Know Your Environment. Protect Your Health.

Simazine

Polk City Water Supply

NOTE: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for simazine. Sample information shown below was taken by Des Moines Water Works.

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
2018ND10ND
2019ND30ND
2020ND10ND
2021ND20ND
2022ND30ND
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 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: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for simazine. Sample information shown below was taken by Des Moines Water Works.

Date Lab ID Result
2018-07-09OE680202ND
2018-07-16OE683859ND
2018-10-08OE724008ND
2019-07-09OE831885ND
2019-07-16OE835743ND
2019-08-21OE854920ND
2020-10-12OE1332018ND
2021-07-06OE1748365ND
2021-07-06OE1748381ND
2022-07-05OE2128016ND
2022-07-05OE2128018ND
2022-09-19OE2175664ND
2023-10-16OE2350834ND