Injection well

{
  "id": "MLC-T-ENV-014393",
  "term": "Injection well",
  "field": "Environment",
  "term_source": "Injection Well",
  "definitions": [
    "1. A well into which fluids are injected for purposes such as waste disposal, improving the recovery of crude oil, or solution mining.\n\n2. Injection wells are defined (in Title 40, Code of Federal Regulations, Section 144.3) as a bored, drilled, or driven shaft whose depth is greater than the largest surface dimension; or, a dug hole whose depth is greater than the largest surface dimension; or, an improved sinkhole; or, a subsurface fluid distribution system into which fluids (any material or substance which flows or moves whether in a semisolid, liquid, sludge, gas or any other form or state) are emplaced.\n\n3. Units into which hazardous waste is permanently disposed of by injection 0.25 miles below an aquifer with an underground source of drinking water (as defined under the SDWA).\n\n4. Well into which fluids are injected. (See also “underground injection”.)\n\n5. Refers to a well constructed for the purpose of injecting treated wastewater directly into the ground. Wastewater is generally forced (pumped) into the well for dispersal or storage into a designated aquifer. Injection wells are generally drilled into aquifers that don't deliver drinking water, unused aquifers, or below freshwater levels.\n\n6. A steel- and concrete-encased shaft into which hazardous waste is deposited by force and under pressure.\n\n7. Well using the technology of placing fluids underground in porous formations of rocks, through a well or other conveyance. The fluids may be water, wastewater, or water mixed with chemicals. Regulations for disposing of waste this way vary depending on type of waste. RCRA hazardous waste is placed in highly regulated (Class 1) wells.\n\n8. Well into which fluids are being injected.\n\n9. A well used to inject under pressure a fluid (liquid or gas) into the subsurface.",
    "A method for final disposal of solid waste on land. The refuse is spread and compacted and a cover of soil applied so that effects on the environment (including public health and safety) are minimized."
  ],
  "subject": "Built environments",
  "references": [
    "Terms of Environment",
    "Underground Injection Control Terms",
    "EPA Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources: Progress Report at http://www.epa.gov/hfstudy/pdfs/hf-report20121214.pdf",
    "40 CFR 260.10 (CFR 2013)",
    "USGS Water Science Glossary",
    "EPA Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources Glossary at www.yosemite.gov/sab",
    "EPA Electronic Report on the Environment at http://www.epa.gov/roe/glossary.htm",
    "40 CFR 270.2 (CFR 2018); 40 CFR 146.3 (CFR 2018); 40 CFR 144.3 (CFR 2018)",
    "Office of Underground Storage Tanks Technical Terms; Glossary of Technical Terms: Office of Underground Storage Tanks",
    "Terms of Env"
  ],
  "url": "https://mlchart.com/terminology/environment/injection-well/"
}