Chemical oxygen demand (COD) is an indicator test commonly used to indirectly measure the amount of organic compound pollutants in water. Most applications of COD determine the amount of organic pollutants found in surface water (e.g. lakes and rivers) or wastewater. Elevated COD levels can indicate surface water influences directly on groundwater.
ACTION IS OPTIONAL
Chemical Oxygen Demand (COD) levels were detected in your water sample to exceed the typical range in Ohio. There is no health-based standard for chemical oxygen demand.