Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cyanide

Bladen County Water Dist-West Bladen

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
2013ND30ND
2014ND30ND
2015ND20ND
2016ND30ND
2017ND30ND

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
2012-01-048527-010412-L06IND
2012-04-048527-040412-E08IND
2013-03-068527-030613-L06IND
2013-07-038527-070313-E09IND
2013-12-048527-120413-E11IND
2014-01-028527-010214-E08IND
2014-04-028527-040214-E04IND
2014-04-028527-040214-E05IND
2015-01-07ND
2015-04-01ND
2016-03-028527-030216-L06IND
2016-07-058527-070516-E09IND
2016-12-068527-120616-E11IND
2017-01-048527-010417-E08IND
2017-04-058527-040517-E04IND
2017-04-058527-040517-E05IND