Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Rio Brazos Water Supply Corporation

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

 

14

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
2023ND40ND

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
2018-09-24Q1838018007ND
2018-09-24Q1838018008ND
2019-09-23Q1967408003ND
2019-09-23Q1967408008ND
2020-08-03Q2030183001ND
2020-08-03Q2030183003ND
2021-03-31Q2108168006ND
2021-03-31Q2108168008ND
2022-11-30Q2235879002ND
2022-11-30Q2235879004ND
2023-06-08Q2321728001ND
2023-06-08Q2321728011ND
2023-08-17Q2334702001ND
2023-12-15Q2354044001ND