Overview
Cyanide is a toxic chemical that causes central nervous system and thyroid toxicity. Water contamination is generally the result of metal mining and chemical industry waste, runoff from agriculture and road salts used for melting ice.
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 150 ppb
The EWG Health Guideline of 150 ppb for cyanide (free) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to the brain and nervous system.
ppb = parts per billion
National Standard Exists
Health Concerns:
Harm to the brain and nervous system
Harm to the thyroid
Harm to the central nervous system
