Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Westwood Beach

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

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND70ND
2022ND40ND
2023ND30ND

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
2018-10-10Q1840455006ND
2018-10-10Q1840455012ND
2018-10-10Q1840455005ND
2019-06-13Q1935800008ND
2019-06-13Q1935800010ND
2019-06-13Q1935800012ND
2020-05-14Q2019532007ND
2020-05-14Q2019532009ND
2020-05-14Q2019532011ND
2021-05-13Q2112500012ND
2021-05-13Q2112500010ND
2021-05-13Q2112500001ND
2021-07-20Q2118896001ND
2021-07-20Q2118896003ND
2021-12-15Q2135518001ND
2021-12-15Q2135518003ND
2022-07-26Q2221164001ND
2022-07-26Q2221164003ND
2022-07-26Q2221164005ND
2022-12-05Q2236047001ND
2023-02-28Q2307933002ND
2023-10-02Q2342089004ND
2023-10-02Q2342089006ND