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EWG's Tap Water Database — 2021 UPDATE

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1,2,4-Trichlorobenzene

Borough of Atglen

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
2014ND50ND
2015ND10ND
2016ND10ND
2017ND30ND
2018ND10ND
2019ND10ND

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
2014-03-191077387001ND
2014-06-232014203001ND
2014-07-292021224001ND
2014-09-152029178001ND
2014-12-082044696001ND
2015-06-2212876751ND
2016-11-2215221161ND
2017-04-1115930752ND
2017-05-0216088380ND
2017-12-1917156502ND
2018-05-018041270-01ND
2019-04-099041375-01ND