Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Lake Delton Waterworks

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
2018N/A00N/A
2019ND30ND
2020ND70ND
2021ND10ND
2022N/A00N/A
2023ND50ND

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
2019-06-191129378ND
2019-07-221135927ND
2019-12-101164822ND
2020-04-20409868ND
2020-05-28424672ND
2020-05-28424675ND
2020-05-28424681ND
2020-06-02426799ND
2020-06-02426789ND
2020-06-02426786ND
2021-01-20526112ND
2023-03-201301274ND
2023-03-201301276ND
2023-04-191316618ND
2023-04-201316620ND
2023-04-201316622ND