Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Prineville, City of

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
2018ND10ND
2019ND30ND
2020ND10ND
2021ND10ND
2022ND60ND
2023N/A00N/A

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
2018-11-061884729-VND
2019-05-201935386-VND
2019-05-201935392-VND
2019-05-201935387-VND
2020-03-19X040779-VND
2021-02-08X044752-VND
2022-04-2622-27123-VND
2022-04-2622-27115-VND
2022-05-12X050385-VND
2022-05-2422-33327-VND
2022-05-2422-33318-VND
2022-05-2422-33319-VND