1,2,4-Trichlorobenzene
Abbotsford Waterworks
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 | 4 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-02-25 | 771878 | ND |
| 2014-04-22 | 781762 | ND |
| 2014-09-29 | 822025 | ND |
| 2014-12-02 | 833644 | ND |
| 2015-02-03 | 841634 | ND |
| 2015-02-03 | 841637 | ND |
| 2015-02-03 | 841639 | ND |
| 2015-04-07 | 852238 | ND |
| 2015-07-21 | 872137 | ND |
| 2015-10-13 | 888558 | ND |
| 2016-01-19 | 901894 | ND |
| 2016-01-19 | 901892 | ND |
| 2016-01-19 | 901889 | ND |
| 2016-04-18 | 915976 | ND |
| 2016-07-26 | 935477 | ND |
| 2016-10-18 | 954163 | ND |
| 2017-01-30 | 971521 | ND |
| 2017-02-21 | 974580 | ND |
| 2017-03-21 | 978780 | ND |
| 2017-04-11 | 982447 | ND |
| 2017-07-25 | 1006644 | ND |
| 2017-10-10 | 1023405 | ND |
| 2018-01-09 | 1036349 | ND |
| 2018-01-09 | 1036352 | ND |
| 2019-01-15 | 1101346 | ND |
| 2019-01-15 | 1101343 | ND |