Know Your Environment. Protect Your Health.

Simazine

Hynes Estates Mutual Water Company

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND40ND
2021ND20ND
2022N/A00N/A
2023ND60ND

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
2018-04-16CA3000519_001_001-201804161115ND
2018-07-03CA3000519_001_001-201807030935ND
2019-07-10CA3000519_005_005-201907101130ND
2019-11-07CA3000519_005_005-201911071310ND
2020-02-04CA3000519_005_005-202002041035ND
2020-05-05CA3000519_005_005-202005051010ND
2020-08-25CA3000519_001_001-202008250920ND
2020-11-17CA3000519_001_001-202011170900ND
2021-04-08CA3000519_005_005-202104081045ND
2021-08-03CA3000519_005_005-202108031005ND
2023-02-01CA3000519_001_001-202302011115ND
2023-04-24CA3000519_001_001-202304240955ND
2023-04-24CA3000519_005_005-202304241030ND
2023-09-14CA3000519_005_005-202309141330ND
2023-09-14CA3000519_005_005-202309141345ND
2023-11-08CA3000519_005_005-202311080935ND