Know Your Environment. Protect Your Health.

Cyanide

Tangipahoa Parish Water District

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND220ND
2019N/A00N/A
2020ND70ND
2021ND50ND
2022N/A00N/A
2023ND80ND

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
2018-01-2935371217004ND
2018-01-2935371217003ND
2018-01-2935371217002ND
2018-01-2935371217001ND
2018-01-2935371217001ND
2018-01-2935371217002ND
2018-01-2935371217003ND
2018-01-2935371217004ND
2018-05-0735391332001ND
2018-05-0735391332002ND
2018-05-0735391332002ND
2018-05-0735391332001ND
2018-12-03B1805766-002ND
2018-12-03B1805766-005ND
2018-12-03B1805766-003ND
2018-12-03B1805766-002ND
2018-12-03B1805766-001ND
2018-12-03B1805766-005ND
2018-12-03B1805766-004ND
2018-12-03B1805766-003ND
2018-12-03B1805766-001ND
2018-12-03B1805766-004ND
2020-03-02B2001157-001ND
2020-11-16B2006150-003ND
2020-11-16B2006150-004ND
2020-11-16B2006150-005ND
2020-11-16B2006190-001ND
2020-11-16B2006150-001ND
2020-11-16B2006150-002ND
2021-11-0135675416004ND
2021-11-0135675416005ND
2021-11-0135675416003ND
2021-11-0135675416002ND
2021-11-0135675416001ND
2023-03-28B2301423-001ND
2023-10-25B2304622-001ND
2023-10-25B2304622-002ND
2023-11-06B2304860-001ND
2023-11-06B2304860-002ND
2023-11-06B2304860-003ND
2023-11-06B2304860-004ND
2023-11-06B2304860-005ND