Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Redmond Water Department

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

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND80ND
2022N/A00N/A
2023ND80ND

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
2021-05-112132295-VND
2021-05-112132299-VND
2021-05-112132264-VND
2021-05-182133712-VND
2021-05-182133715-VND
2021-05-182133726-VND
2021-06-022137357-VND
2021-06-022137359-VND
2023-07-1323-40882-VND
2023-07-1323-40886-VND
2023-07-1323-40883-VND
2023-07-1323-40863-VND
2023-07-1323-40885-VND
2023-07-1323-40887-VND
2023-07-1323-40884-VND
2023-07-1723-41527-VND