1,2,4-Trichlorobenzene
Sw Boone County Water Association
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 | 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 | 3 | 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 |
|---|---|---|
| 2014-01-21 | 14023003601 | ND |
| 2014-04-29 | 14121003109 | ND |
| 2014-08-19 | 14233003809 | ND |
| 2014-10-28 | 14303006502 | ND |
| 2015-01-27 | 15029009302 | ND |
| 2015-04-28 | 15120005602 | ND |
| 2015-07-28 | 15210001001 | ND |
| 2015-10-28 | 15302004401 | ND |
| 2016-01-21 | 16025006901 | ND |
| 2016-05-17 | 16140011102 | ND |
| 2016-07-18 | 16203007401 | ND |
| 2016-11-15 | 16321009801 | ND |
| 2017-02-06 | 17040000701 | ND |
| 2017-04-25 | 17117003409 | ND |
| 2017-07-25 | 17207001908 | ND |
| 2017-10-25 | 17299005901 | ND |
| 2018-01-24 | 18025010402 | ND |
| 2018-05-08 | 18129001702 | ND |
| 2018-07-31 | 18213007301 | ND |
| 2018-10-30 | 18304001501 | ND |
| 2019-01-29 | 19031007301 | ND |
| 2019-04-30 | 19122005502 | ND |
| 2019-07-23 | 19205003401 | ND |