Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

1,2,4-Trichlorobenzene

City of Post Falls

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

 

16

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
2013ND50ND
2014ND90ND
2015ND10ND
2016ND10ND
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
2013-06-19V141156ND
2013-06-19V141157ND
2013-06-19V141158ND
2013-06-19V141159ND
2013-10-30V145900ND
2014-01-27V012714105ND
2014-01-27V012714104ND
2014-03-21V149079ND
2014-06-02V060214129ND
2014-06-02V060214104ND
2014-06-02V060214103ND
2014-06-02V060214105ND
2014-06-24V151797ND
2014-09-04V154278ND
2015-09-14V164591ND
2016-12-14V178367ND