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EWG's Tap Water Database — 2021 UPDATE

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Cyanide

Westbury WD

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

 

58

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
2014ND110ND
2015ND110ND
2016ND130ND
2017ND120ND
2018N/A00N/A
2019ND110ND

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
2014-05-291405K20-006-PRIND
2014-05-291405K20-009-PRIND
2014-05-291405K20-007-PRIND
2014-05-291405K20-004-PRIND
2014-05-291405K20-008-PRIND
2014-05-291405K20-011-PRIND
2014-05-291405K20-001-PRIND
2014-05-291405K20-002-PRIND
2014-05-291405K20-010-PRIND
2014-05-291405K20-005-PRIND
2014-05-291405K20-003-PRIND
2015-05-261505H81-004ND
2015-05-261505H81-003-PRIND
2015-05-261505H81-005-PRIND
2015-05-261505H81-008-PRIND
2015-05-261505H81-010-PRIND
2015-05-261505H81-007-PRIND
2015-05-261505H81-002-PRIND
2015-05-261505H81-006-PRIND
2015-05-261505H81-001-PRIND
2015-05-261505H81-009-PRIND
2015-06-091506715-001-PRIND
2016-05-231605K35-001-PRIND
2016-05-231605K37-009-PRIND
2016-05-231605K34-001-PRIND
2016-05-231605K37-004-PRIND
2016-05-231605K37-003-PRIND
2016-05-231605K37-005-PRIND
2016-05-231605K37-001-PRIND
2016-05-231605K37-008-PRIND
2016-05-231605K37-007-PRIND
2016-05-231605K35-002-PRIND
2016-05-231605K37-002-PRIND
2016-05-231605K37-006-PRIND
2016-12-19707142002ND
2017-05-227019227007-PRIND
2017-05-227019227003-PRIND
2017-05-227019227002-PRIND
2017-05-227019227009-PRIND
2017-05-227019227006-PRIND
2017-05-227019227001-PRIND
2017-05-227019227012-PRIND
2017-05-227019227011-PRIND
2017-05-227019227004-PRIND
2017-05-227019227008-PRIND
2017-05-227019227010-PRIND
2017-05-227019227005-PRIND
2019-06-0470919270010-PRIND
2019-06-047091927008-PRIND
2019-06-047091927004-PRIND
2019-06-047091927003-PRIND
2019-06-047091927007-PRIND
2019-06-047091927005-PRIND
2019-06-047091927011-PRIND
2019-06-047091927009-PRIND
2019-06-047091927001-PRIND
2019-06-047091927002-PRIND
2019-06-047091927006-PRIND