1,2,4-Trichlorobenzene
Stratford Harbour
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 | 13 | 0 | ND |
| 2015 | ND | 12 | 0 | ND |
| 2016 | ND | 12 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2014-01-14 | 24444101 | ND |
| 2014-01-14 | 24444301 | ND |
| 2014-01-14 | 24443901 | ND |
| 2014-04-21 | 25150301 | ND |
| 2014-04-21 | 25150101 | ND |
| 2014-04-21 | 25150201 | ND |
| 2014-07-21 | 26415201 | ND |
| 2014-07-21 | 26415501 | ND |
| 2014-07-21 | 26415301 | ND |
| 2014-07-21 | 201407310219-VOC | ND |
| 2014-10-14 | 27194101 | ND |
| 2014-10-14 | 27193901 | ND |
| 2014-10-14 | 27194001 | ND |
| 2015-01-29 | 00001_EXP-AMERIC | ND |
| 2015-01-29 | 00001_EXP-AMERIC | ND |
| 2015-01-29 | 00001_EXP-AMERIC | ND |
| 2015-04-28 | 00001_EXP-AMERIC | ND |
| 2015-04-28 | 00001_EXP-AMERIC | ND |
| 2015-04-28 | 00001_EXP-AMERIC | ND |
| 2015-07-13 | 460274-AMERICAN | ND |
| 2015-07-13 | 460274-AMERICAN | ND |
| 2015-07-13 | 460274-AMERICAN | ND |
| 2015-10-14 | 460274-AMERICAN | ND |
| 2015-10-14 | 460274-AMERICAN | ND |
| 2015-10-14 | 460274-AMERICAN | ND |
| 2016-01-28 | 31010401 | ND |
| 2016-01-28 | 31010601 | ND |
| 2016-01-28 | 31010801 | ND |
| 2016-04-19 | 31607101 | ND |
| 2016-04-19 | 31607201 | ND |
| 2016-06-29 | 31607301 | ND |
| 2016-07-19 | 32660801 | ND |
| 2016-07-19 | 32660701 | ND |
| 2016-07-19 | 32661001 | ND |
| 2016-10-24 | 33420101 | ND |
| 2016-10-24 | 33420001 | ND |
| 2016-10-24 | 33419901 | ND |
| 2017-01-30 | 34239801 | ND |
| 2017-01-30 | 34239601 | ND |
| 2017-01-30 | 34239401 | ND |
| 2018-01-16 | 38195401 | ND |
| 2018-01-16 | 38195501 | ND |
| 2018-01-16 | 38195701 | ND |
| 2019-01-28 | 42534701-VOC | ND |
| 2019-01-28 | 42534801-VOC | ND |