1,2,4-Trichlorobenzene
Northstone Gardens
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-04-29 | E404O46-2VOC | ND |
2015-11-16 | E511F85-2VOC | ND |
2016-03-21 | E603I93-1VOC | ND |
2016-04-13 | E604D77-1VOC | ND |
2016-08-08 | E608970-1VOC | ND |
2016-10-24 | E610O78-1VOC | ND |
2017-02-23 | BX74934VOC1 | ND |
2017-02-23 | BX74935VOC1 | ND |
2017-04-19 | BY07097VOC1 | ND |
2017-04-27 | D7D2025-01VOC | ND |
2017-09-19 | BZ04731VOC1 | ND |
2017-12-20 | BZ64273VOC1 | ND |
2018-02-15 | BZ90097VOC1 | ND |
2018-03-29 | CA11239VOC1 | ND |
2018-04-24 | CA35451VOC1 | ND |
2018-07-24 | CA97525 | ND |
2018-09-17 | CB32866 | ND |
2019-06-26 | CD45967 | ND |