1,2,4-Trichlorobenzene
Exeter Water Department
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 | 2 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-07-09 | 133509.01 | ND |
2014-10-09 | 136708.02 | ND |
2015-07-16 | 145750.01 | ND |
2015-09-09 | 147823.01 | ND |
2015-11-18 | 150486.01 | ND |
2016-01-13 | 152193.01 | ND |
2016-04-07 | 154592.01 | ND |
2016-07-13 | 158246.01 | ND |
2016-07-21 | 158588.01 | ND |
2016-10-04 | 161298.01 | ND |
2017-07-11 | 170940.01 | ND |
2017-10-03 | 174234.01 | ND |
2018-07-11 | 184059.01 | ND |
2018-07-31 | 184895.01 | ND |
2018-10-03 | 187376.01 | ND |
2019-07-10 | 197719.01 | ND |
2019-10-08 | 201538.01 | ND |