1,2,4-Trichlorobenzene
Woodbury Cons. WD
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2015-03-10 | 03111502-1(POCS) | ND |
| 2015-05-27 | 05271537-26(POCS | ND |
| 2016-12-07 | 12071686-3P(POCS | ND |
| 2016-12-07 | 12071686-2P(POCS | ND |
| 2016-12-07 | 12071686-4P(POCS | ND |
| 2017-07-19 | 07191735-10(POCS | ND |
| 2017-09-26 | 09271750-5(POCS) | ND |
| 2017-11-16 | 11171701-7(POCS) | ND |
| 2017-11-16 | 11171701-6(POCS) | ND |
| 2017-12-20 | 12211701-1(POCS) | ND |
| 2018-09-19 | 09191865-8POCS | ND |
| 2018-09-19 | 09191865-15POCS | ND |
| 2018-09-19 | 09191865-9POCS | ND |
| 2019-09-13 | 09131905-5POC-NA | ND |
| 2019-09-13 | 09131905-4POC-NA | ND |
| 2019-09-13 | 09131905-6POC-NA | ND |