Cyanide

GENERAL INFORMATION
Cyanide is a carbon-nitrogen chemical unit which combines with many organic and inorganic compounds. The most commonly used form, hydrogen cyanide, is mainly used to make compounds and other synthetic fibers and resins. The major source of cyanide in drinking water is discharge from industrial chemical factories.

HEALTH EFFECTS
Some people who drink water containing cyanide well in excess of the maximum contaminant level (MCL) for many years could experience nerve damage or problems with their thyroid.

Standard value 1: 
200.00
Standard units 1: 
ppb
Input units: 
ug/L
ppb
Contaminant group: 
Inorganic trace constituent
Standard type 1: 
MCL
Action is recommended 1: 

MCL ADVISORY - ACTION IS HIGHLY RECOMMENDED
Cyanide levels were detected in your water sample to exceed the maximum contaminant level (MCL).

Action is optional 1: 

ACTION IS OPTIONAL
Cyanide levels were detected in your water sample but do not exceed the maximum contaminant level.

Major sources in drinking water: 
Discharge from steel/metal factories; Discharge from plastic and fertilizer factories
Treatment options: 

TREATMENT OPTIONS
The following treatment method(s) have proven to be effective for removing cyanide to below 0.2 mg/L or 200 ppb:

  • granular activated carbon in combination with packed tower aeration.
Website resources: 

WEBSITE RESOURCES

Fact sheets: 

FACT SHEETS

ATSDR ToxFAQs Fact Sheet - Cyanide