Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Lacey Water Department

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

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020N/A00N/A
2021ND50ND
2022ND90ND
2023ND10ND

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
2018-04-26ND
2019-06-20ND
2019-11-13ND
2021-09-134178879ND
2021-09-134178883ND
2021-09-134178876ND
2021-09-134178874ND
2021-09-144178973ND
2022-09-264367968ND
2022-09-274361750ND
2022-10-254374626ND
2022-10-254374622ND
2022-10-264374712ND
2022-10-274374639ND
2022-11-284384852ND
2022-11-284384848ND
2022-12-294401375ND
2023-01-264481718ND