Know Your Environment. Protect Your Health.

Atrazine

City of Broussard Water System

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

Atrazine is a herbicide commonly detected in drinking water that comes from cornfield and other agricultural runoff. It is a hormone disrupter that harms the male and female reproductive systems of people and wildlife. Read More.

Federal laws allow up to 3 parts per billion of atrazine in treated tap water. Water suppliers average atrazine measurements collected over a year, which means that the reported values underestimate intense spikes of elevated exposures during the periods in late spring and early summer when atrazine is applied in large amounts on farm fields.

Human epidemiological studies suggest that federal standards for atrazine are insufficient to protect public health. In 1999 the California Office of Environmental Health Hazard Assessment set a public health goal of 0.15 parts per billion for atrazine in drinking water, based on a study finding increased rates of breast cancer in rats exposed to the chemical. California’s legal maximum for atrazine in tap water is 1 ppb.

Click here to read more about atrazine.

 

64

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: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for atrazine was defined by EWG based on epidemiological studies of human exposure to atrazine in drinking water.. This health guideline protects against harm to the developing fetus, harm to the reproductive system and hormone disruption.

EPA Maximum Contaminant
Level (MCL): 3 ppb

The legal limit for atrazine, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit does not fully protect against harm to the reproductive system, harm to the developing fetus, and hormone disruption.

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 atrazine. 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
2019-01-1435442609001ND
2019-01-1435442609002ND
2019-01-1435442609001ND
2019-01-1435442609002ND
2019-08-1235490056002ND
2019-08-1235490056004ND
2019-08-1235490056003ND
2019-08-1235490056002ND
2019-08-1235490056001ND
2019-08-1235490056005ND
2019-08-1235490056004ND
2019-08-1235490056003ND
2019-08-1235490056001ND
2019-08-1235490056005ND
2020-07-2035564847003ND
2020-07-2035564847002ND
2020-07-2035564847001ND
2020-09-0835576522002ND
2020-09-0835576522001ND
2020-11-2435594841003ND
2020-11-2435594841002ND
2021-02-0835610875003ND
2021-02-0835610875002ND
2021-02-0835610872005ND
2021-02-0835610872004ND
2021-02-0835610872003ND
2021-02-0835610872001ND
2021-02-0835610872002ND
2021-06-1435641565001ND
2021-06-2135642603003ND
2021-06-2135642603005ND
2021-06-2135642603004ND
2021-06-2135642603002ND
2021-06-2135642603001ND
2021-06-2135642592001ND
2022-05-2335720206001ND
2022-05-2335720206002ND
2022-05-2335720206003ND
2022-05-2335720206004ND
2022-05-2335720206005ND
2022-05-2335720206006ND
2023-05-2235801891004ND
2023-05-2235801891005ND
2023-05-2235801891006ND