Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

St Charles Water District 1 East Bank

1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 5 ppb

The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.

EPA Maximum Contaminant
Level (MCL): 70 ppb

The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-2335370117001ND
2018-01-2335370117001ND
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-09-0535495382002ND
2019-09-0535495382001ND
2019-09-0535495382002ND
2019-09-0535495382001ND
2020-03-0535535509001ND
2020-03-0535535509002ND
2021-01-2835608065001ND
2021-01-2835608065002ND
2021-03-1035618304001ND
2021-03-1035618304002ND
2022-02-0235694868001ND
2022-02-0235694870001ND
2023-03-2035787602001ND
2023-03-2035787604001ND