1,2,4-Trichlorobenzene
City of Santa Fe Water System
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 | 6 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-04-10 | 2014011932 | ND |
| 2014-07-01 | 2014021163 | ND |
| 2014-07-01 | 2014021164 | ND |
| 2014-08-26 | 2014027727 | ND |
| 2014-09-30 | 2014031199 | ND |
| 2014-09-30 | 2014031198 | ND |
| 2015-02-25 | 2015006660 | ND |
| 2016-05-05 | 2016013213 | ND |
| 2016-09-28 | 2016028729 | ND |
| 2017-02-09 | 1702573-001 | ND |
| 2017-02-13 | 1702761-001 | ND |
| 2017-02-13 | 1702764-001 | ND |
| 2017-11-08 | 1711574-001 | ND |
| 2017-11-08 | 1711572-001 | ND |
| 2017-11-15 | 1711978-003 | ND |
| 2017-11-15 | 1711981-001 | ND |
| 2018-11-27 | 1811D79-001 | ND |
| 2019-10-08 | 1910693-001 | ND |