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EWG's Tap Water Database — 2019 UPDATE

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1,2,4-Trichlorobenzene

City of Caldwell

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

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND30ND
2014ND30ND
2015ND30ND
2016ND130ND
2017N/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
2013-06-06V1324249ND
2013-06-11V1324841ND
2013-06-11V1324842ND
2014-06-18V1422594ND
2014-09-29V1438512ND
2014-11-13V1445335ND
2015-03-10V1509143ND
2015-05-06V1517379ND
2015-09-24V1541055ND
2016-10-12V1647132ND
2016-10-12V1647133ND
2016-10-12V1647134ND
2016-10-12V1647135ND
2016-10-12V1647131ND
2016-10-13V1647139ND
2016-10-13V1647138ND
2016-10-13V1647137ND
2016-10-13V1647136ND
2016-10-13V1647140ND
2016-10-13V1647142ND
2016-10-13V1647141ND
2016-10-19V1647952ND