1,2,4-Trichlorobenzene
Sardis Lone Elm WSC
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 | 2 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-04-28 | Q1413518013 | ND |
| 2014-04-28 | Q1413518010 | ND |
| 2015-04-20 | Q1514635021 | ND |
| 2015-04-20 | Q1514635020 | ND |
| 2015-04-20 | Q1514635017 | ND |
| 2015-04-20 | Q1514635016 | ND |
| 2015-04-20 | Q1514635014 | ND |
| 2015-07-22 | Q1528430001 | ND |
| 2015-09-10 | Q1535233002 | ND |
| 2015-11-19 | Q1546073006 | ND |
| 2016-01-25 | Q1603127004 | ND |
| 2016-01-25 | Q1603127001 | ND |
| 2016-01-25 | Q1603127008 | ND |
| 2016-10-27 | Q1645955004 | ND |
| 2016-10-27 | Q1645955001 | ND |
| 2017-04-06 | Q1714243035 | ND |
| 2017-04-06 | Q1714243028 | ND |
| 2017-04-06 | Q1714243033 | ND |
| 2017-04-06 | Q1714243026 | ND |
| 2017-04-06 | Q1714243032 | ND |
| 2017-10-16 | Q1753055001 | ND |
| 2018-01-11 | Q1801694020 | ND |
| 2018-01-11 | Q1801694018 | ND |
| 2018-01-11 | Q1801694017 | ND |
| 2018-01-11 | Q1801694015 | ND |
| 2018-01-11 | Q1801694012 | ND |
| 2018-08-27 | Q1834176002 | ND |
| 2019-04-18 | Q1915875003 | ND |
| 2019-04-18 | Q1915875008 | ND |
| 2019-04-18 | Q1915875020 | ND |
| 2019-04-18 | Q1915875005 | ND |
| 2019-04-18 | Q1915875017 | ND |