Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Marston PWS

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

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-06AD17523ND
2018-05-02AD18671ND
2018-07-11AD29590ND
2018-10-11AD35068ND
2019-01-08AD38381ND
2019-04-10AD46672ND
2019-07-11AD52717ND
2019-10-17AD57379ND
2020-01-12AD60698ND
2020-01-12AD60699ND
2020-04-142004303ND
2020-04-142004302ND
2020-07-152012319ND
2020-07-152011774ND
2020-10-182016645ND
2020-10-182016644ND
2021-01-102020244ND
2021-01-102020243ND
2021-04-122103857ND
2021-04-122103856ND
2021-07-112113866ND
2021-07-112113867ND
2021-10-182118176ND
2021-10-182118175ND
2022-01-122121677ND
2022-01-122121678ND
2022-04-132204415ND
2022-04-132204414ND
2022-07-182214868ND
2022-07-182214867ND
2022-10-102219709ND
2022-10-102219710ND
2023-01-082223379ND
2023-01-082223378ND
2023-04-122303545ND
2023-04-122303544ND
2023-07-192311776ND
2023-07-192311777ND
2023-10-182316888ND
2023-10-182316887ND