1,2,4-Trichlorobenzene
Seminole County Northwest
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 | 14 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 11 | 0 | ND |
| 2017 | ND | 13 | 0 | ND |
| 2018 | ND | 25 | 0 | ND |
| 2019 | ND | 20 | 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 | Result |
|---|---|
| 2014-01-07 | ND |
| 2014-02-04 | ND |
| 2014-02-04 | ND |
| 2014-02-05 | ND |
| 2014-03-03 | ND |
| 2014-04-01 | ND |
| 2014-05-05 | ND |
| 2014-06-03 | ND |
| 2014-07-10 | ND |
| 2014-08-07 | ND |
| 2014-09-10 | ND |
| 2014-10-15 | ND |
| 2014-11-04 | ND |
| 2014-12-09 | ND |
| 2015-01-08 | ND |
| 2015-02-12 | ND |
| 2015-11-17 | ND |
| 2015-12-09 | ND |
| 2016-01-12 | ND |
| 2016-02-10 | ND |
| 2016-03-09 | ND |
| 2016-04-04 | ND |
| 2016-05-09 | ND |
| 2016-06-13 | ND |
| 2016-07-11 | ND |
| 2016-08-11 | ND |
| 2016-10-18 | ND |
| 2016-11-10 | ND |
| 2016-12-13 | ND |
| 2017-01-12 | ND |
| 2017-02-06 | ND |
| 2017-02-16 | ND |
| 2017-03-09 | ND |
| 2017-04-13 | ND |
| 2017-05-04 | ND |
| 2017-06-05 | ND |
| 2017-07-17 | ND |
| 2017-08-08 | ND |
| 2017-09-18 | ND |
| 2017-10-18 | ND |
| 2017-11-06 | ND |
| 2017-12-07 | ND |
| 2018-01-10 | ND |
| 2018-02-08 | ND |
| 2018-03-08 | ND |
| 2018-04-09 | ND |
| 2018-05-08 | ND |
| 2018-06-06 | ND |
| 2018-07-11 | ND |
| 2018-08-07 | ND |
| 2018-08-07 | ND |
| 2018-08-07 | ND |
| 2018-09-13 | ND |
| 2018-09-13 | ND |
| 2018-09-13 | ND |
| 2018-09-13 | ND |
| 2018-10-08 | ND |
| 2018-10-08 | ND |
| 2018-10-08 | ND |
| 2018-10-08 | ND |
| 2018-11-06 | ND |
| 2018-11-06 | ND |
| 2018-11-06 | ND |
| 2018-11-06 | ND |
| 2018-11-06 | ND |
| 2018-12-04 | ND |
| 2018-12-04 | ND |
| 2019-01-09 | ND |
| 2019-02-07 | ND |
| 2019-03-14 | ND |
| 2019-03-14 | ND |
| 2019-04-04 | ND |
| 2019-04-04 | ND |
| 2019-04-04 | ND |
| 2019-04-04 | ND |
| 2019-05-08 | ND |
| 2019-06-12 | ND |
| 2019-06-12 | ND |
| 2019-06-12 | ND |
| 2019-07-02 | ND |
| 2019-08-08 | ND |
| 2019-08-08 | ND |
| 2019-09-11 | ND |
| 2019-10-16 | ND |
| 2019-11-07 | ND |
| 2019-12-12 | ND |
| 2019-12-12 | ND |