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EWG's Tap Water Database — 2021 UPDATE

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1,2,4-Trichlorobenzene

Waipahu-Ewa-Waianae

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

MORE ABOUT THIS CONTAMINANT

 

102

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND270ND
2015ND130ND
2016ND90ND
2017ND370ND
2018ND80ND
2019ND80ND

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
2014-01-13201401150663ND
2014-01-15201401170377ND
2014-01-15201401170388ND
2014-01-18201401220225ND
2014-01-18201401220226ND
2014-01-18201401220227ND
2014-01-18201401220228ND
2014-01-21201401230462ND
2014-01-21201401230463ND
2014-01-21201401230464ND
2014-01-21201401230465ND
2014-01-24201401280404ND
2014-01-24201401280405ND
2014-01-24201401280453ND
2014-01-25201401280407ND
2014-01-26201401280406ND
2014-01-26201401280432ND
2014-01-29201401310166ND
2014-01-30201402010005ND
2014-02-18201402200355ND
2014-03-05201403070205ND
2014-04-01201404030471ND
2014-04-04201404080622ND
2014-07-08201407100610ND
2014-07-23201407250222ND
2014-07-23201407250456ND
2014-10-06201410090200ND
2015-01-15201501160297ND
2015-01-15201501160298ND
2015-01-22201501230404ND
2015-01-26201501270096ND
2015-03-31201504020267ND
2015-04-13201504150586ND
2015-05-11201505130557ND
2015-07-20201507220426ND
2015-08-31201509020193ND
2015-08-31201509020194ND
2015-09-29201510010224ND
2015-10-20201510230301ND
2015-12-28201512180364ND
2016-01-14ND
2016-01-21ND
2016-01-25ND
2016-01-26ND
2016-04-12ND
2016-07-06ND
2016-10-12ND
2016-11-14ND
2016-12-14ND
2017-01-09ND
2017-01-10ND
2017-01-10ND
2017-01-10ND
2017-01-11ND
2017-01-24ND
2017-01-24ND
2017-01-25ND
2017-01-26ND
2017-02-02ND
2017-02-13ND
2017-02-13ND
2017-02-16ND
2017-02-22ND
2017-02-22ND
2017-02-23ND
2017-02-27ND
2017-03-13ND
2017-04-03ND
2017-04-25ND
2017-06-26ND
2017-07-20ND
2017-10-09ND
2017-10-11ND
2017-10-13ND
2017-10-16ND
2017-10-16ND
2017-10-16ND
2017-10-17ND
2017-10-18ND
2017-10-18ND
2017-10-23ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2017-10-25ND
2017-10-25ND
2018-01-18201801190620ND
2018-01-22201801230704ND
2018-01-24201712280233ND
2018-01-25201712280229ND
2018-04-16201804170923ND
2018-08-13201808140273ND
2018-08-21201808130257ND
2018-10-17201810180494ND
2019-01-24201901250061ND
2019-01-24201901250057ND
2019-01-28201901290128ND
2019-01-28201901290129ND
2019-04-04201904050237ND
2019-07-09201907100450ND
2019-07-30201908010178ND
2019-10-10201909170640ND