Know Your Environment. Protect Your Health.

Simazine

City of Richwood

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND20ND
20210.0700 ppb110.0700 ppb
2022ND30ND
20230.0700 ppb110.0700 ppb

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
2018-02-07AE13116ND
2018-04-05AE21513ND
2019-02-12AE54186ND
2019-02-12AE54187ND
2019-04-01AE60755ND
2019-07-08AE73542ND
2020-03-17AF03389ND
2020-10-15AF30959ND
2021-04-08AF496030.0700 ppb
2022-03-28AF90859ND
2022-03-28AF90860ND
2022-03-28AF90861ND
2023-01-19AG254310.0700 ppb