An injection well is a device that places fluid deep underground into porous rock formations, such as sandstone or limestone, or into or below the shallow soil layer. The fluid may be water, wastewater, brine, or water mixed with industrial chemical waste.
Deep injection well for disposal of hazardous, industrial and municipal wastewater; a "Class I" well under USEPA regulations.
Hazardous waste is waste that must be handled properly to avoid damaging human health or the environment. Waste can be hazardous because it is toxic, reacts violently with other chemicals, or is corrosive, among other traits. As of 2022, humanity produces 300-500 million metric tons of hazardous waste annually. Some common examples are electronics, batteries, and paints. An important aspect of managing hazardous waste is safe disposal. Hazardous waste can be stored in hazardous waste landfills, burned, or recycled into something new. Managing hazardous waste is important to achieve worldwide sustainability. Hazardous waste is regulated on national scale by national governments as well as on an international scale by the United Nations (UN) and international treaties.
North Seattle household hazardous waste collection facility.
Household Hazardous Waste separated for proper disposal
Large debris pile near to EPA's 'Household Hazardous Waste' collection PAD
The Valley of the Drums, a toxic waste dump in northern Bullitt County, Kentucky