Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cyanide

Jordan Valley Water Conservancy District

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND10ND
2014N/A00N/A
20150.667 ppb31ND - 2.00 ppb
20160.500 ppb82ND - 2.00 ppb
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 150 ppb

The EWG Health Guideline of 150 ppb for cyanide 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.

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for cyanide, established in 1992, was based on a 1955 toxicity study conducted in laboratory animals. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Result
2012-05-03ND
2012-07-18ND
2013-06-26ND
2015-01-132.00 ppb
2015-03-30ND
2015-07-21ND
2016-02-16ND
2016-02-16ND
2016-02-25ND
2016-02-25ND
2016-03-15ND
2016-04-052.00 ppb
2016-04-052.00 ppb
2016-04-20ND
2017-01-18ND
2017-08-14ND