Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cyanide

City of North Platte

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND120ND
2013ND20ND
2014N/A00N/A
2015ND100ND
2016ND20ND
2017ND10ND

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 Lab ID Result
2012-09-19186266ND
2012-09-19186263ND
2012-09-19186262ND
2012-09-19186261ND
2012-09-19186260ND
2012-09-19186259ND
2012-09-19186258ND
2012-09-19186257ND
2012-09-19186256ND
2012-09-19186255ND
2012-09-19186265ND
2012-09-26186264ND
2013-05-01230611ND
2013-05-01230612ND
2015-07-28376914ND
2015-07-29376908ND
2015-07-29376907ND
2015-07-29376906ND
2015-07-29376905ND
2015-07-29376913ND
2015-07-29376912ND
2015-07-29376911ND
2015-07-29376910ND
2015-07-29376909ND
2016-05-02ND
2016-05-02ND
2017-04-25ND