Know Your Environment. Protect Your Health.

Cyanide

City of Broussard Water System

NOTE: City of Broussard Water System purchases water from Lafayette Utilities Water System which is required to test for cyanide. Sample information shown below was taken by Lafayette Utilities Water System.

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.

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND140ND
2020ND10ND
2021ND10ND
2022ND60ND
2023ND20ND

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

NOTE: City of Broussard Water System purchases water from Lafayette Utilities Water System which is required to test for cyanide. Sample information shown below was taken by Lafayette Utilities Water System.

Date Lab ID Result
2018-03-0535378308005ND
2018-03-0535378308001ND
2018-03-0535378308005ND
2018-03-0535378308004ND
2018-03-0535378308003ND
2018-03-0535378308002ND
2018-03-0535378308001ND
2018-03-0535378308002ND
2018-03-0535378308003ND
2018-03-0535378308004ND
2018-04-3035389627001ND
2018-04-3035389627001ND
2018-05-1435392629001ND
2018-05-1435392629001ND
2018-06-1935399735001ND
2018-06-1935399735001ND
2018-06-1935399735002ND
2018-06-1935399735003ND
2018-06-1935399735003ND
2018-06-1935399735002ND
2019-01-14B1900254-001ND
2019-01-14B1900254-002ND
2019-01-14B1900254-001ND
2019-01-14B1900254-002ND
2019-08-12B1903460-002ND
2019-08-12B1903460-004ND
2019-08-12B1903460-003ND
2019-08-12B1903460-002ND
2019-08-12B1903460-001ND
2019-08-12B1903460-005ND
2019-08-12B1903460-004ND
2019-08-12B1903460-003ND
2019-08-12B1903460-001ND
2019-08-12B1903460-005ND
2020-07-20B2003551-001ND
2020-07-20B2003551-003ND
2020-07-20B2003551-002ND
2021-02-08B2100522-005ND
2021-02-08B2100522-004ND
2021-02-08B2100522-003ND
2021-02-08B2100522-002ND
2021-02-08B2100522-001ND
2021-06-21B2102780-004ND
2021-06-21B2102780-005ND
2021-06-21B2102780-003ND
2021-06-21B2102780-002ND
2021-06-21B2102780-001ND
2022-05-23B2202455-001ND
2022-05-23B2202455-002ND
2022-05-23B2202455-003ND
2022-05-23B2202455-004ND
2022-05-23B2202455-005ND
2022-05-23B2202455-006ND
2023-05-22B2302104-001ND
2023-05-22B2302104-002ND
2023-05-22B2302104-003ND