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EWG's Tap Water Database — 2019 UPDATE

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1,2,4-Trichlorobenzene

City of San Diego

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

 

62

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013ND120ND
2014ND90ND
2015ND110ND
2016ND120ND
2017ND90ND

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
2012-02-019437-001-0000ND
2012-02-019437-006-0000ND
2012-02-019437-010-0000ND
2012-05-029437-001-0000ND
2012-05-029437-006-0000ND
2012-05-029437-010-0000ND
2012-08-019437-001-0000ND
2012-08-019437-006-0000ND
2012-08-019437-010-0000ND
2013-02-069437-010-0000ND
2013-02-069437-006-0000ND
2013-02-069437-001-0000ND
2013-05-019437-010-0000ND
2013-05-019437-001-0000ND
2013-05-019437-006-0000ND
2013-08-079437-006-0000ND
2013-08-079437-001-0000ND
2013-08-079437-010-0000ND
2013-11-069437-006-0000ND
2013-11-069437-001-0000ND
2013-11-069437-010-0000ND
2014-02-059437-006-0000ND
2014-02-059437-001-0000ND
2014-02-059437-010-0000ND
2014-05-079437-006-0000ND
2014-05-079437-001-0000ND
2014-05-079437-010-0000ND
2014-11-059437-006-0000ND
2014-11-059437-001-0000ND
2014-11-059437-010-0000ND
2015-02-049437-010-0000ND
2015-02-049437-001-0000ND
2015-05-069437-001-0000ND
2015-05-069437-010-0000ND
2015-05-069437-006-0000ND
2015-08-059437-001-0000ND
2015-08-059437-010-0000ND
2015-08-059437-006-0000ND
2015-11-189437-001-0000ND
2015-11-189437-010-0000ND
2015-11-189437-006-0000ND
2016-02-089437-001-0000ND
2016-02-089437-010-0000ND
2016-02-089437-006-0000ND
2016-05-049437-001-0000ND
2016-05-049437-010-0000ND
2016-05-049437-006-0000ND
2016-08-049437-006-0000ND
2016-08-049437-001-0000ND
2016-08-049437-010-0000ND
2016-11-029437-006-0000ND
2016-11-029437-001-0000ND
2016-11-029437-010-0000ND
2017-02-019437-006-0000ND
2017-02-019437-001-0000ND
2017-02-019437-010-0000ND
2017-05-039437-006-0000ND
2017-05-039437-001-0000ND
2017-05-039437-010-0000ND
2017-11-019437-010-0000ND
2017-11-019437-001-0000ND
2017-11-019437-006-0000ND