Know Your Environment. Protect Your Health.

Simazine

Pixley Public Utility District

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND20ND
2021ND30ND
2022ND20ND
2023ND30ND

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
2018-05-03CA5410009_011_011-201805030915ND
2018-08-21CA5410009_011_011-201808211130ND
2018-10-09CA5410009_011_011-201810091045ND
2019-01-15CA5410009_011_011-201901151120ND
2019-04-16CA5410009_011_011-201904161100ND
2020-01-23CA5410009_011_011-202001231055ND
2020-07-23CA5410009_004_004-202007231045ND
2021-07-22CA5410009_006_006-202107221142ND
2021-10-11CA5410009_006_006-202110111132ND
2021-10-22CA5410009_011_011-202110221054ND
2022-08-08CA5410009_013_013-202208081140ND
2022-11-04CA5410009_013_013-202211041100ND
2023-01-13CA5410009_013_013-202301131048ND
2023-05-01CA5410009_013_013-202305011054ND
2023-08-28CA5410009_004_004-202308281203ND