Know Your Environment. Protect Your Health.

Simazine

Rosemount

Simazine is a hormone-disrupting herbicide related to atrazine. It affects the male and female reproductive systems. In studies of laboratory animals, simazine increases blood levels of estrogen, decreases prolactin and progesterone, and causes mammary and ovarian tumors.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND80ND
2020ND70ND
2021ND20ND
2022ND100ND
2023N/A00N/A

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 simazine 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): 4 ppb

The legal limit for simazine, established in 1992, was based on toxicity studies 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

Date Lab ID Result
2018-10-2418J1245-03ND
2018-10-2418J1247-02ND
2018-10-2418J1247-03ND
2018-10-2418J1247-04ND
2018-10-2418J1245-02ND
2019-02-1519B0720-01ND
2019-02-1519B0720-02ND
2019-02-1519B0720-03ND
2019-02-1519B0720-04ND
2019-02-1519B0722-01ND
2019-04-2919D2437-01ND
2019-09-1219I0608-01ND
2019-11-2519K1669-01ND
2020-01-0720A0140-05ND
2020-01-0720A0140-04ND
2020-01-0720A0140-01ND
2020-01-0720A0140-02ND
2020-05-1920E1080-02ND
2020-05-1920E1080-03ND
2020-05-1920E1080-04ND
2021-05-0321E0039-03ND
2021-08-1121H0961-01ND
2022-08-1622H1498-02ND
2022-08-1622H1499-04ND
2022-08-1622H1499-03ND
2022-08-1622H1499-02ND
2022-08-1622H1498-01ND
2022-10-1122J0400-01ND
2022-10-1122J0400-02ND
2022-10-1122J0400-03ND
2022-10-1122J0400-04ND
2022-12-2022L0972-01ND