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EWG's Tap Water Database — 2021 UPDATE

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Cyanide

Valencia Water Company

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.

MORE ABOUT THIS CONTAMINANT

 

62

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016ND60ND
2017ND190ND
2018ND180ND
2019ND190ND

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
2016-06-239590-048-0956ND
2016-06-239590-047-0918ND
2016-06-239590-073-0836ND
2016-06-239590-004-0932ND
2016-06-239590-003-0857ND
2016-07-219590-017-0955ND
2017-07-069588-021-0910ND
2017-07-069588-052-0940ND
2017-07-069588-062-0920ND
2017-07-139588-005-0839ND
2017-07-139588-026-0819ND
2017-07-139588-024-0808ND
2017-07-139588-018-0851ND
2017-07-139588-058-0906ND
2017-07-209588-051-1030ND
2017-07-209588-025-0905ND
2017-07-209588-046-0920ND
2017-07-209588-049-0955ND
2017-07-209588-070-0940ND
2017-07-209588-017-1010ND
2017-07-279588-073-0750ND
2017-07-279588-047-0820ND
2017-07-279588-004-0825ND
2017-07-279588-048-0945ND
2017-07-279588-003-0845ND
2018-07-059590-062-1000ND
2018-07-059590-052-1020ND
2018-07-059590-021-0947ND
2018-07-129590-026-0810ND
2018-07-129590-024-0800ND
2018-07-129590-018-0835ND
2018-07-129590-058-0845ND
2018-07-129590-005-0820ND
2018-07-199590-051-0905ND
2018-07-199590-070-0805ND
2018-07-199590-049-0850ND
2018-07-199590-046-0825ND
2018-07-199590-017-0935ND
2018-07-199590-025-0750ND
2018-07-269590-047-0955ND
2018-07-269590-073-0850ND
2018-07-269590-003-0910ND
2018-07-269590-004-1010ND
2019-07-109590-018-1115ND
2019-07-109590-005-1045ND
2019-07-109590-058-1140ND
2019-07-109590-024-0910ND
2019-07-109590-026-0945ND
2019-07-119590-021-0925ND
2019-07-119590-052-1045ND
2019-07-119590-062-1000ND
2019-07-179590-017-0910ND
2019-07-179590-051-1005ND
2019-07-179590-025-0840ND
2019-07-179590-049-0840ND
2019-07-179590-070-0920ND
2019-07-179590-046-0945ND
2019-07-249590-047-0930ND
2019-07-249590-004-1010ND
2019-07-249590-003-0955ND
2019-07-249590-073-0915ND
2019-11-219590-048-1120ND