1,2,4-Trichlorobenzene
City of Lawrence
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 | ND | 6 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2014-02-12 | FEB2014-VOC | ND |
| 2014-02-12 | FEB-14-VOC | ND |
| 2014-05-21 | MAY2014-VOC | ND |
| 2014-05-21 | MAY-14-VOC | ND |
| 2014-08-13 | AUG2014-VOC | ND |
| 2014-08-13 | AUG-14-VOC | ND |
| 2015-05-06 | MAY2015-VOC | ND |
| 2015-05-06 | MAY-15-VOC | ND |
| 2017-05-30 | 2017-05-30-TP002 | ND |
| 2017-05-30 | 2017-05-30-TP001 | ND |
| 2018-02-14 | 2018-02-14-TP001 | ND |
| 2018-02-14 | 201-02-14-TP002T | ND |
| 2018-05-10 | 2018-05-10-TP002 | ND |
| 2018-05-10 | 2018-05-10-TP001 | ND |
| 2018-08-15 | 2018-11-01-TP002 | ND |
| 2018-08-15 | 2018-11-01-TP001 | ND |
| 2018-08-15 | 2018-08-15-TP002 | ND |
| 2018-08-15 | 2018-08-15-TP001 | ND |
| 2019-02-14 | 2019-02-14 VOC T | ND |
| 2019-02-14 | 2019-02-14 VOC T | ND |
| 2019-05-14 | 2019-05-14-VOC-T | ND |
| 2019-05-14 | 2019-05-14-VOC T | ND |
| 2019-08-07 | 2019-08-07-VOC T | ND |
| 2019-08-08 | 2019-08-07-VOC-T | ND |
| 2019-11-18 | 2019-11-18-VOC-T | ND |