stream locations sampled are meeting the aquatic life goals supporting a variety of fish and insect species. Sensitive species such as the Eastern sand darter have re-established throughout the watershed, indicating improving stream conditions.

Lower concentrations of mercury in fish caught in Bad Creek, North Turkeyfoot Creek and South Turkeyfoot Creek have led to less strict fish consumption advisories for channel catfish, yellow bullhead catfish, and common carp.

The study also found many streams are not meeting human recreation-based water quality standard for E. coli bacteria. Silt buildup caused by streambank erosion and soil runoff around agricultural fields was common as was channelization for agricultural drainage. Elevated nutrient levels in the creeks are concerning, particularly for the village of Delta, which draws drinking water from Bad Creek. These smaller streams discharge nutrients to the Maumee River and then to Lake Erie where they contribute to harmful algae blooms that occur annually in the Western Lake Erie Basin.

The study recommends targeting areas where the highest nutrient enrichment was found to reduce loads of phosphorus and nitrogen. Suggestions include continuing focus on improving fertilizer applications to crop fields, improving livestock manure management, conservation tillage, and improving riparian buffers around agricultural fields. Additionally, unsewered communities with failing septic systems are discharging bacteria and nutrients that impact local water quality.

The biological and water quality study is designed to assess the effects of various land uses, evaluate the influences of agricultural, industrial, and commercial discharges and spills, and assess the performance of permitted wastewater treatment plants. The study also evaluates the quality of fish and macroinvertebrate communities in the streams, compares results with historic conditions, and determines if streams are meeting designated aquatic life and human recreation uses.

Further details about the study, data, and maps are contained in the report. The study is the second step in Ohio EPA’s five-step Total Maximum Daily Load process.

Findings in the report along with public comments received will be developed into a Total Maximum Daily Load report, which is a plan to improve water quality in the watershed through potential permit limits on regulated dischargers and/or nonpoint source runoff reduction projects, whichever may be necessary to address water quality impairment at any given location. Ohio EPA works with local communities and watershed groups to implement projects and strategies to achieve water quality goals. 

To comment on the study, email or write to TMDL Program, Ohio EPA Division of Surface Water, P.O. Box 1049, Columbus, OH 43216-1049. Comments are due by 5 p.m. June 29, 2020.


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.

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