Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Quincy Water Department City Of

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
2018N/A00N/A
2019ND10ND
2020N/A00N/A
2021ND20ND
2022ND70ND
2023ND30ND

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
2019-10-02ND
2021-06-164132530ND
2021-06-164131878ND
2022-03-044258466ND
2022-03-224258506ND
2022-08-164338185ND
2022-08-164338187ND
2022-09-134344891ND
2022-10-064356345ND
2022-10-064356344ND
2023-03-094427806ND
2023-09-264526082ND
2023-10-034526155ND