1,2,4-Trichlorobenzene
Golden Water Supply Corporation
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 7 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2015-01-20 | Q1501677007 | ND |
| 2015-01-20 | Q1501677005 | ND |
| 2015-01-20 | Q1501677003 | ND |
| 2015-01-20 | Q1501677014 | ND |
| 2015-01-20 | Q1501677001 | ND |
| 2015-06-12 | Q1522013001 | ND |
| 2015-08-14 | Q1532345004 | ND |
| 2016-05-19 | Q1619901011 | ND |
| 2016-05-19 | Q1619901003 | ND |
| 2016-05-19 | Q1619901005 | ND |
| 2016-05-19 | Q1619901008 | ND |
| 2016-05-19 | Q1619901010 | ND |
| 2016-05-19 | Q1619901021 | ND |
| 2016-09-15 | Q1638066001 | ND |
| 2016-11-10 | Q1649186001 | ND |
| 2017-01-12 | Q1701777008 | ND |
| 2017-03-08 | Q1709807007 | ND |
| 2017-03-08 | Q1709807009 | ND |
| 2017-03-08 | Q1709807006 | ND |
| 2017-03-08 | Q1709807003 | ND |
| 2017-03-08 | Q1709807001 | ND |
| 2017-09-06 | Q1741266001 | ND |
| 2018-03-12 | Q1809884015 | ND |
| 2018-03-12 | Q1809884010 | ND |
| 2018-03-12 | Q1809884012 | ND |
| 2018-03-12 | Q1809884017 | ND |
| 2018-03-12 | Q1809884001 | ND |
| 2018-03-12 | Q1809884019 | ND |
| 2018-09-17 | Q1836805002 | ND |
| 2019-06-11 | Q1934245002 | ND |
| 2019-06-11 | Q1934245014 | ND |
| 2019-06-11 | Q1934245012 | ND |
| 2019-06-11 | Q1934245010 | ND |
| 2019-06-11 | Q1934245008 | ND |
| 2019-06-11 | Q1934245006 | ND |
| 2019-06-11 | Q1934245004 | ND |