Know Your Environment. Protect Your Health.

Simazine

City Of Glen Rose

NOTE: City Of Glen Rose purchases water from Somervell County Water District - Wheele which is required to test for simazine. Sample information shown below was taken by Somervell County Water District - Wheele.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND20ND
2020ND40ND
2021ND70ND
2022ND80ND
2023ND80ND

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

NOTE: City Of Glen Rose purchases water from Somervell County Water District - Wheele which is required to test for simazine. Sample information shown below was taken by Somervell County Water District - Wheele.

Date Lab ID Result
2018-04-26Q1817130001ND
2019-02-13Q1906633003ND
2020-11-03Q2042995005ND
2021-06-01Q2114024001ND
2022-02-22Q2206240001ND
2023-10-11Q2343452003ND