Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

B C Y Water Supply Corporation

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND40ND
2023ND60ND

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
2018-06-21Q1824846011ND
2018-06-21Q1824846013ND
2018-06-21Q1824846016ND
2018-06-21Q1824846005ND
2019-03-13Q1910550001ND
2019-03-13Q1910550005ND
2019-03-13Q1910550010ND
2019-03-13Q1910550014ND
2020-02-10Q2005314011ND
2020-02-10Q2005314013ND
2020-02-10Q2005314015ND
2020-03-02Q2007756011ND
2021-09-21Q2125818005ND
2021-09-21Q2125818011ND
2021-09-21Q2125818007ND
2021-09-21Q2125818003ND
2022-10-27Q2232551010ND
2022-10-27Q2232551012ND
2022-10-27Q2232551014ND
2022-10-27Q2232551016ND
2023-01-10Q2301214003ND
2023-01-10Q2301214005ND
2023-05-01Q2316259005ND
2023-05-01Q2316259007ND
2023-05-01Q2316259009ND
2023-11-13Q2348410003ND