1,2,4-Trichlorobenzene
Holly Tree Acres System 1
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 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 8 | 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 |
|---|---|---|
| 2015-01-16 | V5A0375-02 | ND |
| 2015-01-16 | V5A0375-03 | ND |
| 2018-01-11 | 7040260001-VOC | ND |
| 2018-01-11 | 7040267001-VOC | ND |
| 2018-02-26 | 2298242001 | ND |
| 2018-04-23 | 7049760001-VOC | ND |
| 2018-09-26 | 7066191001-VOC | ND |
| 2018-10-01 | 7067159001-VOC | ND |
| 2019-01-16 | 7077040001-VOC | ND |
| 2019-01-30 | 7078177001-VOC | ND |
| 2019-04-24 | 7087324001-VOC | ND |
| 2019-06-25 | 7095254001-VOC | ND |
| 2019-06-25 | 7095256001-VOC | ND |
| 2019-08-21 | 70102407001-VOC | ND |
| 2019-08-21 | 70102414001-VOC | ND |
| 2019-10-22 | 70109566001-VOC | ND |