1,2,4-Trichlorobenzene
Philadelphia Water Department
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 | 15 | 0 | ND |
| 2015 | ND | 12 | 0 | ND |
| 2016 | ND | 12 | 0 | ND |
| 2017 | ND | 15 | 0 | ND |
| 2018 | ND | 15 | 0 | ND |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2014-02-12 | DW140212-000 | ND |
| 2014-02-12 | DW140212-001 | ND |
| 2014-02-12 | DW140212-003 | ND |
| 2014-05-14 | 7463348 | ND |
| 2014-05-14 | 7468948 | ND |
| 2014-05-14 | 7463350 | ND |
| 2014-05-14 | 7468950 | ND |
| 2014-05-14 | 7468949 | ND |
| 2014-05-14 | 7463349 | ND |
| 2014-08-13 | 7570046 | ND |
| 2014-08-13 | 7570047 | ND |
| 2014-08-13 | 7570048 | ND |
| 2014-11-19 | DW141119-002 | ND |
| 2014-11-19 | DW141119-038 | ND |
| 2014-11-19 | DW141119-019 | ND |
| 2015-02-11 | 12406528 | ND |
| 2015-02-11 | 12406488 | ND |
| 2015-02-11 | 12406508 | ND |
| 2015-05-13 | 12754280 | ND |
| 2015-05-13 | 12754300 | ND |
| 2015-05-13 | 12754260 | ND |
| 2015-08-12 | 13140287 | ND |
| 2015-08-12 | 13140307 | ND |
| 2015-08-12 | 13140267 | ND |
| 2015-11-18 | 13518608 | ND |
| 2015-11-18 | 13518628 | ND |
| 2015-11-18 | 13518588 | ND |
| 2016-02-10 | 13874722 | ND |
| 2016-02-10 | 13874702 | ND |
| 2016-02-10 | 13874682 | ND |
| 2016-05-11 | 14257183 | ND |
| 2016-05-11 | 14257223 | ND |
| 2016-05-11 | 14257203 | ND |
| 2016-08-10 | 14741964 | ND |
| 2016-08-10 | 14742004 | ND |
| 2016-08-10 | 14741984 | ND |
| 2016-11-09 | 15231740 | ND |
| 2016-11-09 | 15231700 | ND |
| 2016-11-09 | 15231720 | ND |
| 2017-02-08 | 15662017 | ND |
| 2017-02-08 | 15661997 | ND |
| 2017-02-08 | 15661977 | ND |
| 2017-05-10 | 16101780 | ND |
| 2017-05-10 | 16101800 | ND |
| 2017-05-10 | 16100840 | ND |
| 2017-05-10 | 16100800 | ND |
| 2017-05-10 | 16101760 | ND |
| 2017-05-10 | 16100820 | ND |
| 2017-08-09 | 16572493 | ND |
| 2017-08-09 | 16572513 | ND |
| 2017-08-09 | 16572473 | ND |
| 2017-11-08 | 17029187 | ND |
| 2017-11-08 | 17029207 | ND |
| 2017-11-08 | 17029167 | ND |
| 2018-02-07 | DW180207-019 | ND |
| 2018-02-07 | DW180207-037 | ND |
| 2018-02-07 | DW180207-002 | ND |
| 2018-05-09 | DW180509-019 | ND |
| 2018-05-09 | DW180509-002 | ND |
| 2018-05-09 | DW180509-035 | ND |
| 2018-08-08 | DW180808-002 | ND |
| 2018-08-08 | 8083919-01 | ND |
| 2018-08-08 | 8083919-02 | ND |
| 2018-08-08 | DW180808-019 | ND |
| 2018-08-08 | 8083919-03 | ND |
| 2018-08-08 | DW180808-035 | ND |
| 2018-11-07 | DW181107-002 | ND |
| 2018-11-07 | DW181107-018 | ND |
| 2018-11-08 | DW181108-038 | ND |
| 2019-02-13 | DW190213-034 | ND |
| 2019-02-13 | DW190213-018 | ND |
| 2019-02-13 | DW190213-002 | ND |
| 2019-05-15 | DW190515-035 | ND |
| 2019-05-15 | DW190515-019 | ND |
| 2019-05-15 | DW190515-002 | ND |
| 2019-08-14 | 9084421-06 | ND |
| 2019-08-14 | 9084421-07 | ND |
| 2019-08-14 | 9084421-08 | ND |
| 2019-11-13 | DW191113-019 | ND |
| 2019-11-13 | DW191113-035 | ND |
| 2019-11-13 | DW191113-002 | ND |