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EWG's Tap Water Database — 2019 UPDATE

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1,2,4-Trichlorobenzene

Chowan County Water System

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

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND20ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND

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
2012-01-188045-011812-E01VND
2012-04-118045-041112-E01VND
2012-07-118045-071112-E01VND
2012-10-178045-101712-E01VND
2013-01-098045-010913-E01VND
2013-04-038045-040313-E01VND
2014-10-228045-102214-E01VND
2015-10-14ND
2016-10-058045-100516-E01VND
2017-10-188045-101817-E01VND