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EWG's Tap Water Database — 2019 UPDATE

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1,2,4-Trichlorobenzene

San Gabriel County WD

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

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013ND60ND
2014ND70ND
2015ND50ND
2016ND50ND
2017ND50ND

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
2012-02-073761-001-1005ND
2012-04-189588-007-1100ND
2012-05-013761-001-1135ND
2012-07-033761-001-1040ND
2012-07-179588-009-0915ND
2012-07-179588-010-0930ND
2012-07-179588-011-1015ND
2012-08-073761-001-0000ND
2012-11-073761-001-1120ND
2013-04-109588-007-0915ND
2013-05-243761-020-1125ND
2013-07-159588-009-0950ND
2013-07-159588-010-1005ND
2013-08-139588-011-0945ND
2013-08-139588-001-1015ND
2014-04-089588-007-0940ND
2014-06-173761-020-1020ND
2014-07-149588-009-0900ND
2014-07-149588-010-0915ND
2014-07-149588-011-0945ND
2014-07-159588-001-1000ND
2014-12-059588-020-0910ND
2015-03-179588-020-1050ND
2015-06-119588-007-0905ND
2015-07-169588-010-1000ND
2015-07-169588-001-0940ND
2015-07-169588-011-1020ND
2016-04-139588-007-0940ND
2016-07-189588-011-0950ND
2016-07-189588-009-0925ND
2016-07-189588-010-0935ND
2016-09-159588-020-0910ND
2017-04-139588-007-0925ND
2017-07-179588-009-0905ND
2017-07-179588-011-0945ND
2017-07-179588-010-0925ND
2017-07-179588-020-1025ND