1,2,4-Trichlorobenzene
Aqua Pa Superior Main System
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 | 5 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 8 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 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 |
|---|---|---|
| 2014-10-02 | 2032470002 | ND |
| 2014-10-02 | 2032470001 | ND |
| 2014-10-02 | 2032470004 | ND |
| 2014-10-02 | 2032470005 | ND |
| 2014-10-02 | 2032470003 | ND |
| 2016-09-06 | 14913018 | ND |
| 2016-09-08 | 14912898 | ND |
| 2016-09-08 | 14912919 | ND |
| 2016-09-08 | 14912940 | ND |
| 2016-09-08 | 14912961 | ND |
| 2016-09-08 | 14912982 | ND |
| 2016-11-03 | 15230797 | ND |
| 2017-02-22 | 15660465 | ND |
| 2017-04-26 | 15942787 | ND |
| 2017-04-26 | 15942808 | ND |
| 2017-04-26 | 15942766 | ND |
| 2017-04-26 | 15942745 | ND |
| 2017-04-26 | 15942724 | ND |
| 2017-04-26 | 15942703 | ND |
| 2017-08-10 | 16571405 | ND |
| 2018-03-14 | AF78842 | ND |
| 2018-05-29 | AF85267 | ND |
| 2018-07-31 | AF91266 | ND |
| 2018-08-09 | AF92390 | ND |
| 2019-08-08 | AG27413 | ND |
| 2019-08-08 | AG27411 | ND |