Well

{
  "id": "MLC-T-ENV-030277",
  "term": "Well",
  "field": "Environment",
  "definition": "1. A bored, drilled, or driven shaft, or a dug hole, whose depth is greater than the largest surface dimension and whose purpose is to reach underground water supplies or oil, or to store or bury fluids below ground.\n\n2. A bored, drilled, or driven shaft or a dug hole whose depth is greater than the largest surface dimension; an improved sinkhole; or a subsurface fluid distribution system.\n\n3. A hole sunk into the ground to reach a supply of water.\n\n4. Any shaft or pit dug or bored into the earth, generally of a cylindrical form, and often walled with bricks or tubing to prevent the earth from caving in.\n\n5. 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.[40 CFR 146.3 (CFR 2018)]",
  "subject": "Land, waste and cleanup",
  "references": [
    "Drinking Water Technical & Legal Terms; Terms of Environment",
    "Underground Injection Control Glossary",
    "Superfund for Students and Teachers Glossary",
    "40 CFR 260.10 (CFR 2013)",
    "40 CFR 144.3 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/well/"
}