1,2,4-Trichlorobenzene
California American Water Company - Antelope
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 | 17 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 17 | 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 |
|---|---|---|
| 2014-08-12 | 1225-006-1230 | ND |
| 2015-08-05 | 1225-003-1110 | ND |
| 2015-08-05 | 1225-005-1222 | ND |
| 2015-08-05 | 1225-006-0945 | ND |
| 2015-08-10 | 1225-011-0855 | ND |
| 2015-08-10 | 1225-014-1125 | ND |
| 2015-08-10 | 1225-013-1021 | ND |
| 2015-08-11 | 1225-002-1236 | ND |
| 2015-08-11 | 1225-018-1145 | ND |
| 2015-08-11 | 1225-004-1255 | ND |
| 2015-08-11 | 1225-001-0915 | ND |
| 2015-08-11 | 1225-007-0907 | ND |
| 2015-08-11 | 1225-008-1014 | ND |
| 2015-08-11 | 1225-009-1020 | ND |
| 2015-08-12 | 1225-016-1050 | ND |
| 2015-08-12 | 1225-010-0859 | ND |
| 2015-08-13 | 1225-017-0909 | ND |
| 2015-08-13 | 1225-012-1100 | ND |
| 2018-08-07 | 1225-012-1030 | ND |
| 2018-08-07 | 1225-010-1310 | ND |
| 2018-08-07 | 1225-018-1210 | ND |
| 2018-08-07 | 1225-011-1120 | ND |
| 2018-08-07 | 1225-009-0900 | ND |
| 2018-08-08 | 1225-016-1340 | ND |
| 2018-08-08 | 1225-017-1010 | ND |
| 2018-08-08 | 1225-002-0920 | ND |
| 2018-08-09 | 1225-008-1020 | ND |
| 2018-08-09 | 1225-007-1130 | ND |
| 2018-08-14 | 1225-013-1220 | ND |
| 2018-08-14 | 1225-014-1045 | ND |
| 2018-08-14 | 1225-006-1000 | ND |
| 2018-08-14 | 1225-004-0830 | ND |
| 2018-08-14 | 1225-003-1130 | ND |
| 2018-08-14 | 1225-040-1040 | ND |
| 2018-09-13 | 1233-040-0845 | ND |
| 2019-05-16 | 1225-001-1320 | ND |