1,2,4-Trichlorobenzene
Del City
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 | 5 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 9 | 0 | ND |
| 2019 | ND | 15 | 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 |
|---|---|---|
| 2014-01-14 | 038684.001 | ND |
| 2014-02-24 | 039956.001 | ND |
| 2014-04-23 | 042179.002 | ND |
| 2014-07-08 | 045087.001 | ND |
| 2014-09-29 | 049090.001 | ND |
| 2015-01-06 | 052208.001 | ND |
| 2015-05-21 | 054855.001 | ND |
| 2015-07-16 | 059187.001 | ND |
| 2015-10-07 | 063861.001 | ND |
| 2015-10-22 | 064470.001 | ND |
| 2016-08-04 | SDWA-1059003-00 | ND |
| 2016-08-04 | SDWA-1059002-00 | ND |
| 2016-11-10 | SDWA-1098505-00 | ND |
| 2017-02-08 | SDWA-1123949-00 | ND |
| 2017-04-12 | SDWA-1143844-00 | ND |
| 2017-08-24 | SDWA-1183733-00 | ND |
| 2017-08-24 | SDWA-1183728-00 | ND |
| 2017-11-30 | SDWA-1214283-00 | ND |
| 2018-01-18 | SDWA-1227912-00 | ND |
| 2018-04-11 | SDWA-1251654-00 | ND |
| 2018-04-12 | SDWA-1251659-00 | ND |
| 2018-07-11 | SDWA-1280161-00 | ND |
| 2018-07-17 | SDWA-1280166-00 | ND |
| 2018-08-30 | SDWA-1303404-00 | ND |
| 2018-08-30 | SDWA-1303399-00 | ND |
| 2018-11-08 | SDWA-1313550-00 | ND |
| 2018-11-08 | SDWA-1313545-00 | ND |
| 2019-03-07 | SDWA-1338784-00 | ND |
| 2019-03-07 | SDWA-1338763-00 | ND |
| 2019-05-01 | SDWA-1361857-00 | ND |
| 2019-05-01 | SDWA-1361829-00 | ND |
| 2019-05-01 | SDWA-1361831-00 | ND |
| 2019-05-01 | SDWA-1361833-00 | ND |
| 2019-05-01 | SDWA-1361835-00 | ND |
| 2019-05-01 | SDWA-1361837-00 | ND |
| 2019-05-01 | SDWA-1361839-00 | ND |
| 2019-05-01 | SDWA-1361841-00 | ND |
| 2019-05-01 | SDWA-1361858-00 | ND |
| 2019-08-15 | SDWA-1392146-00 | ND |
| 2019-08-15 | SDWA-1392141-00 | ND |
| 2019-12-19 | SDWA-1441461-00 | ND |
| 2019-12-19 | SDWA-1441462-00 | ND |