Know Your Environment. Protect Your Health.

Cyanide

Avon 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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019N/A00N/A
2020ND60ND
2021N/A00N/A
2022ND10ND
2023ND60ND

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
2018-03-05D8C0238-03IOCND
2018-03-05D8C0238-04IOCND
2018-03-05D8C0238-05IOCND
2018-03-05D8C0238-06IOCND
2018-03-05D8C0238-07IOCND
2018-03-05D8C0238-08IOCND
2018-03-05D8C0238-01IOCRND
2018-03-05D8C0238-02IOCND
2020-09-18IOC1 200590958ND
2020-09-18IOC1 200590944ND
2020-09-18IOC1 200590957ND
2020-09-18IOC1 200590959ND
2020-09-18IOC1 200590960ND
2020-10-27IOC1 200595558ND
2022-04-22CL16578ND
2023-03-02CN54352ND
2023-03-02CN54353ND
2023-03-03CN54370ND
2023-03-03CN54371ND
2023-03-03CN54372ND
2023-09-21CP05612ND