Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Guilford Water Authority

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND30ND
2021ND50ND
2022ND10ND
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 Lab ID Result
2018-05-29(104)ND
2018-09-04(104)ND
2018-12-11(104)ND
2019-03-05(104)ND
2020-11-0223491219.00ND
2020-11-0223491198.00ND
2020-11-0223491177.00ND
2021-03-0924197190.00ND
2021-03-0924197211.00ND
2021-03-2924197233.00ND
2021-03-2924197254.00ND
2021-11-0425719747.00ND
2022-04-2526601188.00ND
2023-05-1729053138.00ND
2023-05-1729053159.00ND
2023-05-2429053209.00ND
2023-05-2429053188.00ND
2023-08-0129447925.00ND
2023-08-0129447945.00ND
2023-08-0129447905.00ND