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EWG's Tap Water Database — 2021 UPDATE

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1,2,4-Trichlorobenzene

Brookstone S/d

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

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND10ND
2017ND20ND
2018ND20ND
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-01-14C316093-01ND
2014-07-29C408802-01ND
2014-10-07C412012-01RE1ND
2015-01-08ND
2015-04-09ND
2015-07-20ND
2016-07-21CZ08339-01ND
2017-01-26CZ18733-01ND
2017-07-06CA07710-01ND
2018-07-11CB08125-01 ND
2018-07-19CB08123-01 ND