Know Your Environment. Protect Your Health.

Cyanide

Sharon Water & Sewer Commission

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-12-20CC18174ND
2018-12-20CC18175ND
2018-12-20CC18173ND
2019-12-18CE90115ND
2019-12-18CE90117ND
2019-12-18CE90116ND
2020-12-16CH33643ND
2020-12-16CH33645ND
2020-12-16CH33644ND
2021-12-15CJ99309ND
2021-12-15CJ99310ND
2021-12-15CJ99311ND
2022-12-07CM99871ND
2022-12-07CM99873ND
2022-12-07CM99872ND
2023-12-06CP61721ND
2023-12-06CP61723ND
2023-12-06CP61722ND