Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Norphlet Waterworks

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
2018ND40ND
2019ND30ND
2020ND10ND
2021ND10ND
2022ND20ND
2023ND10ND

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
2018-02-2618060002201ND
2018-04-3018123005501ND
2018-07-1018193006501ND
2018-10-2918305001801ND
2019-02-1919052004401ND
2019-02-1919052004301ND
2019-07-1519198002501ND
2020-07-2020204000301ND
2021-08-1021224007101ND
2022-01-2422027007101ND
2022-08-16O200995-VOC-1ND
2023-08-15O211592-VOC-1ND