1,2,4-Trichlorobenzene
Stetsonville Waterworks
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 | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2014-02-17 | 770769 | ND |
2014-04-29 | 782833 | ND |
2014-08-04 | 807834 | ND |
2014-10-15 | 825536 | ND |
2015-02-16 | 843801 | ND |
2015-04-21 | 855119 | ND |
2015-07-15 | 871238 | ND |
2015-10-26 | 890676 | ND |
2016-01-18 | 901621 | ND |
2016-05-03 | 919159 | ND |
2016-08-03 | 937060 | ND |
2016-11-02 | 956761 | ND |
2017-03-09 | 976843 | ND |
2017-05-18 | 991057 | ND |
2017-07-24 | 1006015 | ND |
2017-11-29 | 1031117 | ND |
2018-03-08 | 1044130 | ND |
2018-04-26 | 1052084 | ND |
2018-08-21 | 1075087 | ND |
2018-11-14 | 1092856 | ND |
2019-08-13 | 1140463 | ND |