1,2,4-Trichlorobenzene
City of Rosenberg
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 | 1 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 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 | AC39520 | ND |
| 2015-03-25 | AC86068 | ND |
| 2015-03-25 | AC86064 | ND |
| 2015-03-25 | AC86066 | ND |
| 2015-03-25 | AC86058 | ND |
| 2015-05-05 | AC90568 | ND |
| 2016-01-26 | AD20142 | ND |
| 2016-01-26 | AD20114 | ND |
| 2016-01-26 | AD20110 | ND |
| 2016-01-26 | AD20136 | ND |
| 2017-03-14 | AD74917 | ND |
| 2017-03-14 | AD74885 | ND |
| 2017-03-14 | AD74943 | ND |
| 2017-05-31 | AD86151 | ND |
| 2017-05-31 | AD86153 | ND |
| 2018-03-05 | AE16646 | ND |
| 2018-03-05 | AE16648 | ND |
| 2018-03-05 | AE16654 | ND |
| 2018-03-05 | AE16660 | ND |
| 2018-05-21 | AE27018 | ND |
| 2019-04-02 | AE60873 | ND |
| 2019-04-02 | AE60883 | ND |
| 2019-04-02 | AE60877 | ND |