Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Conyngham Water Company

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

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND50ND
2021ND30ND
2022ND30ND
2023ND50ND

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
2018-04-177048808001ND
2018-04-177048808002ND
2018-04-177048808003ND
2019-03-121903-156-2ND
2019-03-1219030-156-1ND
2019-03-121903-156-1ND
2020-03-0221862224.00ND
2020-03-0221862204.00ND
2020-03-0221862184.00ND
2020-03-0221862164.00ND
2020-03-0221862144.00ND
2021-06-0124454884.00ND
2021-06-0124454864.00ND
2021-06-0124454904.00ND
2022-04-0426478811.00ND
2022-04-0426478831.00ND
2022-04-0426478851.00ND
2023-03-0628536369.00ND
2023-03-0628536389.00ND
2023-03-0628536409.00ND
2023-12-1230259319.00ND
2023-12-1230259299.00ND