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EWG's Tap Water Database — 2019 UPDATE

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1,2,4-Trichlorobenzene

Symonds Water Association

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND

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
2012-01-17120118-005VOND
2012-04-09120410-031VOND
2012-08-15120816-009VOND
2012-10-08121009-011VOND
2013-01-23130124-011VOND
2013-04-08130409-011VOND
2013-07-09130710-010VOND
2013-10-15131017-002VOND
2014-06-02140603-012VOND
2015-06-18150619-002VOND
2016-12-19161220-047VOND
2017-06-21170622-012VOND