1,2,4-Trichlorobenzene
Sanford Water District
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 | 19 | 0 | ND |
| 2015 | ND | 18 | 0 | ND |
| 2016 | ND | 22 | 0 | ND |
| 2017 | ND | 24 | 0 | ND |
| 2018 | ND | 14 | 0 | ND |
| 2019 | ND | 17 | 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 |
|---|---|---|
| 2014-03-12 | ND | |
| 2014-03-12 | ND | |
| 2014-03-12 | ND | |
| 2014-06-02 | ND | |
| 2014-06-02 | ND | |
| 2014-06-03 | ND | |
| 2014-06-03 | ND | |
| 2014-06-04 | ND | |
| 2014-06-05 | ND | |
| 2014-06-05 | ND | |
| 2014-08-11 | ND | |
| 2014-08-12 | ND | |
| 2014-10-30 | ND | |
| 2014-11-17 | ND | |
| 2014-11-17 | ND | |
| 2014-11-17 | ND | |
| 2014-11-17 | ND | |
| 2014-11-17 | ND | |
| 2014-11-17 | ND | |
| 2015-03-11 | 215030269 | ND |
| 2015-03-11 | 215030266 | ND |
| 2015-03-11 | 215030264 | ND |
| 2015-04-29 | 215040774.03 | ND |
| 2015-04-29 | 215040774.02 | ND |
| 2015-04-29 | 215040774.01 | ND |
| 2015-05-27 | 215050784 | ND |
| 2015-07-15 | 215070452.01 | ND |
| 2015-07-15 | 215070450 | ND |
| 2015-08-24 | 215080762 | ND |
| 2015-08-24 | 215080759 | ND |
| 2015-08-26 | 215080854.03 | ND |
| 2015-08-26 | 215080854.02 | ND |
| 2015-08-26 | 215080854.01 | ND |
| 2015-11-18 | 215110432 | ND |
| 2015-11-18 | 215110430 | ND |
| 2015-11-18 | 215110426 | ND |
| 2015-11-24 | 215110428 | ND |
| 2016-03-29 | 216030772 | ND |
| 2016-03-29 | 216030770.01 | ND |
| 2016-03-30 | 216030803 | ND |
| 2016-03-30 | 216030801 | ND |
| 2016-05-25 | 216051007 | ND |
| 2016-06-15 | 216060628 | ND |
| 2016-06-15 | 216060626 | ND |
| 2016-06-15 | 216060624 | ND |
| 2016-06-20 | 216060820 | ND |
| 2016-06-20 | 216060817 | ND |
| 2016-08-24 | 216080963.01 | ND |
| 2016-08-29 | 216081192.02 | ND |
| 2016-08-29 | 216081192.01 | ND |
| 2016-08-30 | 216081239.02 | ND |
| 2016-08-30 | 216081239.01 | ND |
| 2016-11-09 | 216110294 | ND |
| 2016-11-09 | 216110292 | ND |
| 2016-11-16 | 216110518 | ND |
| 2016-11-16 | 216110516 | ND |
| 2016-12-06 | 216120183 | ND |
| 2016-12-06 | 216120180 | ND |
| 2016-12-15 | 216120418 | ND |
| 2017-03-21 | 217030573.01 | ND |
| 2017-03-21 | 217030571.01 | ND |
| 2017-03-22 | 217030622.01 | ND |
| 2017-03-22 | 217030620.01 | ND |
| 2017-03-28 | 217030765.01 | ND |
| 2017-05-30 | 217051146.01 | ND |
| 2017-05-30 | 217051143.01 | ND |
| 2017-05-30 | 217051123.01 | ND |
| 2017-05-30 | 217051120.01 | ND |
| 2017-05-31 | 217051229.01 | ND |
| 2017-05-31 | 217051226.01 | ND |
| 2017-05-31 | 217051223.01 | ND |
| 2017-06-14 | 217060612.01 | ND |
| 2017-06-14 | 217060609.01 | ND |
| 2017-08-23 | 217081090 | ND |
| 2017-08-29 | 217081325 | ND |
| 2017-08-29 | 217081321 | ND |
| 2017-08-29 | 217081317.01 | ND |
| 2017-08-30 | 217081406 | ND |
| 2017-08-30 | 217081402 | ND |
| 2017-08-30 | 217081398 | ND |
| 2017-12-13 | 217120406.03 | ND |
| 2017-12-13 | 217120406.02 | ND |
| 2017-12-13 | 217120406.01 | ND |
| 2018-06-13 | 218060559.01 | ND |
| 2018-06-13 | 218060558.01 | ND |
| 2018-06-20 | 218060839.01 | ND |
| 2018-06-20 | 218060837.01 | ND |
| 2018-06-20 | 218060835.01 | ND |
| 2018-09-18 | 218090600.04 | ND |
| 2018-09-18 | 218090600.03 | ND |
| 2018-09-18 | 218090600.02 | ND |
| 2018-09-18 | 218090600.01 | ND |
| 2018-09-19 | 218090648.03 | ND |
| 2018-09-19 | 218090648.05 | ND |
| 2018-09-19 | 218090648.04 | ND |
| 2018-09-19 | 218090648.02 | ND |
| 2018-09-19 | 218090648.01 | ND |
| 2019-05-22 | 219050982.01 | ND |
| 2019-05-22 | 219050990.01 | ND |
| 2019-05-22 | 219050988.01 | ND |
| 2019-05-22 | 219050984.01 | ND |
| 2019-05-22 | 219050986.01 | ND |
| 2019-08-14 | 219080600.01 | ND |
| 2019-08-14 | 219080602.01 | ND |
| 2019-08-14 | 219080604.01 | ND |
| 2019-08-22 | 219080955.01 | ND |
| 2019-08-26 | 219081046.01 | ND |
| 2019-12-17 | 219120552.01 | ND |
| 2019-12-17 | 219120550.01 | ND |
| 2019-12-17 | 219120557.01 | ND |
| 2019-12-17 | 219120554.01 | ND |
| 2019-12-18 | 219120610.01 | ND |
| 2019-12-18 | 219120614.01 | ND |
| 2019-12-18 | 219120612.01 | ND |