Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

City of Beaverton

NOTE: City of Beaverton purchases water from Joint Water Commission which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by Joint Water Commission.

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

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

NOTE: City of Beaverton purchases water from Joint Water Commission which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by Joint Water Commission.

Date Lab ID Result
2018-02-071809141-VND
2018-11-051884309-VND
2019-04-241928990-VND
2019-11-041981259-VND
2020-04-012021410-VND
2020-11-042074464-VND
2021-04-072123196-VND
2021-11-032180746-VND
2022-03-312221620-VND
2022-11-0222-71086-VND
2023-04-1023-19659-VND
2023-11-0623-67462-VND