Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

City of Overton

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

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-03-13Q1810105002ND
2018-03-13Q1810105003ND
2018-06-11Q1823066006ND
2019-04-15Q1914977001ND
2019-04-15Q1914977004ND
2020-05-14Q2019538003ND
2020-05-14Q2019538005ND
2021-05-03Q2111069004ND
2021-10-21Q2129818002ND
2022-06-27Q2217839002ND
2022-06-27Q2217839004ND
2023-05-25Q2319666002ND
2023-05-25Q2319666004ND