Injection wells are used to dispose of appropriately treated fluids by placing them underground. The injection control program regulates the usage of this and prevents degradation of drinking water. There are six different classes of injection wells that are permitted by the EPA, four of which are regulated by FDEP. Class I wells are deep and are used for disposal of domestic and industrial wastewater below protected aquifers. All Class I injection wells are required to submit a monthly report that provides data of their monitoring regarding physical and chemical characteristics. They are monitored so if a problem does start to occur, it can be stopped before it reaches the drinking water. Other deep injection wells are Class II wells which dispose of water from the production of oil or gas; these are regulated by the EPA.