1,2,4-Trichlorobenzene
City of Westminster
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 9 | 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 |
---|---|---|
2014-07-14 | 0060015_02_00146 | ND |
2014-07-14 | 0060015_03_00146 | ND |
2014-07-14 | 0060015_04_00146 | ND |
2014-12-10 | 0060015_01_98172 | ND |
2015-08-26 | E16000789004 | ND |
2015-08-26 | E16000789006 | ND |
2015-11-18 | E16002173010 | ND |
2015-12-15 | 104745 | ND |
2016-09-08 | E17001059012 | ND |
2016-09-08 | E17001059001 | ND |
2016-09-08 | E17001059008 | ND |
2016-09-08 | E17001059006 | ND |
2016-09-08 | E17001059004 | ND |
2016-12-20 | 112032 | ND |
2017-01-31 | E17002937001 | ND |
2017-12-18 | 118938 | ND |
2018-02-27 | 0060015-10022718 | ND |
2018-05-14 | E18004108001 | ND |
2018-09-11 | E19000886001 | ND |
2018-12-04 | 127042 | ND |
2019-06-13 | E19004289008 | ND |
2019-06-13 | E19004289010 | ND |
2019-07-31 | E20000430010 | ND |
2019-07-31 | E20000430012 | ND |
2019-07-31 | E20000430001 | ND |
2019-07-31 | E20000430006 | ND |
2019-07-31 | E20000430008 | ND |
2019-11-07 | E20001794001 | ND |
2019-12-12 | 134618 | ND |