Know Your Environment. Protect Your Health.

Simazine

Triple R 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.

 

47

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND100ND
2020ND40ND
2021ND250ND
2022ND80ND
2023N/A00N/A

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
2019-12-11CA5400670_009_009-201912111115ND
2019-12-11CA5400670_005_005-201912111140ND
2019-12-11CA5400670_002_002-201912111155ND
2019-12-11CA5400670_001_001-201912111030ND
2019-12-11CA5400670_011_011-201912111210ND
2019-12-11CA5400670_006_006-201912111100ND
2019-12-11CA5400670_004_004-201912110955ND
2019-12-11CA5400670_010_010-201912111225ND
2019-12-11CA5400670_007_007-201912111240ND
2019-12-11CA5400670_008_008-201912111255ND
2020-03-22CA5400670_011_011-202003221250ND
2020-06-29CA5400670_011_011-202006291640ND
2020-09-28CA5400670_011_011-202009281620ND
2020-12-20CA5400670_011_011-202012201140ND
2021-03-31CA5400670_011_011-202103311200ND
2021-06-24CA5400670_008_008-202106241010ND
2021-06-24CA5400670_002_002-202106241030ND
2021-06-24CA5400670_005_005-202106240850ND
2021-06-24CA5400670_004_004-202106240800ND
2021-06-24CA5400670_006_006-202106240835ND
2021-06-24CA5400670_001_001-202106240820ND
2021-06-24CA5400670_007_007-202106240950ND
2021-06-24CA5400670_009_009-202106240920ND
2021-09-27CA5400670_005_005-202109271645ND
2021-09-27CA5400670_009_009-202109271700ND
2021-09-27CA5400670_004_004-202109271630ND
2021-09-27CA5400670_007_007-202109271800ND
2021-09-27CA5400670_006_006-202109271740ND
2021-09-27CA5400670_008_008-202109271830ND
2021-09-27CA5400670_002_002-202109271615ND
2021-09-27CA5400670_001_001-202109271600ND
2021-12-21CA5400670_001_001-202112211400ND
2021-12-21CA5400670_004_004-202112211410ND
2021-12-21CA5400670_002_002-202112211315ND
2021-12-21CA5400670_006_006-202112211340ND
2021-12-21CA5400670_009_009-202112211325ND
2021-12-21CA5400670_008_008-202112211257ND
2021-12-21CA5400670_007_007-202112211240ND
2021-12-21CA5400670_005_005-202112211335ND
2022-03-27CA5400670_001_001-202203271400ND
2022-03-27CA5400670_002_002-202203271630ND
2022-03-27CA5400670_007_007-202203271700ND
2022-03-27CA5400670_006_006-202203271420ND
2022-03-27CA5400670_005_005-202203271645ND
2022-03-27CA5400670_008_008-202203271720ND
2022-03-27CA5400670_009_009-202203271435ND
2022-03-27CA5400670_004_004-202203271800ND