1,2,4-Trichlorobenzene
City of Delano
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 | 11 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 8 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-01-14 | 5810-042-0825 | ND |
| 2014-04-29 | 5810-042-0745 | ND |
| 2014-07-01 | 5810-013-0800 | ND |
| 2014-07-01 | 5810-017-0830 | ND |
| 2014-07-01 | 5810-033-0730 | ND |
| 2014-07-08 | 5810-042-0949 | ND |
| 2014-07-08 | 5810-039-0950 | ND |
| 2014-07-08 | 5810-037-0830 | ND |
| 2014-07-08 | 5810-036-1025 | ND |
| 2014-07-08 | 5810-035-0900 | ND |
| 2014-09-02 | 5810-038-0911 | ND |
| 2015-03-17 | 5810-047-1030 | ND |
| 2015-07-21 | 5810-047-0810 | ND |
| 2015-09-01 | 5810-047-0830 | ND |
| 2015-10-27 | 5810-047-1015 | ND |
| 2017-07-11 | 5810-033-0950 | ND |
| 2017-07-11 | 5810-042-0725 | ND |
| 2017-07-11 | 5810-039-0835 | ND |
| 2017-07-11 | 5810-037-0926 | ND |
| 2017-07-11 | 5810-035-0950 | ND |
| 2017-07-18 | 5810-036-0945 | ND |
| 2017-09-05 | 5810-017-1000 | ND |
| 2017-12-05 | 5810-047-1100 | ND |