Ohio's diverse environment ranges from the shores of Lake Erie in the north to the foothills of the Appalachian Mountains in the south.
* **Protected Areas:** The state is home to the Cuyahoga Valley National Park, Wayne National Forest, and a robust system of 75 state parks (including Hocking Hills, Mohican, and Maumee Bay) managed by the Ohio Department of Natural Resources (ODNR). * **Air Quality:** Generally good statewide. However, during hot summer months, major metro areas may experience elevated ozone levels, prompting air quality advisories. * **Water Quality:** Lake Erie is a vital freshwater resource. The Ohio EPA actively monitors water quality to combat issues like harmful algal blooms (HABs) in the western basin of Lake Erie, largely driven by agricultural runoff. * **Sustainability & Recycling:** Ohio has active solid waste districts that promote recycling. The state is increasingly investing in renewable energy, particularly utility-scale solar farms in the southern and western regions, and offshore wind research on Lake Erie. * **Conservation:** The Cuyahoga River, which famously caught fire in 1969, is now a symbol of environmental recovery and successful conservation efforts spurred by the Clean Water Act.