1,2,4-Trichlorobenzene
Hermanville Water Association
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 | 9 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 12 | 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 |
|---|---|---|
| 2014-01-21 | 140122-013VO | ND |
| 2014-01-21 | 140122-012VO | ND |
| 2014-01-21 | 140122-011VO | ND |
| 2014-04-14 | 140415-016VO | ND |
| 2014-04-14 | 140415-015VO | ND |
| 2014-04-14 | 140415-014VO | ND |
| 2014-07-21 | 140722-003VO | ND |
| 2014-07-21 | 140722-002VO | ND |
| 2014-07-21 | 140722-004VO | ND |
| 2015-06-23 | 150624-006VO | ND |
| 2015-06-23 | 150624-005VO | ND |
| 2015-06-23 | 150624-004VO | ND |
| 2016-12-20 | 161221-021VO | ND |
| 2016-12-20 | 161221-020VO | ND |
| 2016-12-20 | 161221-019VO | ND |
| 2017-06-26 | 170627-012VO | ND |
| 2017-06-26 | 170627-013VO | ND |
| 2017-06-26 | 170627-011VO | ND |
| 2018-05-02 | 180503-009VO | ND |
| 2018-05-02 | 180503-008VO | ND |
| 2018-05-02 | 180503-007VO | ND |
| 2018-08-15 | 180816-006VO | ND |
| 2018-08-15 | 180816-005VO | ND |
| 2018-08-15 | 180816-004VO | ND |
| 2018-09-20 | 180921-005VO | ND |
| 2018-09-20 | 180921-004VO | ND |
| 2018-09-20 | 180921-003VO | ND |
| 2018-10-23 | 181024-009VO | ND |
| 2018-10-23 | 181024-008VO | ND |
| 2018-10-23 | 181024-007VO | ND |
| 2019-04-29 | 190430-006VO | ND |
| 2019-04-29 | 190430-008VO | ND |
| 2019-04-29 | 190430-007VO | ND |