1,2,4-Trichlorobenzene
Jonah Water SUD
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2015-03-10 | AC83525 | ND |
| 2015-03-10 | AC83523 | ND |
| 2015-03-10 | AC83529 | ND |
| 2015-03-10 | AC83527 | ND |
| 2015-06-18 | AC96512 | ND |
| 2015-06-18 | AC96514 | ND |
| 2016-02-10 | AD23078 | ND |
| 2016-02-10 | AD23074 | ND |
| 2016-05-26 | AD38557 | ND |
| 2016-05-26 | AD38559 | ND |
| 2016-05-26 | AD38561 | ND |
| 2016-09-13 | AD49218 | ND |
| 2017-02-13 | AD70404 | ND |
| 2017-02-13 | AD70400 | ND |
| 2017-02-13 | AD70408 | ND |
| 2017-02-13 | AD70398 | ND |
| 2017-05-01 | AD81846 | ND |
| 2018-02-08 | AE13063 | ND |
| 2018-02-08 | AE13065 | ND |
| 2018-02-08 | AE13053 | ND |
| 2018-02-08 | AE13045 | ND |
| 2018-02-08 | AE13049 | ND |
| 2019-03-14 | AE58445 | ND |
| 2019-03-14 | AE58453 | ND |
| 2019-03-14 | AE58459 | ND |
| 2019-03-14 | AE58447 | ND |
| 2019-03-14 | AE58463 | ND |