1,2,4-Trichlorobenzene
City of Kerrville
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 12 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2014-07-16 | AC59841 | ND |
| 2015-04-15 | AC88380 | ND |
| 2015-07-20 | AD00201 | ND |
| 2015-07-20 | AD00203 | ND |
| 2015-08-14 | AD04432 | ND |
| 2015-08-14 | AD04428 | ND |
| 2015-08-14 | AD04430 | ND |
| 2016-02-01 | AD21129 | ND |
| 2016-04-18 | AD33348 | ND |
| 2016-07-05 | AD42974 | ND |
| 2016-07-05 | AD42962 | ND |
| 2016-10-24 | AD54358 | ND |
| 2017-04-06 | AD78768 | ND |
| 2017-05-08 | AD83088 | ND |
| 2017-05-08 | AD83086 | ND |
| 2017-05-09 | AD83357 | ND |
| 2017-05-09 | AD83359 | ND |
| 2017-05-09 | AD83355 | ND |
| 2017-07-05 | AD88335 | ND |
| 2017-07-05 | AD88337 | ND |
| 2017-07-05 | AD88333 | ND |
| 2017-07-05 | AD88339 | ND |
| 2017-10-09 | AD99820 | ND |
| 2017-10-09 | AD99818 | ND |
| 2018-01-08 | AE08106 | ND |
| 2018-01-08 | AE08108 | ND |
| 2018-03-22 | AE19623 | ND |
| 2018-07-16 | AE33381 | ND |
| 2018-10-01 | AE42259 | ND |
| 2018-10-01 | AE42261 | ND |
| 2018-10-01 | AE42265 | ND |
| 2018-10-01 | AE42263 | ND |
| 2019-01-14 | AE49587 | ND |
| 2019-01-14 | AE49579 | ND |
| 2019-04-08 | AE61438 | ND |
| 2019-04-08 | AE61434 | ND |
| 2019-07-15 | AE74443 | ND |
| 2019-07-15 | AE74449 | ND |
| 2019-10-03 | AE85692 | ND |