1,2,4-Trichlorobenzene

Niles

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	2	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	ND	14	ND
2019	ND	10	ND

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
2014-08-05	LLF31177	ND
2014-08-05	LLF31179	ND
2018-03-05	LLH68935	ND
2018-03-05	LLH68936	ND
2018-06-25	LLH88919	ND
2018-06-25	LLH88920	ND
2018-06-25	LLH88921	ND
2018-08-06	LLH97147	ND
2018-08-06	LLH97146	ND
2018-08-06	LLH97145	ND
2018-09-13	LLI05494	ND
2018-09-17	LLI06128	ND
2018-09-17	LLI06127	ND
2018-09-17	LLI06126	ND
2018-11-27	LLI16872	ND
2018-11-27	LLI16871	ND
2019-02-11	LLI25176	ND
2019-02-11	LLI25175	ND
2019-02-11	LLI25174	ND
2019-06-19	LLI44899	ND
2019-06-19	LLI44898	ND
2019-09-17	LLI64908	ND
2019-09-17	LLI64907	ND
2019-09-17	LLI64906	ND
2019-12-10	LLI82613	ND
2019-12-10	LLI82612	ND