Know Your Environment. Protect Your Health.

Atrazine

North Cherokee Water Supply Corporation

NOTE: North Cherokee Water Supply Corporation purchases water from City of Jacksonville which is required to test for atrazine. Sample information shown below was taken by City of Jacksonville.

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND10ND
2020ND20ND
2021ND70ND
2022ND10ND
2023ND10ND

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: North Cherokee Water Supply Corporation purchases water from City of Jacksonville which is required to test for atrazine. Sample information shown below was taken by City of Jacksonville.

Date Lab ID Result
2018-09-13Q1836630001ND
2018-11-12Q1845099005ND
2018-11-12Q1845099009ND
2018-11-12Q1845099013ND
2018-11-12Q1845099017ND
2019-01-30Q1904613021ND
2019-07-02Q1941674005ND
2020-01-27Q2002874010ND
2020-01-27Q2002874019ND
2021-07-12Q2118022002ND
2021-07-12Q2118022006ND
2021-07-12Q2118022005ND
2021-07-12Q2118022004ND
2021-07-12Q2118022003ND
2021-07-12Q2118022001ND
2021-10-12Q2128275001ND
2022-01-10Q2200509001ND
2022-06-13Q2216379002ND
2022-08-25Q2225372003ND
2022-12-01Q2235911011ND
2023-01-30Q2304172004ND