Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Ayer DPW Water Division

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

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND100ND
2020ND80ND
2021ND90ND
2022ND20ND
2023ND70ND

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 Result
2018-06-13ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2019-03-05ND
2019-03-05ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-12-10ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-10-19ND
2021-12-02ND
2022-01-19ND
2022-04-25ND
2023-05-02ND
2023-07-27ND
2023-08-07ND
2023-08-07ND
2023-08-07ND
2023-08-07ND
2023-08-07ND