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EWG's Tap Water Database — 2019 UPDATE

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Cyanide

Florin County Water 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND50ND
2014N/A00N/A
2015ND30ND
2016ND50ND
2017N/A00N/A

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
2012-05-305810-009-0956ND
2012-08-295810-003-0937ND
2013-04-155810-012-1325ND
2013-07-185810-007-0914ND
2013-12-125810-010-1304ND
2013-12-125810-007-0950ND
2013-12-125810-006-1427ND
2015-12-095810-003-1022ND
2015-12-095810-009-1136ND
2015-12-105810-002-1356ND
2016-04-285810-004-1100ND
2016-04-285810-012-0951ND
2016-09-085810-010-1204ND
2016-09-085810-007-0905ND
2016-09-085810-006-1242ND