1,2,4-Trichlorobenzene
Linda County Water District
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2016-06-22 | 3334-001-0803 | ND |
| 2016-06-22 | 3334-002-0810 | ND |
| 2016-06-22 | 3334-007-0930 | ND |
| 2016-06-22 | 3334-009-0920 | ND |
| 2016-06-22 | 3334-011-0900 | ND |
| 2017-08-09 | 3334-001-1030 | ND |
| 2017-08-09 | 3334-002-1044 | ND |
| 2017-08-09 | 3334-007-1155 | ND |
| 2017-08-09 | 3334-009-1145 | ND |
| 2017-08-09 | 3334-011-1110 | ND |
| 2017-08-09 | 3334-015-1110 | ND |
| 2019-09-25 | 3334-001-1025 | ND |
| 2019-09-25 | 3334-002-1025 | ND |