The E-Check program is a vehicle emissions testing program designed to identify motor vehicles emitting excessive levels of pollutants into the air. The test, required in 14 counties every two years, applies to gasoline and diesel-powered vehicles up to 25 years old and weighing 10,000 pounds or less. Agricultural vehicles are exempt. Drivers in Mercer County are not required to test their vehicles for emissions. Brownfield properties located in economically disadvantaged areas are eligible for a greater tax credit from the state than properties outside these areas.
Properties located outside economically disadvantaged areas are eligible for a lesser tax credit.
These sites may be operating or abandoned industrial facilities, contaminated or potentially contaminated public water supplies with the source or contamination undiscovered, or other locations where the environmental media is contaminated through a variety of waste management activities. Mercer County has three sites listed in the MSL, all of which are located in Celina. For each water system, the table presents an estimate of the population served, the primary water source, estimated daily usage, and treatment plant capacity. Mercer county is split by a major watershed divide. The north half of the county is drained by the St. Mary's River, which flows north to the Maumee River at Fort Wayne, Indiana, then to Lake Erie.