1,2,4-Trichlorobenzene
Vaughn WC Inc
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 | ND | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-07-31 | 5867-050-1400 | ND |
| 2014-08-27 | 5867-046-1040 | ND |
| 2016-06-29 | 5867-026-1120 | ND |
| 2016-06-29 | 5867-035-1200 | ND |
| 2016-07-27 | 5867-020-1130 | ND |
| 2016-07-27 | 5867-027-1230 | ND |
| 2016-08-31 | 5867-018-1100 | ND |
| 2016-09-29 | 5867-048-1325 | ND |
| 2017-06-22 | 5867-046-1035 | ND |
| 2017-06-22 | 5867-050-1000 | ND |
| 2019-03-19 | 5867-020-1150 | ND |
| 2019-03-19 | 5867-048-1010 | ND |
| 2019-04-25 | 5867-018-1255 | ND |
| 2019-04-25 | 5867-026-1350 | ND |
| 2019-05-28 | 5867-035-1140 | ND |
| 2019-06-18 | 5867-027-1450 | ND |