Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Marble Community Water System

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

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND10ND
2021ND40ND
2022ND30ND
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
2018-03-1992377444001VOCND
2020-03-1692469616001_12710ND
2021-03-2992530231001A_12710ND
2021-06-1592544634001_12710ND
2021-08-1192555441001_12710ND
2021-10-1992567887001_12710ND
2022-02-0992587505001_12710ND
2022-05-1192604135001_12710ND
2022-09-122093908-01ND
2023-07-1037729_23-36797ND
2023-07-1037729_23-36799ND