Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

West Harris County Municipal Utility District 15

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
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
2018-03-05AE16632ND
2018-03-05AE16636ND
2019-01-28AE51688ND
2019-04-23AE63390ND
2020-01-13AE93133ND
2020-11-05AF33470ND
2021-03-09AF46042ND
2021-04-27AF51428ND
2022-03-01AF86930ND
2022-03-01AF86950ND
2023-02-22AG29960ND
2023-02-22AG29962ND