Know Your Environment. Protect Your Health.

Cyanide

City of Pilot Point

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND10ND
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
2019-05-30Q1930236008ND
2020-01-16Q2001732039ND
2020-01-16Q2001732040ND
2020-01-16Q2001732041ND
2020-01-16Q2001732042ND
2020-01-16Q2001732043ND
2020-05-11Q2018213010ND
2022-10-13Q2231068017ND
2023-08-16Q2334321010ND
2023-08-16Q2334321011ND
2023-08-16Q2334321012ND
2023-11-06Q2347478024ND
2023-11-06Q2347478025ND
2023-11-06Q2347803006ND