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EWG's Tap Water Database — 2021 UPDATE

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1,2,4-Trichlorobenzene

Colchester Commons

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND30ND
2016ND20ND
2017ND20ND
2018ND30ND
2019ND20ND

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
2014-02-19BG10471VOC1ND
2014-02-19BG10470VOC1ND
2014-04-18BG34476VOC1ND
2014-04-18BG34477VOC1ND
2014-07-29BG83659VOC1ND
2014-07-29BG83661VOC1ND
2014-10-16BH28215VOC1ND
2014-10-16BH28216VOC1ND
2015-04-24BJ07685VOC1ND
2015-04-24BJ07684VOC1ND
2015-04-24BJ07683VOC1ND
2016-03-24BK87904VOC1ND
2016-03-24BK87906VOC1ND
2017-04-07BY00694VOC1ND
2017-10-10BZ18334VOC1ND
2018-04-27CA37955VOC1ND
2018-04-27CA37956VOC1ND
2018-04-27CA37957VOC1ND
2019-10-21CE44554ND
2019-10-21CE44556ND