Action Level

{
  "id": "MLC-T-ENV-000354",
  "term": "Action Level",
  "field": "Environment",
  "definition": "1. The level of lead or copper which, if exceeded in over 10% of the homes tested, triggers treatment or other requirements that a water system must follow.\n\n2. The level of lead or copper which, if exceeded, triggers treatment or other requirements that a water system must follow.\n\n3. The concentration of lead or copper in water specified at Code of Federal Regulations 141. 80(c) which determines, in some cases, the treatment requirements contained in subpart I of this part that a water system is required to complete.\n\n4. A term used to identify the level of indoor radon (http://www.epa.gov/radon/index.html) at which remedial action is recommended. (EPA's current action level is 4 pCi/L in the air.)\n\n5. Home owners should take action to lower radon levels indoors when levels are at or above 4 pCi/L.\n\n6. Concentration of lead or copper in water specified in § 141.80(c) which determines, in some cases, the treatment requirements contained in subpart I of this part that a water system is required to complete.\n\n7. Concentrations of lead or copper in water as specified in § 141.80(c) which determines, in some cases, the treatment, lead service line replacement, and tap sampling requirements that a water system is required to complete. The action level for lead is 0.015 mg/L and the action level for copper is 1.3 mg/L.\n\n8. concentration of lead or copper in water specified at Code of Federal Regulations 141. 80(c) which determines, in some cases, the treatment requirements contained in subpart I of this part that a water system is required to complete.\n\n9. Concentrations of lead or copper in water as specified in § 141.80(c) which determines requirements under subpart I of this part. The action level for lead is 0.015 mg/L and the action level for copper is 1.3 mg/L.",
  "subject": "Health and safety",
  "references": [
    "Safe Drinking Water Act Glossary",
    "Drinking Water Glossary",
    "Drinking Water Technical & Legal Terms",
    "Indoor Air Quality Glossary",
    "RRNC Glossary of Terms",
    "40 CFR 141.2 (CFR 2018)",
    "National Primary Drinking Water Regulations: Proposed Lead and Copper Rule Revisions Proposed Rule 84 FR 61684",
    "Drinking Water Technical and Legal 2009",
    "86 FR 4198 ; 40 CFR 141.2 (CFR 2021)"
  ],
  "url": "https://mlchart.com/terminology/environment/action-level/"
}