1,2,4-Trichlorobenzene
East Jefferson Waterworks District 1
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 | 12 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2014-01-06 | AD88200 | ND |
| 2014-01-06 | AD88198 | ND |
| 2014-01-06 | AD88200 | ND |
| 2014-01-06 | AD88199 | ND |
| 2014-01-06 | AD88198 | ND |
| 2014-01-06 | AD88199 | ND |
| 2014-03-13 | AD89684 | ND |
| 2014-03-13 | AD89685 | ND |
| 2014-03-13 | AD89686 | ND |
| 2014-03-13 | AD89686 | ND |
| 2014-03-13 | AD89685 | ND |
| 2014-03-13 | AD89684 | ND |
| 2015-02-23 | 35177313005 | ND |
| 2015-02-23 | 35177313003 | ND |
| 2015-02-23 | 35177313004 | ND |
| 2015-02-23 | 35177313005 | ND |
| 2015-02-23 | 35177313004 | ND |
| 2015-02-23 | 35177313003 | ND |
| 2016-01-20 | 35226299004 | ND |
| 2016-01-20 | 35226299003 | ND |
| 2016-01-20 | 35226299004 | ND |
| 2016-01-20 | 35226299005 | ND |
| 2016-01-20 | 35226299005 | ND |
| 2016-01-20 | 35226299003 | ND |
| 2017-02-09 | 35294515003 | ND |
| 2017-02-09 | 35294515004 | ND |
| 2017-02-09 | 35294515005 | ND |
| 2017-02-09 | 35294515005 | ND |
| 2017-02-09 | 35294515004 | ND |
| 2017-02-09 | 35294515003 | ND |
| 2018-03-15 | 35380393001 | ND |
| 2018-03-15 | 35380393003 | ND |
| 2018-03-15 | 35380393002 | ND |
| 2018-03-15 | 35380393001 | ND |
| 2018-03-15 | 35380393003 | ND |
| 2018-03-15 | 35380393002 | ND |
| 2019-02-27 | 35451094001 | ND |
| 2019-02-27 | 35451093001 | ND |
| 2019-02-27 | 35451088001 | ND |
| 2019-02-27 | 35451088001 | ND |
| 2019-02-27 | 35451093001 | ND |
| 2019-02-27 | 35451094001 | ND |
| 2019-09-05 | 35495383001 | ND |
| 2019-09-05 | 35495383003 | ND |
| 2019-09-05 | 35495383002 | ND |
| 2019-09-05 | 35495383001 | ND |
| 2019-09-05 | 35495383003 | ND |
| 2019-09-05 | 35495383002 | ND |