Microcystin-LR

Safety Summary

Regulatory Status

Sources

These citations are the ones recorded for the human adult context.

• US EPA: Cyanotoxins in Drinking Water — Health Advisories for Microcystins and Cylindrospermopsin REGULATORY · 2015
• WHO: Cyanobacterial Toxins — Microcystin-LR in Drinking Water: Background Document for Development of WHO Guidelines REGULATORY · 2003
• IARC Monographs Volume 94 (2010): Microcystin-LR — Group 2B Evaluation (Possibly Carcinogenic to Humans) REGULATORY · 2018
• Drinking Water Health Advisories (HAs) | US EPA REGULATORY
• Guidelines for drinking-water quality: fourth edition incorporating the first, second and third addenda REGULATORY
• 2015 Drinking Water Health Advisories for Two Cyanobacterial Toxins REGULATORY
• IARC Monographs, List of Classifications REGULATORY · 2026
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY
• Permissible Exposure Limits – OSHA Annotated Table Z-1 REGULATORY
• EPA CompTox CTX API: predicted properties for DTXSID3031654 (Microcystin-LR) REFERENCE

Same data as the API response, which is open and needs no key. The full per-record source list is available to authenticated callers.